diff --git a/Cargo.lock b/Cargo.lock
index 216a4de6c57..21fc942db9d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -75,12 +75,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "anes"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b46cbb362ab8752921c97e041f5e366ee6297bd428a31275b9fcf1e380f7299"
-
 [[package]]
 name = "ansi-str"
 version = "0.8.0"
@@ -310,12 +304,6 @@ dependencies = [
  "zip",
 ]
 
-[[package]]
-name = "cast"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
-
 [[package]]
 name = "cc"
 version = "1.0.83"
@@ -398,33 +386,6 @@ dependencies = [
  "phf_codegen",
 ]
 
-[[package]]
-name = "ciborium"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0c137568cc60b904a7724001b35ce2630fd00d5d84805fbb608ab89509d788f"
-dependencies = [
- "ciborium-io",
- "ciborium-ll",
- "serde",
-]
-
-[[package]]
-name = "ciborium-io"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "346de753af073cc87b52b2083a506b38ac176a44cfb05497b622e27be899b369"
-
-[[package]]
-name = "ciborium-ll"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "213030a2b5a4e0c0892b6652260cf6ccac84827b83a85a534e178e3906c4cf1b"
-dependencies = [
- "ciborium-io",
- "half",
-]
-
 [[package]]
 name = "clang-sys"
 version = "1.6.1"
@@ -464,7 +425,7 @@ name = "clap_bench"
 version = "0.0.0"
 dependencies = [
  "clap 4.4.18",
- "criterion",
+ "divan",
  "lazy_static",
 ]
 
@@ -633,6 +594,12 @@ dependencies = [
  "vt100",
 ]
 
+[[package]]
+name = "condtype"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf0a07a401f374238ab8e2f11a104d2851bf9ce711ec69804834de8af45c7af"
+
 [[package]]
 name = "console"
 version = "0.15.7"
@@ -709,42 +676,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "criterion"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2b12d017a929603d80db1831cd3a24082f8137ce19c69e6447f54f5fc8d692f"
-dependencies = [
- "anes",
- "cast",
- "ciborium",
- "clap 4.4.17",
- "criterion-plot",
- "is-terminal",
- "itertools 0.10.5",
- "num-traits",
- "once_cell",
- "oorandom",
- "plotters",
- "rayon",
- "regex",
- "serde",
- "serde_derive",
- "serde_json",
- "tinytemplate",
- "walkdir",
-]
-
-[[package]]
-name = "criterion-plot"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b50826342786a51a89e2da3a28f1c32b06e387201bc2d19791f622c673706b1"
-dependencies = [
- "cast",
- "itertools 0.10.5",
-]
-
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.6"
@@ -894,6 +825,31 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "divan"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5398159ee27f2b123d89b856bad61725442f37df5fb98c30cd570c318d594aee"
+dependencies = [
+ "cfg-if",
+ "clap 4.4.17",
+ "condtype",
+ "divan-macros",
+ "libc",
+ "regex-lite",
+]
+
+[[package]]
+name = "divan-macros"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5092f66eb3563a01e85552731ae82c04c934ff4efd7ad1a0deae7b948f4b3ec4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "dtparse"
 version = "2.0.0"
@@ -1147,12 +1103,6 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
 
-[[package]]
-name = "half"
-version = "1.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eabb4a44450da02c90444cf74558da904edde8fb4e9035a9a6a4e15445af0bd7"
-
 [[package]]
 name = "hamcrest2"
 version = "0.3.0"
@@ -2273,12 +2223,6 @@ version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
-[[package]]
-name = "oorandom"
-version = "11.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ab1bc2a289d34bd04a330323ac98a1b4bc82c9d9fcb1e66b63caa84da26b575"
-
 [[package]]
 name = "open"
 version = "5.0.0"
@@ -2517,34 +2461,6 @@ version = "0.3.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
 
-[[package]]
-name = "plotters"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2538b639e642295546c50fcd545198c9d64ee2a38620a628724a3b266d5fbf97"
-dependencies = [
- "num-traits",
- "plotters-backend",
- "plotters-svg",
- "wasm-bindgen",
- "web-sys",
-]
-
-[[package]]
-name = "plotters-backend"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "193228616381fecdc1224c62e96946dfbc73ff4384fba576e052ff8c1bea8142"
-
-[[package]]
-name = "plotters-svg"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9a81d2759aae1dae668f783c308bc5c8ebd191ff4184aaa1b37f65a6ae5a56f"
-dependencies = [
- "plotters-backend",
-]
-
 [[package]]
 name = "pori"
 version = "0.0.0"
@@ -2802,6 +2718,12 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "regex-lite"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30b661b2f27137bdbc16f00eda72866a92bb28af1753ffbd56744fb6e2e9cd8e"
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.2"
@@ -3375,16 +3297,6 @@ dependencies = [
  "time-core",
 ]
 
