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NVIDIA · Transcription model

Nemotron 3.5 Transcribe

nvidia/nemotron-3.5-transcribe
  • Transcription
Released Oct 29, 2026

Nemotron 3.5 Transcribe is an open-weight speech recognition model from NVIDIA, a 30B mixture-of-experts with about 4B active parameters. It transcribes recordings of up to one hour in 40 languages,...

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=nvidia/nemotron-3.5-transcribe \
  -F file=@meeting.mp3