model determines which audio formats are accepted, what language values are valid, and what response fields are available.
openai/whisper-large-v3-turbo
Default model. Multilingual. Auto-detected if language omitted. See Whisper docs for the full language list. Returns text only — no timestamps regardless of response_format.
openai/whisper-tiny
Lightweight, lowest resource usage. Multilingual (50+ languages, auto-detected). Returns text only — no timestamps.
deepgram/nova-3
Highest accuracy for English. Advanced features (diarization, word timestamps, smart formatting, numerals, punctuation) available via model_config. Defaults language to en if omitted. Can also set language inside model_config — top-level field takes precedence. See Deepgram language docs for details.