diff --git a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuan2Llm.cs b/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuan2Llm.cs
deleted file mode 100644
index 8ee2af3..0000000
--- a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuan2Llm.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-namespace Cnblogs.DashScope.Sdk.BaiChuan;
-
-/// <summary>
-/// BaiChuan2 model, supports prompt and message format.
-/// </summary>
-public enum BaiChuan2Llm
-{
-    /// <summary>
-    /// baichuan2-7b-chat-v1
-    /// </summary>
-    BaiChuan2_7BChatV1 = 1,
-
-    /// <summary>
-    /// baichuan2-13b-chat-v1
-    /// </summary>
-    BaiChuan2_13BChatV1 = 2
-}
diff --git a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanLlm.cs b/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanLlm.cs
deleted file mode 100644
index 53c5d8a..0000000
--- a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanLlm.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-namespace Cnblogs.DashScope.Sdk.BaiChuan;
-
-/// <summary>
-/// Supported baichuan model: https://help.aliyun.com/zh/dashscope/developer-reference/api-details-2
-/// </summary>
-public enum BaiChuanLlm
-{
-    /// <summary>
-    /// baichuan-7b-v1
-    /// </summary>
-    BaiChuan7B = 1
-}
diff --git a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanLlmName.cs b/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanLlmName.cs
deleted file mode 100644
index b5ffff1..0000000
--- a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanLlmName.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-namespace Cnblogs.DashScope.Sdk.BaiChuan;
-
-internal static class BaiChuanLlmName
-{
-    public static string GetModelName(this BaiChuanLlm llm)
-    {
-        return llm switch
-        {
-            BaiChuanLlm.BaiChuan7B => "baichuan-7b-v1",
-            _ => ThrowHelper.UnknownModelName(nameof(llm), llm)
-        };
-    }
-
-    public static string GetModelName(this BaiChuan2Llm llm)
-    {
-        return llm switch
-        {
-            BaiChuan2Llm.BaiChuan2_7BChatV1 => "baichuan2-7b-chat-v1",
-            BaiChuan2Llm.BaiChuan2_13BChatV1 => "baichuan2-13b-chat-v1",
-            _ => ThrowHelper.UnknownModelName(nameof(llm), llm)
-        };
-    }
-}
diff --git a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanTextGenerationApi.cs b/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanTextGenerationApi.cs
deleted file mode 100644
index ef3ec60..0000000
--- a/src/Cnblogs.DashScope.Sdk/BaiChuan/BaiChuanTextGenerationApi.cs
+++ /dev/null
@@ -1,87 +0,0 @@
-using Cnblogs.DashScope.Core;
-
-namespace Cnblogs.DashScope.Sdk.BaiChuan;
-
-/// <summary>
-/// BaiChuan LLM generation apis, doc: https://help.aliyun.com/zh/dashscope/developer-reference/api-details-2
-/// </summary>
-public static class BaiChuanTextGenerationApi
-{
-    /// <summary>
-    /// Get text completion from baichuan model.
-    /// </summary>
-    /// <param name="client">The <see cref="IDashScopeClient"/>.</param>
-    /// <param name="llm">The llm to use.</param>
-    /// <param name="prompt">The prompt to generate completion from.</param>
-    /// <returns></returns>
-    public static Task<ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>> GetBaiChuanTextCompletionAsync(
-        this IDashScopeClient client,
-        BaiChuanLlm llm,
-        string prompt)
-    {
-        return client.GetBaiChuanTextCompletionAsync(llm.GetModelName(), prompt);
-    }
-
-    /// <summary>
-    /// Get text completion from baichuan model.
-    /// </summary>
-    /// <param name="client">The <see cref="IDashScopeClient"/>.</param>
-    /// <param name="llm">The llm to use.</param>
-    /// <param name="prompt">The prompt to generate completion from.</param>
-    /// <returns></returns>
-    public static Task<ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>> GetBaiChuanTextCompletionAsync(
-        this IDashScopeClient client,
-        string llm,
-        string prompt)
-    {
-        return client.GetTextCompletionAsync(
-            new ModelRequest<TextGenerationInput, ITextGenerationParameters>
-            {
-                Model = llm,
-                Input = new TextGenerationInput { Prompt = prompt },
-                Parameters = null
-            });
-    }
-
-    /// <summary>
-    /// Get text completion from baichuan model.