-[[package]]
-name = "tinytemplate"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be4d6b5f19ff7664e8c98d03e2139cb510db9b0a60b55f8e8709b689d939b6bc"
-dependencies = [
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "tinyvec"
 version = "1.6.0"
@@ -3925,16 +3837,6 @@ dependencies = [
  "walkdir",
 ]
 
-[[package]]
-name = "web-sys"
-version = "0.3.60"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcda906d8be16e728fd5adc5b729afad4e444e106ab28cd1c7256e54fa61510f"
-dependencies = [
- "js-sys",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "which"
 version = "4.4.0"
diff --git a/clap_bench/Cargo.toml b/clap_bench/Cargo.toml
index ddab748f9fe..97ba0effa62 100644
--- a/clap_bench/Cargo.toml
+++ b/clap_bench/Cargo.toml
@@ -13,35 +13,25 @@ release = false
 
 [dev-dependencies]
 clap = { path = "../", version = "4.0.0", default-features = false, features = ["std", "help"] }
-criterion = "0.5.1"
+divan = "0.1.11"
 lazy_static = "1.4.0"
 
 [[bench]]
 harness = false
-name = "01_default"
-path = "benches/01_default.rs"
+name = "empty"
 
 [[bench]]
 harness = false
-name = "02_simple"
-path = "benches/02_simple.rs"
+name = "simple"
 
 [[bench]]
 harness = false
-name = "03_complex"
-path = "benches/03_complex.rs"
+name = "complex"
 
 [[bench]]
 harness = false
-name = "04_new_help"
-path = "benches/04_new_help.rs"
+name = "rustup"
 
