diff --git a/specification/cognitiveservices/OpenAI.Inference/client.tsp b/specification/cognitiveservices/OpenAI.Inference/client.tsp
index d890f79c304f..247acdd775c8 100644
--- a/specification/cognitiveservices/OpenAI.Inference/client.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/client.tsp
@@ -42,3 +42,29 @@ interface OpenAIClient {
 
   getEmbeddings is Azure.OpenAI.getEmbeddings;
 }
+
+@@clientName(Azure.OpenAI.GenerateSpeechFromTextBody.body,
+  "speechGenerationOptions",
+  "java"
+);
+@@clientName(Azure.OpenAI.GetAudioTranscriptionBody.body,
+  "audioTranscriptionOptions",
+  "java"
+);
+@@clientName(Azure.OpenAI.GetAudioTranslationBody.body,
+  "audioTranslationOptions",
+  "java"
+);
+@@clientName(Azure.OpenAI.GetChatCompletionsBody.body,
+  "chatCompletionsOptions",
+  "java"
+);
+@@clientName(Azure.OpenAI.GetCompletionsBody.body,
+  "completionsOptions",
+  "java"
+);
+@@clientName(Azure.OpenAI.GetEmbeddingsBody.body, "embeddingsOptions", "java");
+@@clientName(Azure.OpenAI.GetImageGenerationsBody.body,
+  "imageGenerationOptions",
+  "java"
+);
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_speech.tsp b/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_speech.tsp
index ffd791b045f6..14a4deb4cb0f 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_speech.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_speech.tsp
@@ -98,3 +98,15 @@ model SpeechGenerationResponse {
   @bodyRoot
   audio: bytes;
 }
+
+/**
+ * Get generate speech from text body.
+ */
+@added(ServiceApiVersions.v2024_02_15_Preview)
+model GenerateSpeechFromTextBody {
+  /**
+   * A representation of the request options that control the behavior of a text-to-speech operation.
+   */
+  @bodyRoot
+  body: SpeechGenerationOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_transcription.tsp b/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_transcription.tsp
index 97b7963aa9ff..cdc429e24250 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_transcription.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_transcription.tsp
@@ -4,6 +4,7 @@ import "./common.tsp";
 
 namespace Azure.OpenAI;
 
+using TypeSpec.Http;
 using TypeSpec.Versioning;
 using Azure.ClientGenerator.Core;
 
@@ -215,3 +216,15 @@ model AudioTranscription {
   @added(ServiceApiVersions.v2024_04_01_Preview)
   words?: AudioTranscriptionWord[];
 }
+
+/**
+ * Get audio transcription body.
+ */
+@added(ServiceApiVersions.v2024_02_15_Preview)
+model GetAudioTranscriptionBody {
+  /**
+   * The configuration information for an audio transcription request.
+   */
+  @body
+  body: AudioTranscriptionOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_translation.tsp b/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_translation.tsp
index 9c9733e9135d..45073fcfa038 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_translation.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/audio/audio_translation.tsp
@@ -4,6 +4,7 @@ import "./common.tsp";
 
 namespace Azure.OpenAI;
 
+using TypeSpec.Http;
 using TypeSpec.Versioning;
 using Azure.ClientGenerator.Core;
 
