Deepgram Flux (conversational STT, English + Multilingual)
'First' claims are Deepgram's own marketing (launched at VapiCon 2025-10-02 as 'world's first conversational speech recognition model'). Uses /v2/listen (not /v1). Mid-stream numeral toggle added 2026-09-25. Companion TTS: deepgram-flux-tts.
- Input
- audio
- Output
- text
- License
- proprietary
- Pricing
- per minute: $0.0065 (per minute streaming, pay-as-you-go (flux-general-en); Flux Multilingual $0.0078/min; Growth plan $0.0057 / $0.0068) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| Deepgram API | flux-general-en | wss://api.deepgram.com/v2/listen | docs |
| Deepgram API | flux-general-multi | wss://api.deepgram.com/v2/listen | docs |
Notable capabilities (2)
- FIRST Conversational speech recognition with model-native turn-taking: Recognition model itself decides end-of-turn using acoustic + semantic cues (~260 ms end-of-turn detection), with EagerEndOfTurn events to start the LLM early; tunable eot_threshold, eager_eot_threshold, eot_timeout_ms. source
- FIRST Multilingual conversational STT with in-call code-switching (found after launch): Flux Multilingual (GA 2026-04-29): English, Spanish, French, German, Hindi, Russian, Portuguese, Japanese, Italian, Dutch with automatic language switching mid-conversation; turn detection under 400 ms. Billed by Deepgram as the world's first multilingual conversational speech recognition model. source
STT built for voice agents: transcription + end-of-turn detection in one model.
Sources: https://developers.deepgram.com/docs/flux/quickstart , https://deepgram.com/pricing , https://developers.deepgram.com/changelog
Other Deepgram models
Deepgram Flux TTS · Deepgram Aura-2 · Deepgram Nova-3 (incl. Medical / Pharma)