 [[bench]]
 harness = false
-name = "05_ripgrep"
-path = "benches/05_ripgrep.rs"
-
-[[bench]]
-harness = false
-name = "06_rustup"
-path = "benches/06_rustup.rs"
+name = "ripgrep"
diff --git a/clap_bench/benches/01_default.rs b/clap_bench/benches/01_default.rs
deleted file mode 100644
index 620b32b818f..00000000000
--- a/clap_bench/benches/01_default.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-use clap::Command;
-use criterion::{criterion_group, criterion_main, Criterion};
-
-pub fn build_empty(c: &mut Criterion) {
-    c.bench_function("build_empty", |b| b.iter(|| Command::new("claptests")));
-}
-
-pub fn parse_empty(c: &mut Criterion) {
-    c.bench_function("parse_empty", |b| {
-        b.iter(|| Command::new("claptests").get_matches_from(vec![""]))
-    });
-}
-
-criterion_group!(benches, build_empty, parse_empty);
-criterion_main!(benches);
diff --git a/clap_bench/benches/02_simple.rs b/clap_bench/benches/02_simple.rs
deleted file mode 100644
index 2b448ea95fa..00000000000
--- a/clap_bench/benches/02_simple.rs
+++ /dev/null
@@ -1,104 +0,0 @@
-use clap::{arg, Arg, Command};
-use criterion::{criterion_group, criterion_main, Criterion};
-
-macro_rules! create_app {
-    () => {{
-        Command::new("claptests")
-            .version("0.1")
-            .about("tests clap library")
-            .author("Kevin K. <kbknapp@gmail.com>")
-            .arg(arg!(-f --flag         "tests flags"))
-            .arg(arg!(-o --option <opt> "tests options"))
-            .arg(arg!([positional]      "tests positional"))
-    }};
-}
-
-pub fn build_simple(c: &mut Criterion) {
-    c.bench_function("build_simple", |b| b.iter(|| create_app!()));
-}
-
-pub fn build_with_flag(c: &mut Criterion) {
-    c.bench_function("build_with_flag", |b| {
-        b.iter(|| Command::new("claptests").arg(arg!(-s --some "something")))
-    });
-}
-
-pub fn build_with_flag_ref(c: &mut Criterion) {
-    c.bench_function("build_with_flag_ref", |b| {
-        b.iter(|| {
-            let arg = arg!(-s --some "something");
-            Command::new("claptests").arg(&arg)
-        })
-    });
-}
-
-pub fn build_with_opt(c: &mut Criterion) {
-    c.bench_function("build_with_opt", |b| {
-        b.iter(|| Command::new("claptests").arg(arg!(-s --some <FILE> "something").required(true)))
-    });
-}
-
-pub fn build_with_opt_ref(c: &mut Criterion) {
-    c.bench_function("build_with_opt_ref", |b| {
-        b.iter(|| {
-            let arg = arg!(-s --some <FILE> "something").required(true);
-            Command::new("claptests").arg(&arg)
-        })
-    });
-}
-
-pub fn build_with_pos(c: &mut Criterion) {
-    c.bench_function("build_with_pos", |b| {
-        b.iter(|| Command::new("claptests").arg(Arg::new("some")))
-    });
-}
-
-pub fn build_with_pos_ref(c: &mut Criterion) {
-    c.bench_function("build_with_pos_ref", |b| {
-        b.iter(|| {
-            let arg = Arg::new("some");
-            Command::new("claptests").arg(&arg)
-        })
-    });
-}
-
-pub fn parse_simple_with_flag(c: &mut Criterion) {
-    c.bench_function("parse_simple_with_flag", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "-f"]))
-    });
-}
-
-pub fn parse_simple_with_opt(c: &mut Criterion) {
-    c.bench_function("parse_simple_with_opt", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "-o", "option1"]))
-    });
-}
-
-pub fn parse_simple_with_pos(c: &mut Criterion) {
-    c.bench_function("parse_simple_with_pos", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "arg1"]))
-    });
-}
-
-pub fn parse_simple_with_complex(c: &mut Criterion) {
-    c.bench_function("parse_simple_with_complex", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "-o", "option1", "-f", "arg1"]))
-    });
-}
-
-criterion_group!(
-    benches,
-    parse_simple_with_complex,
-    parse_simple_with_pos,
-    parse_simple_with_opt,
-    parse_simple_with_flag,
-    build_with_pos_ref,
-    build_with_pos,
-    build_with_opt_ref,
-    build_with_opt,
-    build_with_flag_ref,
-    build_with_flag,
-    build_simple
-);
-
-criterion_main!(benches);
diff --git a/clap_bench/benches/03_complex.rs b/clap_bench/benches/03_complex.rs
deleted file mode 100644
index dc708e61d04..00000000000
--- a/clap_bench/benches/03_complex.rs
+++ /dev/null
@@ -1,296 +0,0 @@
-use clap::{arg, Arg, ArgAction, Command};
-use criterion::{criterion_group, criterion_main, Criterion};
-
-static OPT3_VALS: [&str; 2] = ["fast", "slow"];
-static POS3_VALS: [&str; 2] = ["vi", "emacs"];
-
-macro_rules! create_app {
-    () => {{
-        Command::new("claptests")
-            .version("0.1")
-            .about("tests clap library")
-            .author("Kevin K. <kbknapp@gmail.com>")
-            .arg(arg!(-o --option <opt> ... "tests options"))
-            .arg(arg!([positional] "tests positionals"))
-            .arg(arg!(-f --flag ... "tests flags").global(true))
-            .args([
-                arg!(flag2: -F "tests flags with exclusions")
-                    .conflicts_with("flag")
-                    .requires("option2"),
-                arg!(option2: --"long-option-2" <option2> "tests long options with exclusions")
-                    .conflicts_with("option")
-                    .requires("positional2"),
-                arg!([positional2] "tests positionals with exclusions"),
-                arg!(-O --Option <option3> "tests options with specific value sets")
-                    .value_parser(OPT3_VALS),
-                arg!([positional3] ... "tests positionals with specific values")
-                    .value_parser(POS3_VALS),
-                arg!(--multvals <s> "Tests multiple values not mult occs").value_names(["one", "two"]),
-                arg!(
-                    --multvalsmo <s> "Tests multiple values, not mult occs"
-                ).required(false).value_names(["one", "two"]),
-                arg!(--minvals2 <minvals> ... "Tests 2 min vals").num_args(2..),
-                arg!(--maxvals3 <maxvals> ... "Tests 3 max vals").num_args(1..=3),
-            ])
-            .subcommand(
-                Command::new("subcmd")
-                    .about("tests subcommands")
-                    .version("0.1")
-                    .author("Kevin K. <kbknapp@gmail.com>")
-                    .arg(arg!(-o --option <scoption> ... "tests options"))
-                    .arg(arg!([scpositional] "tests positionals"))
-            )
-    }};
-}
-
-pub fn build_from_builder(c: &mut Criterion) {
-    c.bench_function("build_from_builder", |b| {
-        b.iter(|| {
-            Command::new("claptests")
-                .version("0.1")
-                .about("tests clap library")