@@ -157,3 +158,15 @@ model AudioTranslation {
     """)
   segments?: AudioTranslationSegment[];
 }
+
+/**
+ * Get audio translation body.
+ */
+@added(ServiceApiVersions.v2024_02_15_Preview)
+model GetAudioTranslationBody {
+  /**
+   * The configuration information for an audio translation request.
+   */
+  @body
+  body: AudioTranslationOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/completions/chat_completions.tsp b/specification/cognitiveservices/OpenAI.Inference/models/completions/chat_completions.tsp
index e13ed63929d4..7a0adb81a445 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/completions/chat_completions.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/completions/chat_completions.tsp
@@ -401,3 +401,17 @@ model ChatTokenLogProbabilityInfo {
     """)
   bytes: int32[] | null;
 }
+
+/**
+ * Get chat completions request body.
+ */
+@added(ServiceApiVersions.v2023_05_15)
+model GetChatCompletionsBody {
+  /**
+   * The configuration information for a chat completions request.
+   * Completions support a wide variety of tasks and generate text that continues from or "completes"
+   * provided prompt data.
+   */
+  @bodyRoot
+  body: ChatCompletionsOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/completions/completions_create.tsp b/specification/cognitiveservices/OpenAI.Inference/models/completions/completions_create.tsp
index 0fba24798f4a..6245bdb81bda 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/completions/completions_create.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/completions/completions_create.tsp
@@ -239,3 +239,16 @@ model CompletionsLogProbabilityModel {
   @clientName("textOffsets", "java")
   textOffset: int32[];
 }
+
+/**
+ * Get completions request body.
+ */
+model GetCompletionsBody {
+  /**
+   * The configuration information for a completions request.
+   * Completions support a wide variety of tasks and generate text that continues from or "completes"
+   * provided prompt data.
+   */
+  @bodyRoot
+  body: CompletionsOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/embeddings_create.tsp b/specification/cognitiveservices/OpenAI.Inference/models/embeddings_create.tsp
index e698a2f1d70f..1f98e84a3e06 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/embeddings_create.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/embeddings_create.tsp
@@ -103,13 +103,15 @@ model EmbeddingsUsage {
   totalTokens: int32;
 }
 