-    /// </summary>
-    /// <param name="client">The <see cref="IDashScopeClient"/>.</param>
-    /// <param name="llm">The model name.</param>
-    /// <param name="messages">The context messages.</param>
-    /// <param name="resultFormat">Can be 'text' or 'message', defaults to 'text'. Call <see cref="ResultFormats"/> to get available options.</param>
-    /// <returns></returns>
-    public static Task<ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>> GetBaiChuanTextCompletionAsync(
-        this IDashScopeClient client,
-        BaiChuan2Llm llm,
-        IEnumerable<TextChatMessage> messages,
-        string? resultFormat = null)
-    {
-        return client.GetBaiChuanTextCompletionAsync(llm.GetModelName(), messages, resultFormat);
-    }
-
-    /// <summary>
-    /// Get text completion from baichuan model.
-    /// </summary>
-    /// <param name="client">The <see cref="IDashScopeClient"/>.</param>
-    /// <param name="llm">The model name.</param>
-    /// <param name="messages">The context messages.</param>
-    /// <param name="resultFormat">Can be 'text' or 'message', defaults to 'text'. Call <see cref="ResultFormats"/> to get available options.</param>
-    /// <returns></returns>
-    public static Task<ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>> GetBaiChuanTextCompletionAsync(
-        this IDashScopeClient client,
-        string llm,
-        IEnumerable<TextChatMessage> messages,
-        string? resultFormat = null)
-    {
-        return client.GetTextCompletionAsync(
-            new ModelRequest<TextGenerationInput, ITextGenerationParameters>
-            {
-                Model = llm,
-                Input = new TextGenerationInput { Messages = messages },
-                Parameters = string.IsNullOrEmpty(resultFormat) == false
-                    ? new TextGenerationParameters { ResultFormat = resultFormat }
-                    : null
-            });
-    }
-}
diff --git a/src/Cnblogs.DashScope.Sdk/Llama2/Llama2Model.cs b/src/Cnblogs.DashScope.Sdk/Llama2/Llama2Model.cs
deleted file mode 100644
index 827fd14..0000000
--- a/src/Cnblogs.DashScope.Sdk/Llama2/Llama2Model.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-namespace Cnblogs.DashScope.Sdk.Llama2;
-
-/// <summary>
-/// Supported models for LLaMa2.
-/// </summary>
-public enum Llama2Model
-{
-    /// <summary>
-    /// llama2-7b-chat-v2
-    /// </summary>
-    Chat7Bv2 = 1,
-
-    /// <summary>
-    /// llama2-13b-chat-v2
-    /// </summary>
-    Chat13Bv2 = 2
-}
diff --git a/src/Cnblogs.DashScope.Sdk/Llama2/Llama2ModelNames.cs b/src/Cnblogs.DashScope.Sdk/Llama2/Llama2ModelNames.cs
deleted file mode 100644
index 44357d3..0000000
--- a/src/Cnblogs.DashScope.Sdk/Llama2/Llama2ModelNames.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-namespace Cnblogs.DashScope.Sdk.Llama2;
-
-internal static class Llama2ModelNames
-{
-    public static string GetModelName(this Llama2Model model)
-    {
-        return model switch
-        {
-            Llama2Model.Chat7Bv2 => "llama2-7b-chat-v2",
-            Llama2Model.Chat13Bv2 => "llama2-13b-chat-v2",
-            _ => ThrowHelper.UnknownModelName(nameof(model), model)
-        };
-    }
-}
diff --git a/src/Cnblogs.DashScope.Sdk/Llama2/Llama2TextGenerationApi.cs b/src/Cnblogs.DashScope.Sdk/Llama2/Llama2TextGenerationApi.cs
deleted file mode 100644
index 5fa9b45..0000000
--- a/src/Cnblogs.DashScope.Sdk/Llama2/Llama2TextGenerationApi.cs
+++ /dev/null
@@ -1,53 +0,0 @@
-using Cnblogs.DashScope.Core;
-
-namespace Cnblogs.DashScope.Sdk.Llama2;
-
-/// <summary>
-/// Extensions for llama2 text generation, docs: https://help.aliyun.com/zh/dashscope/developer-reference/api-details-11
-/// </summary>
-public static class Llama2TextGenerationApi
-{
-    /// <summary>
-    /// Get text completion from llama2 model.