-                .author("Kevin K. <kbknapp@gmail.com>")
-                .arg(
-                    Arg::new("opt")
-                        .help("tests options")
-                        .short('o')
-                        .long("option")
-                        .num_args(1..)
-                        .action(ArgAction::Append),
-                )
-                .arg(Arg::new("positional").help("tests positionals").index(1))
-                .arg(
-                    Arg::new("flag")
-                        .short('f')
-                        .help("tests flags")
-                        .long("flag")
-                        .global(true)
-                        .action(ArgAction::Count),
-                )
-                .arg(
-                    Arg::new("flag2")
-                        .short('F')
-                        .help("tests flags with exclusions")
-                        .action(ArgAction::SetTrue)
-                        .conflicts_with("flag")
-                        .requires("option2"),
-                )
-                .arg(
-                    Arg::new("option2")
-                        .help("tests long options with exclusions")
-                        .conflicts_with("option")
-                        .requires("positional2")
-                        .action(ArgAction::Set)
-                        .long("long-option-2"),
-                )
-                .arg(
-                    Arg::new("positional2")
-                        .index(3)
-                        .help("tests positionals with exclusions"),
-                )
-                .arg(
-                    Arg::new("option3")
-                        .short('O')
-                        .long("Option")
-                        .action(ArgAction::Set)
-                        .help("tests options with specific value sets")
-                        .value_parser(OPT3_VALS),
-                )
-                .arg(
-                    Arg::new("positional3")
-                        .num_args(1..)
-                        .help("tests positionals with specific values")
-                        .index(4)
-                        .value_parser(POS3_VALS),
-                )
-                .arg(
-                    Arg::new("multvals")
-                        .long("multvals")
-                        .help("Tests multiple values, not mult occs")
-                        .value_names(["one", "two"]),
-                )
-                .arg(
-                    Arg::new("multvalsmo")
-                        .long("multvalsmo")
-                        .action(ArgAction::Append)
-                        .help("Tests multiple values, not mult occs")
-                        .value_names(["one", "two"]),
-                )
-                .arg(
-                    Arg::new("minvals")
-                        .long("minvals2")
-                        .action(ArgAction::Append)
-                        .help("Tests 2 min vals")
-                        .num_args(2..),
-                )
-                .arg(
-                    Arg::new("maxvals")
-                        .long("maxvals3")
-                        .action(ArgAction::Append)
-                        .help("Tests 3 max vals")
-                        .num_args(1..=3),
-                )
-                .subcommand(
-                    Command::new("subcmd")
-                        .about("tests subcommands")
-                        .version("0.1")
-                        .author("Kevin K. <kbknapp@gmail.com>")
-                        .arg(
-                            Arg::new("scoption")
-                                .short('o')
-                                .long("option")
-                                .num_args(1..)
-                                .action(ArgAction::Append)
-                                .help("tests options"),
-                        )
-                        .arg(Arg::new("scpositional").index(1).help("tests positionals")),
-                )
-        })
-    });
-}
-
-pub fn parse_complex(c: &mut Criterion) {
-    c.bench_function("parse_complex", |b| {
-        b.iter(|| create_app!().get_matches_from(vec![""]))
-    });
-}
-
-pub fn parse_complex_with_flag(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_flag", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "-f"]))
-    });
-}
-
-pub fn parse_complex_with_opt(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_opt", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "-o", "option1"]))
-    });
-}
-
-pub fn parse_complex_with_pos(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_pos", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "arg1"]))
-    });
-}
-
-pub fn parse_complex_with_sc(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_sc", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "subcmd"]))
-    });
-}
-
-pub fn parse_complex_with_sc_flag(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_sc_flag", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "subcmd", "-f"]))
-    });
-}
-
-pub fn parse_complex_with_sc_opt(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_sc_opt", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "subcmd", "-o", "option1"]))
-    });
-}
-
-pub fn parse_complex_with_sc_pos(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_sc_pos", |b| {
-        b.iter(|| create_app!().get_matches_from(vec!["myprog", "subcmd", "arg1"]))
-    });
-}
-
-pub fn parse_complex1(c: &mut Criterion) {
-    c.bench_function("parse_complex1", |b| {
-        b.iter(|| {
-            create_app!().get_matches_from(vec![
-                "myprog",
-                "-ff",
-                "-o",
-                "option1",
-                "arg1",
-                "-O",
-                "fast",
-                "arg2",
-                "--multvals",
-                "one",
-                "two",
-                "emacs",
-            ])
-        })
-    });
-}
-
-pub fn parse_complex2(c: &mut Criterion) {
-    c.bench_function("parse_complex2", |b| {
-        b.iter(|| {
-            create_app!().get_matches_from(vec![
-                "myprog",
-                "arg1",
-                "-f",
-                "arg2",
-                "--long-option-2",
-                "some",
-                "-O",
-                "slow",
-                "--multvalsmo",
-                "one",
-                "two",
-                "--minvals2",
-                "3",
-                "2",
-                "1",
-            ])
-        })
-    });
-}
-
-pub fn parse_args_negate_scs(c: &mut Criterion) {
-    c.bench_function("parse_args_negate_scs", |b| {