-alias BodyParameter<
-  T,
-  TName extends valueof string = "body",
-  TDoc extends valueof string = "Body parameter."
-> = {
-  @doc(TDoc)
-  @friendlyName(TName)
+/**
+ * Get embeddings request body.
+ */
+model GetEmbeddingsBody {
+  /**
+   * The configuration information for an embeddings request.
+   * Embeddings measure the relatedness of text strings and are commonly used for search, clustering,
+   * recommendations, and other similar scenarios.
+   */
   @bodyRoot
-  body: T;
-};
+  body: EmbeddingsOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/models/images/images.tsp b/specification/cognitiveservices/OpenAI.Inference/models/images/images.tsp
index b0619f8b0f5e..ea51a02b9d92 100644
--- a/specification/cognitiveservices/OpenAI.Inference/models/images/images.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/models/images/images.tsp
@@ -291,3 +291,15 @@ model BatchImageGenerationOperationResponse {
   @doc("The error if the operation failed.")
   error?: Foundations.Error;
 }
+
+/**
+ * Get image generation body.
+ */
+@added(ServiceApiVersions.v2023_06_01_Preview)
+model GetImageGenerationsBody {
+  /**
+   * Represents the request data used to generate images.
+   */
+  @bodyRoot
+  body: ImageGenerationOptions;
+}
diff --git a/specification/cognitiveservices/OpenAI.Inference/routes/audio_speech.tsp b/specification/cognitiveservices/OpenAI.Inference/routes/audio_speech.tsp
index 92286d6f603e..46b30cac7d33 100644
--- a/specification/cognitiveservices/OpenAI.Inference/routes/audio_speech.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/routes/audio_speech.tsp
@@ -20,6 +20,6 @@ namespace Azure.OpenAI;
 @actionSeparator("/")
 op generateSpeechFromText is ResourceAction<
   Deployment,
-  BodyParameter<SpeechGenerationOptions>,
+  GenerateSpeechFromTextBody,
   SpeechGenerationResponse
 >;
diff --git a/specification/cognitiveservices/OpenAI.Inference/routes/audio_transcription.tsp b/specification/cognitiveservices/OpenAI.Inference/routes/audio_transcription.tsp
index 265ba7cedba0..7745646bdd74 100644
--- a/specification/cognitiveservices/OpenAI.Inference/routes/audio_transcription.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/routes/audio_transcription.tsp
@@ -28,7 +28,7 @@ namespace Azure.OpenAI;
 @sharedRoute
 op getAudioTranscriptionAsPlainText is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<AudioTranscriptionOptions>,
+  GetAudioTranscriptionBody,  // response_format must be one of: text, srt, vtt
   AudioTextResponse,
   MultipartFormDataRequestHeadersTraits & TextPlainResponseHeadersTraits
 >;
@@ -44,7 +44,7 @@ op getAudioTranscriptionAsPlainText is Azure.Core.ResourceAction<
 @sharedRoute
 op getAudioTranscriptionAsResponseObject is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<AudioTranscriptionOptions>,  // response_format must be unspecified (json) or one of: json, verbose_json
+  GetAudioTranscriptionBody,  // response_format must be unspecified (json) or one of: json, verbose_json
   AudioTranscription,
   MultipartFormDataRequestHeadersTraits
 >;
diff --git a/specification/cognitiveservices/OpenAI.Inference/routes/audio_translation.tsp b/specification/cognitiveservices/OpenAI.Inference/routes/audio_translation.tsp
index 18cf4a1d1c11..e1a058e29ae6 100644
--- a/specification/cognitiveservices/OpenAI.Inference/routes/audio_translation.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/routes/audio_translation.tsp
@@ -27,7 +27,7 @@ namespace Azure.OpenAI;
 @sharedRoute
 op getAudioTranslationAsPlainText is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<AudioTranslationOptions>,
+  GetAudioTranslationBody,  // response_format must be one of: text, srt, vtt
   AudioTextResponse,
   MultipartFormDataRequestHeadersTraits & TextPlainResponseHeadersTraits
 >;
@@ -42,7 +42,7 @@ op getAudioTranslationAsPlainText is Azure.Core.ResourceAction<
 @sharedRoute
 op getAudioTranslationAsResponseObject is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<AudioTranslationOptions>,  // response_format must be unspecified (json) or one of: json, verbose_json
+  GetAudioTranslationBody,  // response_format must be unspecified (json) or one of: json, verbose_json
   AudioTranslation,
   MultipartFormDataRequestHeadersTraits
 >;
diff --git a/specification/cognitiveservices/OpenAI.Inference/routes/completions.tsp b/specification/cognitiveservices/OpenAI.Inference/routes/completions.tsp
index 109be6748818..ee30995435ff 100644
--- a/specification/cognitiveservices/OpenAI.Inference/routes/completions.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/routes/completions.tsp
@@ -23,7 +23,7 @@ namespace Azure.OpenAI;
 @action("completions") //@convenientAPI(true)
 op getCompletions is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<CompletionsOptions>,
+  GetCompletionsBody,
   Completions
 >;
 
@@ -37,6 +37,6 @@ op getCompletions is Azure.Core.ResourceAction<
 @action("chat/completions") //@convenientAPI(true)
 op getChatCompletions is ResourceAction<
   Deployment,
-  BodyParameter<ChatCompletionsOptions>,
+  GetChatCompletionsBody,
   ChatCompletions
 >;
diff --git a/specification/cognitiveservices/OpenAI.Inference/routes/embeddings.tsp b/specification/cognitiveservices/OpenAI.Inference/routes/embeddings.tsp
index ecb49b09e4b1..a9b23b38186a 100644
--- a/specification/cognitiveservices/OpenAI.Inference/routes/embeddings.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/routes/embeddings.tsp
@@ -18,6 +18,6 @@ namespace Azure.OpenAI;
 @action("embeddings") //@convenientAPI(true)
 op getEmbeddings is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<EmbeddingsOptions>,
+  GetEmbeddingsBody,
   Embeddings
 >;
diff --git a/specification/cognitiveservices/OpenAI.Inference/routes/images.tsp b/specification/cognitiveservices/OpenAI.Inference/routes/images.tsp
index b0fcec522f40..db448d387b36 100644
--- a/specification/cognitiveservices/OpenAI.Inference/routes/images.tsp
+++ b/specification/cognitiveservices/OpenAI.Inference/routes/images.tsp
@@ -20,7 +20,7 @@ namespace Azure.OpenAI;
 @action("images/generations")
 op getImageGenerations is Azure.Core.ResourceAction<
   Deployment,
-  BodyParameter<ImageGenerationOptions>,
+  GetImageGenerationsBody,
   ImageGenerations
 >;
 