-    /// </summary>
-    /// <param name="client">The <see cref="IDashScopeClient"/>.</param>
-    /// <param name="model">The model name.</param>
-    /// <param name="messages">The context messages.</param>
-    /// <param name="resultFormat">Can be 'text' or 'message'. Call <see cref="ResultFormats"/> to get available options.</param>
-    /// <returns></returns>
-    public static async Task<ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>>
-        GetLlama2TextCompletionAsync(
-            this IDashScopeClient client,
-            Llama2Model model,
-            IEnumerable<TextChatMessage> messages,
-            string? resultFormat = null)
-    {
-        return await client.GetLlama2TextCompletionAsync(model.GetModelName(), messages, resultFormat);
-    }
-
-    /// <summary>
-    /// Get text completion from llama2 model.
-    /// </summary>
-    /// <param name="client">The <see cref="IDashScopeClient"/>.</param>
-    /// <param name="model">The model name.</param>
-    /// <param name="messages">The context messages.</param>
-    /// <param name="resultFormat">Can be 'text' or 'message'. Call <see cref="ResultFormats"/> to get available options.</param>
-    /// <returns></returns>
-    public static async Task<ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>>
-        GetLlama2TextCompletionAsync(
-            this IDashScopeClient client,
-            string model,
-            IEnumerable<TextChatMessage> messages,
-            string? resultFormat = null)
-    {
-        return await client.GetTextCompletionAsync(
-            new ModelRequest<TextGenerationInput, ITextGenerationParameters>
-            {
-                Model = model,
-                Input = new TextGenerationInput { Messages = messages },
-                Parameters = resultFormat != null
-                    ? new TextGenerationParameters { ResultFormat = resultFormat }
-                    : null
-            });
-    }
-}
diff --git a/test/Cnblogs.DashScope.Sdk.UnitTests/BaiChuanApiTests.cs b/test/Cnblogs.DashScope.Sdk.UnitTests/BaiChuanApiTests.cs
deleted file mode 100644
index 579789e..0000000
--- a/test/Cnblogs.DashScope.Sdk.UnitTests/BaiChuanApiTests.cs
+++ /dev/null
@@ -1,110 +0,0 @@
-using Cnblogs.DashScope.Core;
-using Cnblogs.DashScope.Sdk.BaiChuan;
-using Cnblogs.DashScope.Tests.Shared.Utils;
-using NSubstitute;
-
-namespace Cnblogs.DashScope.Sdk.UnitTests;
-
-public class BaiChuanApiTests
-{
-    [Fact]
-    public async Task BaiChuanTextGeneration_UseEnum_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        _ = await client.GetBaiChuanTextCompletionAsync(BaiChuanLlm.BaiChuan7B, Cases.Prompt);
-
-        // Assert
-        _ = await client.Received().GetTextCompletionAsync(
-            Arg.Is<ModelRequest<TextGenerationInput, ITextGenerationParameters>>(
-                s => s.Model == "baichuan-7b-v1" && s.Input.Prompt == Cases.Prompt && s.Parameters == null));
-    }
-
-    [Fact]
-    public async Task BaiChuanTextGeneration_UseInvalidEnum_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        var act = async () => await client.GetBaiChuanTextCompletionAsync((BaiChuanLlm)(-1), Cases.Prompt);
-
-        // Assert
-        await Assert.ThrowsAsync<ArgumentOutOfRangeException>(act);
-    }
-
-    [Fact]
-    public async Task BaiChuanTextGeneration_CustomModel_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        _ = await client.GetBaiChuanTextCompletionAsync(Cases.CustomModelName, Cases.Prompt);
-
-        // Assert
-        _ = await client.Received().GetTextCompletionAsync(
-            Arg.Is<ModelRequest<TextGenerationInput, ITextGenerationParameters>>(
-                s => s.Model == Cases.CustomModelName && s.Input.Prompt == Cases.Prompt && s.Parameters == null));
-    }
-
-    [Fact]
-    public async Task BaiChuan2TextGeneration_UseEnum_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        var act = async () => await client.GetBaiChuanTextCompletionAsync(