-        b.iter(|| {
-            create_app!()
-                .args_conflicts_with_subcommands(true)
-                .get_matches_from(vec![
-                    "myprog",
-                    "arg1",
-                    "-f",
-                    "arg2",
-                    "--long-option-2",
-                    "some",
-                    "-O",
-                    "slow",
-                    "--multvalsmo",
-                    "one",
-                    "two",
-                    "--minvals2",
-                    "3",
-                    "2",
-                    "1",
-                ])
-        })
-    });
-}
-
-pub fn parse_complex_with_sc_complex(c: &mut Criterion) {
-    c.bench_function("parse_complex_with_sc_complex", |b| {
-        b.iter(|| {
-            create_app!().get_matches_from(vec!["myprog", "subcmd", "-f", "-o", "option1", "arg1"])
-        })
-    });
-}
-
-criterion_group!(
-    benches,
-    build_from_builder,
-    parse_complex,
-    parse_complex_with_flag,
-    parse_complex_with_opt,
-    parse_complex_with_pos,
-    parse_complex_with_sc,
-    parse_complex_with_sc_flag,
-    parse_complex_with_sc_opt,
-    parse_complex_with_sc_pos,
-    parse_complex1,
-    parse_complex2,
-    parse_args_negate_scs,
-    parse_complex_with_sc_complex
-);
-
-criterion_main!(benches);
diff --git a/clap_bench/benches/04_new_help.rs b/clap_bench/benches/04_new_help.rs
deleted file mode 100644
index dfb2157e58e..00000000000
--- a/clap_bench/benches/04_new_help.rs
+++ /dev/null
@@ -1,220 +0,0 @@
-use clap::Command;
-use clap::{arg, Arg, ArgAction};
-use criterion::{criterion_group, criterion_main, Criterion};
-
-fn build_help(cmd: &mut Command) -> String {
-    let help = cmd.render_help();
-    help.to_string()
-}
-
-fn app_example1() -> Command {
-    Command::new("MyApp")
-        .version("1.0")
-        .author("Kevin K. <kbknapp@gmail.com>")
-        .about("Does awesome things")
-        .arg(
-            arg!(
-                -c --config <FILE> "Sets a custom config file"
-            )
-            .required(false),
-        )
-        .arg(arg!(<output> "Sets an optional output file"))
-        .arg(arg!(d: -d ... "Turn debugging information on"))
-        .subcommand(
-            Command::new("test")
-                .about("does testing things")
-                .arg(arg!(-l --list "lists test values")),
-        )
-}
-
-fn app_example2() -> Command {
-    Command::new("MyApp")
-        .version("1.0")
-        .author("Kevin K. <kbknapp@gmail.com>")
-        .about("Does awesome things")
-}
-
-fn app_example3() -> Command {
-    Command::new("MyApp")
-        .arg(
-            Arg::new("debug")
-                .help("turn on debugging information")
-                .short('d')
-                .action(ArgAction::SetTrue),
-        )
-        .args([
-            Arg::new("config")
-                .help("sets the config file to use")
-                .action(ArgAction::Set)
-                .short('c')
-                .long("config"),
-            Arg::new("input")
-                .help("the input file to use")
-                .required(true),
-        ])
-        .arg(arg!(--license "display the license file"))
-        .arg(arg!([output] "Supply an output file to use"))
-        .arg(
-            arg!(
-                -i --int <IFACE> "Set an interface to use"
-            )
-            .required(false),
-        )
-}
-
-fn app_example4() -> Command {
-    Command::new("MyApp")
-        .about("Parses an input file to do awesome things")
-        .version("1.0")
-        .author("Kevin K. <kbknapp@gmail.com>")
-        .arg(
-            Arg::new("debug")
-                .help("turn on debugging information")
-                .short('d')
-                .action(ArgAction::SetTrue)
-                .long("debug"),
-        )
-        .arg(
-            Arg::new("config")
-                .help("sets the config file to use")
-                .short('c')
-                .long("config"),
-        )
-        .arg(
-            Arg::new("input")
-                .help("the input file to use")
-                .index(1)
-                .required(true),
-        )
-}
-
-fn app_example5() -> Command {
-    Command::new("MyApp").arg(
-        Arg::new("awesome")
-            .help("turns up the awesome")
-            .short('a')
-            .long("awesome")
-            .action(ArgAction::Count),
-    )
-}
-
-fn app_example6() -> Command {
-    Command::new("MyApp")
-        .arg(
-            Arg::new("input")
-                .help("the input file to use")
-                .index(1)
-                .requires("config")
-                .required(true),
-        )
-        .arg(Arg::new("config").help("the config file to use").index(2))
-}
-
-fn app_example7() -> Command {
-    Command::new("MyApp")
-        .arg(Arg::new("config"))
-        .arg(Arg::new("output"))
-        .arg(
-            Arg::new("input")
-                .help("the input file to use")
-                .num_args(1..)
-                .action(ArgAction::Append)
-                .required(true)
-                .short('i')
-                .long("input")
-                .requires("config")
-                .conflicts_with("output"),
-        )
-}
-
-fn app_example8() -> Command {
-    Command::new("MyApp")
-        .arg(Arg::new("config"))
-        .arg(Arg::new("output"))
-        .arg(
-            Arg::new("input")
-                .help("the input file to use")
-                .num_args(1..)
-                .action(ArgAction::Append)
-                .required(true)
-                .short('i')
-                .long("input")
-                .requires("config")
-                .conflicts_with("output"),
-        )
-}
-
-fn app_example10() -> Command {
-    Command::new("myapp").about("does awesome things").arg(
-        Arg::new("CONFIG")
-            .help("The config file to use (default is \"config.json\")")
-            .short('c')
-            .action(ArgAction::Set),
-    )
-}
-
-pub fn example1(c: &mut Criterion) {
-    let mut cmd = app_example1();
-    c.bench_function("example1", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example2(c: &mut Criterion) {
-    let mut cmd = app_example2();
-    c.bench_function("example2", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example3(c: &mut Criterion) {
-    let mut cmd = app_example3();
-    c.bench_function("example3", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example4(c: &mut Criterion) {
-    let mut cmd = app_example4();
-    c.bench_function("example4", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example5(c: &mut Criterion) {