@@ -54,7 +54,7 @@ op getAzureBatchImageGenerationOperationStatus is RpcOperation<
   }
 )
 op beginAzureBatchImageGeneration is OaiLongRunningRpcOperation<
-  BodyParameter<ImageGenerationOptions>,
+  GetImageGenerationsBody,
   BatchImageGenerationOperationResponse,
   BatchImageGenerationOperationResponse
 >;
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-06-01-preview/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-06-01-preview/generated.json
index 37e3541babb0..80ad47ec677a 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-06-01-preview/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-06-01-preview/generated.json
@@ -75,13 +75,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -127,13 +121,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -179,13 +167,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -224,13 +206,7 @@
             "$ref": "#/parameters/Azure.Core.Foundations.ApiVersionParameter"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ImageGenerationOptions"
-            }
+            "$ref": "#/parameters/GetImageGenerationsBody"
           }
         ],
         "responses": {
@@ -1384,6 +1360,46 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetImageGenerationsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "Represents the request data used to generate images.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ImageGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-07-01-preview/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-07-01-preview/generated.json
index bd8333d75792..5a9d2881f642 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-07-01-preview/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2023-07-01-preview/generated.json
@@ -75,13 +75,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -127,13 +121,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -179,13 +167,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -224,13 +206,7 @@
             "$ref": "#/parameters/Azure.Core.Foundations.ApiVersionParameter"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ImageGenerationOptions"
-            }
+            "$ref": "#/parameters/GetImageGenerationsBody"
           }
         ],
         "responses": {
@@ -1481,6 +1457,46 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetImageGenerationsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "Represents the request data used to generate images.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ImageGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-02-15-preview/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-02-15-preview/generated.json
index 9cd76529a51e..4100ca08b327 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-02-15-preview/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-02-15-preview/generated.json
@@ -79,13 +79,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/SpeechGenerationOptions"
-            }
+            "$ref": "#/parameters/GenerateSpeechFromTextBody"
           }
         ],
         "responses": {
@@ -402,13 +396,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -475,13 +463,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -527,13 +509,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -579,13 +555,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ImageGenerationOptions"
-            }
+            "$ref": "#/parameters/GetImageGenerationsBody"
           }
         ],
         "responses": {
@@ -4292,6 +4262,56 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GenerateSpeechFromTextBody": {
+      "name": "body",
+      "in": "body",
+      "description": "A representation of the request options that control the behavior of a text-to-speech operation.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/SpeechGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetImageGenerationsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "Represents the request data used to generate images.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ImageGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-03-01-preview/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-03-01-preview/generated.json
index 0ad10094651e..9cbe5a8b34aa 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-03-01-preview/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-03-01-preview/generated.json
@@ -79,13 +79,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/SpeechGenerationOptions"
-            }
+            "$ref": "#/parameters/GenerateSpeechFromTextBody"
           }
         ],
         "responses": {
@@ -402,13 +396,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -475,13 +463,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -527,13 +509,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -579,13 +555,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ImageGenerationOptions"
-            }
+            "$ref": "#/parameters/GetImageGenerationsBody"
           }
         ],
         "responses": {
@@ -4323,6 +4293,56 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GenerateSpeechFromTextBody": {
+      "name": "body",
+      "in": "body",
+      "description": "A representation of the request options that control the behavior of a text-to-speech operation.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/SpeechGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetImageGenerationsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "Represents the request data used to generate images.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ImageGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-04-01-preview/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-04-01-preview/generated.json
