diff --git a/README.md b/README.md
index 7f7d539..8f0ee86 100644
--- a/README.md
+++ b/README.md
@@ -107,7 +107,9 @@ An example `session.update` that configures several aspects of the session, incl
     "instructions": "Call provided tools if appropriate for the user's input.",
     "input_audio_format": "pcm16",
     "input_audio_transcription": {
-      "model": "whisper-1"
+      "model": "whisper-1",  // We can also choose from "gpt-4o-mini-transcribe" or "gpt-4o-transcribe"
+      "language": "en", // optional language (ISO-639-1 format)
+      "prompt":"words you can expect in the input" // optional
     },
     "turn_detection": {
       "threshold": 0.4,
diff --git a/javascript/standalone/src/models.ts b/javascript/standalone/src/models.ts
index 27a1fc1..e8c3ad0 100644
--- a/javascript/standalone/src/models.ts
+++ b/javascript/standalone/src/models.ts
@@ -36,7 +36,9 @@ export type ToolChoice = "auto" | "none" | "required" | FunctionToolChoice;
 export type MessageRole = "system" | "assistant" | "user";
 
 export interface InputAudioTranscription {
-  model: "whisper-1";
+  model: "whisper-1" | "gpt-4o-mini-transcribe" | "gpt-4o-transcribe";
+  language?: string;
+  prompt?: string;
 }
 
 export interface ClientMessageBase {
diff --git a/python/rtclient/models.py b/python/rtclient/models.py
index cdef1ce..4eb0b78 100644
--- a/python/rtclient/models.py
+++ b/python/rtclient/models.py
@@ -44,7 +44,9 @@ class FunctionToolChoice(ModelWithDefaults):
 
 
 class InputAudioTranscription(BaseModel):
-    model: Literal["whisper-1"]
+    model: Literal["whisper-1", "gpt-4o-mini-transcribe", "gpt-4o-transcribe"]
+    language: Optional[str] = None
+    prompt: Optional[str] = None
 
 
 class ClientMessageBase(ModelWithDefaults):