-    let mut cmd = app_example5();
-    c.bench_function("example5", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example6(c: &mut Criterion) {
-    let mut cmd = app_example6();
-    c.bench_function("example6", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example7(c: &mut Criterion) {
-    let mut cmd = app_example7();
-    c.bench_function("example7", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example8(c: &mut Criterion) {
-    let mut cmd = app_example8();
-    c.bench_function("example8", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example10(c: &mut Criterion) {
-    let mut cmd = app_example10();
-    c.bench_function("example10", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-pub fn example4_template(c: &mut Criterion) {
-    let mut cmd = app_example4().help_template("{name} {version}\n{author}\n{about}\n\nUSAGE:\n    {usage}\n\nOPTIONS:\n{options}\n\nARGS:\n{args}\n");
-    c.bench_function("example4_template", |b| b.iter(|| build_help(&mut cmd)));
-}
-
-criterion_group!(
-    benches,
-    example1,
-    example2,
-    example3,
-    example4,
-    example5,
-    example6,
-    example7,
-    example8,
-    example10,
-    example4_template
-);
-
-criterion_main!(benches);
diff --git a/clap_bench/benches/complex.rs b/clap_bench/benches/complex.rs
new file mode 100644
index 00000000000..6327a3b7753
--- /dev/null
+++ b/clap_bench/benches/complex.rs
@@ -0,0 +1,136 @@
+use clap::{arg, ArgMatches, Command};
+
+macro_rules! create_app {
+    () => {{
+        Command::new("claptests")
+            .version("0.1")
+            .about("tests clap library")
+            .author("Kevin K. <kbknapp@gmail.com>")
+            .arg(arg!(-o --option <opt> ... "tests options"))
+            .arg(arg!([positional] "tests positionals"))
+            .arg(arg!(-f --flag ... "tests flags").global(true))
+            .args([
+                arg!(flag2: -F "tests flags with exclusions")
+                    .conflicts_with("flag")
+                    .requires("option2"),
+                arg!(option2: --"long-option-2" <option2> "tests long options with exclusions")
+                    .conflicts_with("option")
+                    .requires("positional2"),
+                arg!([positional2] "tests positionals with exclusions"),
+                arg!(-O --Option <option3> "tests options with specific value sets")
+                    .value_parser(["fast", "slow"]),
+                arg!([positional3] ... "tests positionals with specific values")
+                    .value_parser(["vi", "emacs"]),
+                arg!(--multvals <s> "Tests multiple values not mult occs").value_names(["one", "two"]),
+                arg!(
+                    --multvalsmo <s> "Tests multiple values, not mult occs"
+                ).required(false).value_names(["one", "two"]),
+                arg!(--minvals2 <minvals> ... "Tests 2 min vals").num_args(2..),
+                arg!(--maxvals3 <maxvals> ... "Tests 3 max vals").num_args(1..=3),
+            ])
+            .subcommand(
+                Command::new("subcmd")
+                    .about("tests subcommands")
+                    .version("0.1")
+                    .author("Kevin K. <kbknapp@gmail.com>")
+                    .arg(arg!(-o --option <scoption> ... "tests options"))
+                    .arg(arg!([scpositional] "tests positionals"))
+            )
+    }};
+}
+
+#[divan::bench]
+fn build() -> Command {
+    create_app!()
+}
+
+#[divan::bench(args=COMPLEX_ARGS)]
+fn startup(args: &Args) -> ArgMatches {
+    create_app!().get_matches_from(args.args())
+}
+
+#[divan::bench]
+fn render_help(bencher: divan::Bencher) {
+    let mut cmd = create_app!();
+    bencher.bench_local(|| build_help(&mut cmd));
+}
+
+fn build_help(cmd: &mut Command) -> String {
+    let help = cmd.render_help();
+    help.to_string()
+}
+
+const COMPLEX_ARGS: &[Args] = &[
+    Args("empty", &[""]),
+    Args("flag", &["myprog", "-f"]),
+    Args("opt", &["myprog", "-o", "option1"]),
+    Args("pos", &["myprog", "arg1"]),
+    Args("sc", &["myprog", "subcmd"]),
+    Args("sc_flag", &["myprog", "subcmd", "-f"]),
+    Args("sc_opt", &["myprog", "subcmd", "-o", "option1"]),
+    Args("sc_pos", &["myprog", "subcmd", "arg1"]),
+    Args(
+        "sc_nested",
+        &["myprog", "subcmd", "-f", "-o", "option1", "arg1"],
+    ),
+    Args(
+        "mixed1",
+        &[
+            "myprog",
+            "-ff",
+            "-o",
+            "option1",
+            "arg1",
+            "-O",
+            "fast",
+            "arg2",
+            "--multvals",
+            "one",
+            "two",
+            "emacs",
+        ],
+    ),
+    Args(
+        "mixed2",
+        &[
+            "myprog",
+            "arg1",
+            "-f",
+            "arg2",
+            "--long-option-2",
+            "some",
+            "-O",
+            "slow",
+            "--multvalsmo",
+            "one",
+            "two",
+            "--minvals2",
+            "3",
+            "2",
+            "1",
+        ],
+    ),
+];
+
+#[derive(Debug)]
+pub struct Args(&'static str, &'static [&'static str]);
+
+impl Args {
+    pub const fn name(&self) -> &'static str {
+        self.0
+    }
+
+    pub const fn args(&self) -> &[&str] {
+        self.1
+    }
+}
+
+impl std::fmt::Display for Args {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.name().fmt(f)
+    }
+}
+
+fn main() {
+    divan::main();
+}
diff --git a/clap_bench/benches/empty.rs b/clap_bench/benches/empty.rs
new file mode 100644
index 00000000000..359ce5bcafb
--- /dev/null
+++ b/clap_bench/benches/empty.rs
@@ -0,0 +1,33 @@
+use clap::ArgMatches;
+use clap::Command;
+
+macro_rules! create_app {
+    () => {{
+        Command::new("claptests")
+    }};
+}
+
+#[divan::bench]
+fn build() -> Command {
+    create_app!()
+}
+
+#[divan::bench]
+fn startup() -> ArgMatches {
+    create_app!().get_matches_from(vec![""])
+}
+
+#[divan::bench]
+fn render_help(bencher: divan::Bencher) {
+    let mut cmd = create_app!();
+    bencher.bench_local(|| build_help(&mut cmd));
+}
+
+fn build_help(cmd: &mut Command) -> String {
+    let help = cmd.render_help();
+    help.to_string()
+}
+
+fn main() {
+    divan::main();
+}
diff --git a/clap_bench/benches/05_ripgrep.rs b/clap_bench/benches/ripgrep.rs
similarity index 58%
rename from clap_bench/benches/05_ripgrep.rs
rename to clap_bench/benches/ripgrep.rs
index 00662ea5d51..1ec422afb6d 100644
--- a/clap_bench/benches/05_ripgrep.rs
+++ b/clap_bench/benches/ripgrep.rs
@@ -3,239 +3,231 @@
 //
 // CLI used is adapted from ripgrep 48a8a3a691220f9e5b2b08f4051abe8655ea7e8a
 
