diff --git a/documentai/apiv1beta3/documentaipb/document_io.pb.go b/documentai/apiv1beta3/documentaipb/document_io.pb.go
index d3ba92c64e05..f6e8907330e6 100644
--- a/documentai/apiv1beta3/documentaipb/document_io.pb.go
+++ b/documentai/apiv1beta3/documentaipb/document_io.pb.go
@@ -413,11 +413,19 @@ type OcrConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Hints for the OCR model.
+	Hints *OcrConfig_Hints `protobuf:"bytes,2,opt,name=hints,proto3" json:"hints,omitempty"`
 	// Enables special handling for PDFs with existing text information. Results
 	// in better text extraction quality in such PDF inputs.
 	EnableNativePdfParsing bool `protobuf:"varint,3,opt,name=enable_native_pdf_parsing,json=enableNativePdfParsing,proto3" json:"enable_native_pdf_parsing,omitempty"`
+	// Enables intelligent document quality scores after OCR. Can help with
+	// diagnosing why OCR responses are of poor quality for a given input.
+	// Adds additional latency comparable to regular OCR to the process call.
+	EnableImageQualityScores bool `protobuf:"varint,4,opt,name=enable_image_quality_scores,json=enableImageQualityScores,proto3" json:"enable_image_quality_scores,omitempty"`
 	// A list of advanced OCR options to further fine-tune OCR behavior.
 	AdvancedOcrOptions []string `protobuf:"bytes,5,rep,name=advanced_ocr_options,json=advancedOcrOptions,proto3" json:"advanced_ocr_options,omitempty"`
+	// Includes symbol level OCR information if set to true.
+	EnableSymbol bool `protobuf:"varint,6,opt,name=enable_symbol,json=enableSymbol,proto3" json:"enable_symbol,omitempty"`
 }
 
 func (x *OcrConfig) Reset() {
@@ -452,6 +460,13 @@ func (*OcrConfig) Descriptor() ([]byte, []int) {
 	return file_google_cloud_documentai_v1beta3_document_io_proto_rawDescGZIP(), []int{6}
 }
 
+func (x *OcrConfig) GetHints() *OcrConfig_Hints {
+	if x != nil {
+		return x.Hints
+	}
+	return nil
+}
+
 func (x *OcrConfig) GetEnableNativePdfParsing() bool {
 	if x != nil {
 		return x.EnableNativePdfParsing
@@ -459,6 +474,13 @@ func (x *OcrConfig) GetEnableNativePdfParsing() bool {
 	return false
 }
 
+func (x *OcrConfig) GetEnableImageQualityScores() bool {
+	if x != nil {
+		return x.EnableImageQualityScores
+	}
+	return false
+}
+
 func (x *OcrConfig) GetAdvancedOcrOptions() []string {
 	if x != nil {
 		return x.AdvancedOcrOptions
@@ -466,6 +488,13 @@ func (x *OcrConfig) GetAdvancedOcrOptions() []string {
 	return nil
 }
 
+func (x *OcrConfig) GetEnableSymbol() bool {
+	if x != nil {
+		return x.EnableSymbol
+	}
+	return false
+}
+
 // The configuration used when outputting documents.
 type DocumentOutputConfig_GcsOutputConfig struct {
 	state         protoimpl.MessageState
@@ -593,6 +622,60 @@ func (x *DocumentOutputConfig_GcsOutputConfig_ShardingConfig) GetPagesOverlap()
 	return 0
 }
 
+// Hints for OCR Engine
+type OcrConfig_Hints struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// List of BCP-47 language codes to use for OCR. In most cases, not
+	// specifying it yields the best results since it enables automatic language
+	// detection. For languages based on the Latin alphabet, setting hints is
+	// not needed. In rare cases, when the language of the text in the
+	// image is known, setting a hint will help get better results (although it
+	// will be a significant hindrance if the hint is wrong).
+	LanguageHints []string `protobuf:"bytes,1,rep,name=language_hints,json=languageHints,proto3" json:"language_hints,omitempty"`
+}
+
+func (x *OcrConfig_Hints) Reset() {
+	*x = OcrConfig_Hints{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_cloud_documentai_v1beta3_document_io_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *OcrConfig_Hints) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*OcrConfig_Hints) ProtoMessage() {}
+
+func (x *OcrConfig_Hints) ProtoReflect() protoreflect.Message {
+	mi := &file_google_cloud_documentai_v1beta3_document_io_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use OcrConfig_Hints.ProtoReflect.Descriptor instead.
+func (*OcrConfig_Hints) Descriptor() ([]byte, []int) {
+	return file_google_cloud_documentai_v1beta3_document_io_proto_rawDescGZIP(), []int{6, 0}
+}
+
+func (x *OcrConfig_Hints) GetLanguageHints() []string {
+	if x != nil {
+		return x.LanguageHints
+	}
+	return nil
+}
+
 var File_google_cloud_documentai_v1beta3_document_io_proto protoreflect.FileDescriptor
 
 var file_google_cloud_documentai_v1beta3_document_io_proto_rawDesc = []byte{
@@ -663,30 +746,44 @@ var file_google_cloud_documentai_v1beta3_document_io_proto_rawDesc = []byte{
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+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -701,7 +798,7 @@ func file_google_cloud_documentai_v1beta3_document_io_proto_rawDescGZIP() []byte
 	return file_google_cloud_documentai_v1beta3_document_io_proto_rawDescData
 }
 