index cf5f9a0abc39..cca5dd586ba7 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-04-01-preview/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-04-01-preview/generated.json
@@ -79,13 +79,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/SpeechGenerationOptions"
-            }
+            "$ref": "#/parameters/GenerateSpeechFromTextBody"
           }
         ],
         "responses": {
@@ -436,13 +430,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -509,13 +497,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -561,13 +543,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -613,13 +589,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ImageGenerationOptions"
-            }
+            "$ref": "#/parameters/GetImageGenerationsBody"
           }
         ],
         "responses": {
@@ -4491,6 +4461,56 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GenerateSpeechFromTextBody": {
+      "name": "body",
+      "in": "body",
+      "description": "A representation of the request options that control the behavior of a text-to-speech operation.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/SpeechGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetImageGenerationsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "Represents the request data used to generate images.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ImageGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-05-01-preview/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-05-01-preview/generated.json
index 1a0d46d86c47..bdcd2c2140ec 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-05-01-preview/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/preview/2024-05-01-preview/generated.json
@@ -79,13 +79,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/SpeechGenerationOptions"
-            }
+            "$ref": "#/parameters/GenerateSpeechFromTextBody"
           }
         ],
         "responses": {
@@ -436,13 +430,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -509,13 +497,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -561,13 +543,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -613,13 +589,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ImageGenerationOptions"
-            }
+            "$ref": "#/parameters/GetImageGenerationsBody"
           }
         ],
         "responses": {
@@ -4808,6 +4778,56 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GenerateSpeechFromTextBody": {
+      "name": "body",
+      "in": "body",
+      "description": "A representation of the request options that control the behavior of a text-to-speech operation.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/SpeechGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetImageGenerationsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "Represents the request data used to generate images.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ImageGenerationOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2022-12-01/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2022-12-01/generated.json
index 39a5f276c4a8..67d61372b4ff 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2022-12-01/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2022-12-01/generated.json
@@ -75,13 +75,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -127,13 +121,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -606,6 +594,26 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }
diff --git a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2023-05-15/generated.json b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2023-05-15/generated.json
index ab36ec1d5ceb..2b0040733354 100644
--- a/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2023-05-15/generated.json
+++ b/specification/cognitiveservices/data-plane/AzureOpenAI/inference/stable/2023-05-15/generated.json
@@ -75,13 +75,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/ChatCompletionsOptions"
-            }
+            "$ref": "#/parameters/GetChatCompletionsBody"
           }
         ],
         "responses": {
@@ -127,13 +121,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/CompletionsOptions"
-            }
+            "$ref": "#/parameters/GetCompletionsBody"
           }
         ],
         "responses": {
@@ -179,13 +167,7 @@
             "type": "string"
           },
           {
-            "name": "body",
-            "in": "body",
-            "description": "Body parameter.",
-            "required": true,
-            "schema": {
-              "$ref": "#/definitions/EmbeddingsOptions"
-            }
+            "$ref": "#/parameters/GetEmbeddingsBody"
           }
         ],
         "responses": {
@@ -935,6 +917,36 @@
       "minLength": 1,
       "x-ms-parameter-location": "method",
       "x-ms-client-name": "apiVersion"
+    },
+    "GetChatCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a chat completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/ChatCompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetCompletionsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for a completions request.\nCompletions support a wide variety of tasks and generate text that continues from or \"completes\"\nprovided prompt data.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/CompletionsOptions"
+      },
+      "x-ms-parameter-location": "method"
+    },
+    "GetEmbeddingsBody": {
+      "name": "body",
+      "in": "body",
+      "description": "The configuration information for an embeddings request.\nEmbeddings measure the relatedness of text strings and are commonly used for search, clustering,\nrecommendations, and other similar scenarios.",
+      "required": true,
+      "schema": {
+        "$ref": "#/definitions/EmbeddingsOptions"
+      },
+      "x-ms-parameter-location": "method"
     }
   }
 }