-use clap::{value_parser, Arg, ArgAction, Command};
-use criterion::{criterion_group, criterion_main, Criterion};
 use std::collections::HashMap;
 
+use clap::{value_parser, Arg, ArgAction, ArgMatches, Command};
 use lazy_static::lazy_static;
 
-pub fn build_rg_with_short_help(c: &mut Criterion) {
-    c.bench_function("build_rg_with_short_help", |b| b.iter(app_short));
-}
+mod build {
+    use super::*;
 
-pub fn build_rg_with_long_help(c: &mut Criterion) {
-    c.bench_function("build_rg_with_long_help", |b| b.iter(app_long));
-}
+    #[divan::bench]
+    fn short_help() -> Command {
+        app_short()
+    }
 
-pub fn write_rg_short_help(c: &mut Criterion) {
-    let mut cmd = app_short();
-    c.bench_function("write_rg_short_help", |b| b.iter(|| build_help(&mut cmd)));
+    #[divan::bench]
+    fn long_help() -> Command {
+        app_long()
+    }
 }
 
-pub fn write_rg_long_help(c: &mut Criterion) {
-    let mut cmd = app_long();
-    c.bench_function("write_rg_long_help", |b| b.iter(|| build_help(&mut cmd)));
-}
+mod render_help {
+    use super::*;
 
-pub fn parse_rg(c: &mut Criterion) {
-    c.bench_function("parse_rg", |b| {
-        b.iter(|| app_short().get_matches_from(vec!["rg", "pat"]))
-    });
-}
+    #[divan::bench]
+    fn short_help(bencher: divan::Bencher) {
+        let mut cmd = app_short();
+        bencher.bench_local(|| build_help(&mut cmd));
+    }
 
-pub fn parse_rg_with_complex(c: &mut Criterion) {
-    c.bench_function("parse_rg_with_complex", |b| {
-        b.iter(|| {
-            app_short().get_matches_from(vec![
-                "rg",
-                "pat",
-                "-cFlN",
-                "-pqr=some",
-                "--null",
-                "--no-filename",
-                "--no-messages",
-                "-SH",
-                "-C5",
-                "--follow",
-                "-e some",
-            ])
-        })
-    });
+    #[divan::bench]
+    fn long_help(bencher: divan::Bencher) {
+        let mut cmd = app_long();
+        bencher.bench_local(|| build_help(&mut cmd));
+    }
 }
 
