Transcribe audio

OpenAI speech to text

Hosted audio transcription API that turns uploaded recordings or live audio into text, with older models for speaker labels and timestamps.

Methods

Method	Used for	How
API key	All API calls	Send as a bearer token in the `Authorization` header
Workload identity federation token	Short-lived access instead of a key	Bearer access token created by workload identity federation

Source9API authentication

Who creates the account: Not published
Where to get a key: Not stated on the pages read; the authentication reference says keys are secret and must stay server-side9
Other requirements: Free tier requires an allowed geography7

Read from OpenAI’s own pages on 2026-11-04. Every number links to the page a value came from. For agents, the same facts as markdown: /tools/transcribe-audio/openai-transcription.md