-            (BaiChuan2Llm)(-1),
-            Cases.TextMessages,
-            ResultFormats.Message);
-
-        // Assert
-        await Assert.ThrowsAsync<ArgumentOutOfRangeException>(act);
-    }
-
-    [Fact]
-    public async Task BaiChuan2TextGeneration_UseInvalidEnum_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        _ = await client.GetBaiChuanTextCompletionAsync(
-            BaiChuan2Llm.BaiChuan2_13BChatV1,
-            Cases.TextMessages,
-            ResultFormats.Message);
-
-        // Assert
-        _ = await client.Received().GetTextCompletionAsync(
-            Arg.Is<ModelRequest<TextGenerationInput, ITextGenerationParameters>>(
-                s => s.Model == "baichuan2-13b-chat-v1"
-                     && s.Input.Messages == Cases.TextMessages
-                     && s.Parameters != null
-                     && s.Parameters.ResultFormat == ResultFormats.Message));
-    }
-
-    [Fact]
-    public async Task BaiChuan2TextGeneration_CustomModel_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        _ = await client.GetBaiChuanTextCompletionAsync(
-            Cases.CustomModelName,
-            Cases.TextMessages,
-            ResultFormats.Message);
-
-        // Assert
-        _ = await client.Received().GetTextCompletionAsync(
-            Arg.Is<ModelRequest<TextGenerationInput, ITextGenerationParameters>>(
-                s => s.Model == Cases.CustomModelName
-                     && s.Input.Messages == Cases.TextMessages
-                     && s.Parameters != null
-                     && s.Parameters.ResultFormat == ResultFormats.Message));
-    }
-}
diff --git a/test/Cnblogs.DashScope.Sdk.UnitTests/Llama2TextGenerationApiTests.cs b/test/Cnblogs.DashScope.Sdk.UnitTests/Llama2TextGenerationApiTests.cs
deleted file mode 100644
index 7daf36c..0000000
--- a/test/Cnblogs.DashScope.Sdk.UnitTests/Llama2TextGenerationApiTests.cs
+++ /dev/null
@@ -1,61 +0,0 @@
-using Cnblogs.DashScope.Core;
-using Cnblogs.DashScope.Sdk.Llama2;
-using Cnblogs.DashScope.Tests.Shared.Utils;
-using NSubstitute;
-
-namespace Cnblogs.DashScope.Sdk.UnitTests;
-
-public class Llama2TextGenerationApiTests
-{
-    [Fact]
-    public async Task Llama2_UseEnum_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        _ = await client.GetLlama2TextCompletionAsync(Llama2Model.Chat13Bv2, Cases.TextMessages, ResultFormats.Message);
-
-        // Assert
-        _ = await client.Received().GetTextCompletionAsync(
-            Arg.Is<ModelRequest<TextGenerationInput, ITextGenerationParameters>>(s
-                => s.Input.Messages == Cases.TextMessages
-                   && s.Model == "llama2-13b-chat-v2"
-                   && s.Parameters != null
-                   && s.Parameters.ResultFormat == ResultFormats.Message));
-    }
-
-    [Fact]
-    public async Task Llama2_UseInvalidEnum_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        var act = async () => await client.GetLlama2TextCompletionAsync(
-            (Llama2Model)(-1),
-            Cases.TextMessages,
-            ResultFormats.Message);
-
-        // Assert
-        await Assert.ThrowsAsync<ArgumentOutOfRangeException>(act);
-    }
-
-    [Fact]
-    public async Task Llama2_CustomModel_SuccessAsync()
-    {
-        // Arrange
-        var client = Substitute.For<IDashScopeClient>();
-
-        // Act
-        _ = await client.GetLlama2TextCompletionAsync(Cases.CustomModelName, Cases.TextMessages, ResultFormats.Message);
-
-        // Assert
-        _ = await client.Received().GetTextCompletionAsync(
-            Arg.Is<ModelRequest<TextGenerationInput, ITextGenerationParameters>>(s
-                => s.Input.Messages == Cases.TextMessages
-                   && s.Model == Cases.CustomModelName
-                   && s.Parameters != null
-                   && s.Parameters.ResultFormat == ResultFormats.Message));
-    }
-}