-pub fn parse_rg_with_lots(c: &mut Criterion) {
-    c.bench_function("parse_rg_with_lots", |b| {
-        b.iter(|| {
-            app_short().get_matches_from(vec![
-                "rg", "pat", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
-                "some", "some", "some", "some", "some", "some",
-            ])
-        })
-    });
+mod startup {
+    use super::*;
+
+    #[divan::bench]
+    fn simple() -> ArgMatches {
+        app_short().get_matches_from(vec!["rg", "pat"])
+    }
+
+    #[divan::bench]
+    fn complex() -> ArgMatches {
+        app_short().get_matches_from(vec![
+            "rg",
+            "pat",
+            "-cFlN",
+            "-pqr=some",
+            "--null",
+            "--no-filename",
+            "--no-messages",
+            "-SH",
+            "-C5",
+            "--follow",
+            "-e some",
+        ])
+    }
+
+    #[divan::bench]
+    fn xargs() -> ArgMatches {
+        app_short().get_matches_from(vec![
+            "rg", "pat", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
+            "some", "some", "some", "some", "some", "some", "some",
+        ])
+    }
 }
 
 const ABOUT: &str = "
@@ -929,14 +921,6 @@ lazy_static! {
     };
 }
 
-criterion_group!(
-    benches,
-    build_rg_with_short_help,
-    build_rg_with_long_help,
-    write_rg_short_help,
-    write_rg_long_help,
-    parse_rg,
-    parse_rg_with_complex,
-    parse_rg_with_lots
-);
-criterion_main!(benches);
+fn main() {
+    divan::main();
+}
diff --git a/clap_bench/benches/06_rustup.rs b/clap_bench/benches/rustup.rs
similarity index 96%
rename from clap_bench/benches/06_rustup.rs
rename to clap_bench/benches/rustup.rs
index 93df47fb188..bdec47be002 100644
--- a/clap_bench/benches/06_rustup.rs
+++ b/clap_bench/benches/rustup.rs
@@ -2,23 +2,25 @@
 //
 // CLI used is from rustup 408ed84f0e50511ed44a405dd91365e5da588790
 
-use clap::{Arg, ArgAction, ArgGroup, Command};
-use criterion::{criterion_group, criterion_main, Criterion};
+use clap::{Arg, ArgAction, ArgGroup, ArgMatches, Command};
 
-pub fn build_rustup(c: &mut Criterion) {
-    c.bench_function("build_rustup", |b| b.iter(build_cli));
+#[divan::bench]
+fn build() -> Command {
+    build_cli()
 }
 
-pub fn parse_rustup(c: &mut Criterion) {
-    c.bench_function("parse_rustup", |b| {
-        b.iter(|| build_cli().get_matches_from(vec![""]))
-    });
-}
+mod startup {
+    use super::*;
+
+    #[divan::bench]
+    fn empty() -> ArgMatches {
+        build_cli().get_matches_from([""])
+    }
 
-pub fn parse_rustup_with_sc(c: &mut Criterion) {
-    c.bench_function("parse_rustup_with_sc", |b| {
-        b.iter(|| build_cli().get_matches_from(vec!["rustup override add stable"]))
-    });
+    #[divan::bench]
+    fn sc() -> ArgMatches {
+        build_cli().get_matches_from(["rustup override add stable"])
+    }
 }
 
 fn build_cli() -> Command {
@@ -435,6 +437,6 @@ default browser.
 By default, it opens the documentation index. Use the various flags to
 open specific pieces of documentation.";
 
-criterion_group!(benches, build_rustup, parse_rustup, parse_rustup_with_sc);
-
-criterion_main!(benches);
+fn main() {
+    divan::main();
+}
diff --git a/clap_bench/benches/simple.rs b/clap_bench/benches/simple.rs
new file mode 100644
index 00000000000..6065011c441
--- /dev/null
+++ b/clap_bench/benches/simple.rs
@@ -0,0 +1,52 @@
+use clap::{arg, ArgMatches, Command};
+
+macro_rules! create_app {
+    () => {{
+        Command::new("claptests")
+            .version("0.1")
+            .about("tests clap library")
+            .author("Kevin K. <kbknapp@gmail.com>")
+            .arg(arg!(-f --flag         "tests flags"))
+            .arg(arg!(-o --option <opt> "tests options"))
+            .arg(arg!([positional]      "tests positional"))
+    }};
+}
+
+#[divan::bench]
+fn build() -> Command {
+    create_app!()
+}
+
+mod startup {
+    use super::*;
+
+    #[divan::bench]
+    fn flag() -> ArgMatches {
+        create_app!().get_matches_from(vec!["myprog", "-f"])
+    }
+
+    #[divan::bench]
+    fn opt() -> ArgMatches {
+        create_app!().get_matches_from(vec!["myprog", "-o", "option1"])
+    }
+
+    #[divan::bench]
+    fn pos() -> ArgMatches {
+        create_app!().get_matches_from(vec!["myprog", "arg1"])
+    }
+}
+
+#[divan::bench]
+fn render_help(bencher: divan::Bencher) {
+    let mut cmd = create_app!();
+    bencher.bench_local(|| build_help(&mut cmd));
+}
+
+fn build_help(cmd: &mut Command) -> String {
+    let help = cmd.render_help();
+    help.to_string()
+}
+
+fn main() {
+    divan::main();
+}