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Usage

Speech-to-text models transcribe spoken audio into written text. They are accessed via the Audio Transcriptions API.

Supported audio formats

wav, wave, flac, m4a, aac, mp4, mp3, ogg, oga, webmA file is accepted when either its MIME type or its extension is on this list, and it must also pass a magic-byte check on the uploaded bytes. Renaming a file to a supported extension is not sufficient.

Response formats

Timestamps

Set timestamps: true to receive timing data alongside the transcript. The response adds a timestamps object whose granularity depends on the model:
nvidia/parakeet-tdt-0.6b-v3 is the default model, and it accepts timestamps: true without returning timings. There is no error and no warning — the response simply contains text and nothing else. If you need timings, choose a model from the table above and check that the timestamps key is present before reading it.
Word entries are { "word": "...", "start": 0.0, "end": 0.5 } and segment entries are { "text": "...", "start": 0.0, "end": 3.2 }, with all times in seconds.
Pricing is billed per second of input audio. See the Audio Transcriptions API for request examples and parameter details.