-var file_google_cloud_documentai_v1beta3_document_io_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_google_cloud_documentai_v1beta3_document_io_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_google_cloud_documentai_v1beta3_document_io_proto_goTypes = []interface{}{
 	(*RawDocument)(nil),                          // 0: google.cloud.documentai.v1beta3.RawDocument
 	(*GcsDocument)(nil),                          // 1: google.cloud.documentai.v1beta3.GcsDocument
@@ -712,20 +809,22 @@ var file_google_cloud_documentai_v1beta3_document_io_proto_goTypes = []interface
 	(*OcrConfig)(nil),                            // 6: google.cloud.documentai.v1beta3.OcrConfig
 	(*DocumentOutputConfig_GcsOutputConfig)(nil), // 7: google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig
 	(*DocumentOutputConfig_GcsOutputConfig_ShardingConfig)(nil), // 8: google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.ShardingConfig
-	(*fieldmaskpb.FieldMask)(nil),                               // 9: google.protobuf.FieldMask
+	(*OcrConfig_Hints)(nil),       // 9: google.cloud.documentai.v1beta3.OcrConfig.Hints
+	(*fieldmaskpb.FieldMask)(nil), // 10: google.protobuf.FieldMask
 }
 var file_google_cloud_documentai_v1beta3_document_io_proto_depIdxs = []int32{
-	1, // 0: google.cloud.documentai.v1beta3.GcsDocuments.documents:type_name -> google.cloud.documentai.v1beta3.GcsDocument
-	3, // 1: google.cloud.documentai.v1beta3.BatchDocumentsInputConfig.gcs_prefix:type_name -> google.cloud.documentai.v1beta3.GcsPrefix
-	2, // 2: google.cloud.documentai.v1beta3.BatchDocumentsInputConfig.gcs_documents:type_name -> google.cloud.documentai.v1beta3.GcsDocuments
-	7, // 3: google.cloud.documentai.v1beta3.DocumentOutputConfig.gcs_output_config:type_name -> google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig
-	9, // 4: google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.field_mask:type_name -> google.protobuf.FieldMask
-	8, // 5: google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.sharding_config:type_name -> google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.ShardingConfig
-	6, // [6:6] is the sub-list for method output_type
-	6, // [6:6] is the sub-list for method input_type
-	6, // [6:6] is the sub-list for extension type_name
-	6, // [6:6] is the sub-list for extension extendee
-	0, // [0:6] is the sub-list for field type_name
+	1,  // 0: google.cloud.documentai.v1beta3.GcsDocuments.documents:type_name -> google.cloud.documentai.v1beta3.GcsDocument
+	3,  // 1: google.cloud.documentai.v1beta3.BatchDocumentsInputConfig.gcs_prefix:type_name -> google.cloud.documentai.v1beta3.GcsPrefix
+	2,  // 2: google.cloud.documentai.v1beta3.BatchDocumentsInputConfig.gcs_documents:type_name -> google.cloud.documentai.v1beta3.GcsDocuments
+	7,  // 3: google.cloud.documentai.v1beta3.DocumentOutputConfig.gcs_output_config:type_name -> google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig
+	9,  // 4: google.cloud.documentai.v1beta3.OcrConfig.hints:type_name -> google.cloud.documentai.v1beta3.OcrConfig.Hints
+	10, // 5: google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.field_mask:type_name -> google.protobuf.FieldMask
+	8,  // 6: google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.sharding_config:type_name -> google.cloud.documentai.v1beta3.DocumentOutputConfig.GcsOutputConfig.ShardingConfig
+	7,  // [7:7] is the sub-list for method output_type
+	7,  // [7:7] is the sub-list for method input_type
+	7,  // [7:7] is the sub-list for extension type_name
+	7,  // [7:7] is the sub-list for extension extendee
+	0,  // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_google_cloud_documentai_v1beta3_document_io_proto_init() }
@@ -842,6 +941,18 @@ func file_google_cloud_documentai_v1beta3_document_io_proto_init() {
 				return nil
 			}
 		}
+		file_google_cloud_documentai_v1beta3_document_io_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*OcrConfig_Hints); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_google_cloud_documentai_v1beta3_document_io_proto_msgTypes[4].OneofWrappers = []interface{}{
 		(*BatchDocumentsInputConfig_GcsPrefix)(nil),
@@ -856,7 +967,7 @@ func file_google_cloud_documentai_v1beta3_document_io_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_google_cloud_documentai_v1beta3_document_io_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   9,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},