Unable to update OpenAI Realtime session (transcription prompt)

API
,
1

Hi,

I want to update the input_audio_transcription prompt during the Realtime session as mentioned here :

I use the following code :

         const transcriptionUpdate = {
              type: "transcription_session.update",
              session: {
                input_audio_format: "g711_ulaw", // "pcm16"
                input_audio_transcription: {
                  model: "gpt-4o-transcribe",
                  prompt: conversationHistoryForPrompt,
                  language: "fr",
                },
                turn_detection: {
                  type: "server_vad",
                  threshold: 0.5,
                  prefix_padding_ms: 300,
                  silence_duration_ms: 500,
               //   create_response: true, // By the way, I need to comment this parameter or I get error "Unknown parameter: 'session.turn_detection.create_response'"
                },
                input_audio_noise_reduction: {
                  type: "near_field",
                },
                // include: ["item.input_audio_transcription.logprobs"], // I comment this, I don't need it
              },
            };

But I get the following error:

 openAiWs.on('message') - Message OpenAI Reçu: {
  "type": "error",
  "event_id": "event_xxxxxxxxxx",
  "error": {
    "type": "invalid_request_error",
    "code": "invalid_parameter",
    "message": "Passing a transcription session update event to a realtime session is not allowed.",
    "param": "",
    "event_id": null
  }
}

So, is it impossible to update the transcription during a realtime session (using websocket) ? If it is the case, why is it mentioned in the openAI doc ? Am I missing someting to solve this issue ?

Thanks a lot.

2

I think you are using wrong endpoint. Try this:
realtime-ws-endpoint: wss://api.openai.com/v1/realtime?intent=transcription

3

Thanks. How should I use your recommendation in my code ? May you give a few lines of code to detail your answer. Thanks.