Deepgram · Transcription model

Nova-3

deepgram/nova-3

Transcription

Released Jul 15, 2026

Deepgram Nova-3 general-purpose speech-to-text model with monolingual and multilingual transcription support.

Specifications

Input: wav, mp3, flac, m4a, ogg, webm, aac, opus · base64 JSON, multipart file or URL · up to 25 MB
Output: text; verbose_json adds language, duration, segments and word timestamps
Billing: per second of audio

Use it

POST /api/v1/audio/transcriptions · MCP transcribe · full reference

curl https://omnirail.org/api/v1/audio/transcriptions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" \
  -F model=deepgram/nova-3 \
  -F file=@meeting.mp3