OpenAI

OpenAI provides speech-to-text for Vapi voice agents.

You can use OpenAI through Vapi’s default integration, or connect your own account in Integrations.

Supported capability

Speech-to-text

Set transcriber.provider to openai and transcriber.model to a transcription model.

$
curl -X PATCH "https://api.vapi.ai/assistant/ASSISTANT_ID" \
>
  -H "Authorization: Bearer $VAPI_API_KEY" \
>
  -H "Content-Type: application/json" \
>
  -d '{
>
    "transcriber": { "provider": "openai", "model": "gpt-4o-transcribe" }
>
  }'

For additional API configuration options, review the OpenAITranscriber fields in the Create Assistant API reference.

Supported languages

The following language values are currently accepted by Vapi for this provider.

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