Audio Transcriptions

Use Audio Transcriptions to convert recorded speech into text for search, review, captions, or downstream automation. Typical uses include transcribing meetings and interviews, captioning recorded videos, making voice notes searchable, and feeding spoken input into classification or RAG pipelines.

Authenticate requests with an AIVAX API key. See Authentication for authorization guidance.

Choose a transcription model #

Query the available transcription models for the authenticated account before selecting one. Availability can vary by account configuration, so do not hard-code a catalog in your application.

Transcribe audio #

Send the audio as base64 with its format (wav, mp3, m4a, flac, ogg, webm, or aac). Decoded audio is subject to a size limit (see Request and payload limits), and billing follows the measured media duration (see Pricing) — files with no measurable duration are rejected.

Provide the optional language hint when the spoken language is known. It steers recognition toward that language and helps with accented speech and domain vocabulary; omit it when the language genuinely varies within one file and let detection handle it.

Review the returned text before using it in user-visible or irreversible actions: noisy recordings, multiple speakers, specialized vocabulary, and poor microphone quality can affect transcription quality. For files where speaker attribution matters, plan a diarization or review step downstream — the endpoint returns the transcript text, not speaker labels.

The embedded reference is the source of truth for accepted request forms, options, and response fields.

After the transcript #

A transcript is usually the start of a pipeline, not the end. Index it into a RAG collection to make recordings searchable, run it through Batch when there are many files, or feed it to Text classification to label conversations at scale. For live conversation instead of recorded audio, use Voice Sessions.

Pricing, limits, and errors #

For current availability, pricing, and account limits, see Pricing and Plans and Limits. Correct invalid or inaccessible audio before retrying a failed request.