Gemini 3.1 Flash TTS (preview)
Speech and audio
gemini-3.1-flash-tts-preview
$1 in, $20 out per 1M tokens
Gemini 3.1 Flash Live (preview)
Model idgemini-3.1-flash-live-preview
Price$0.75 in, $4.50 out per 1M tokens
Checked29 September 2026
Where it stands
62newer speech and audio models since its release
- NVIDIA Nemotron 3.5 Transcribe (30B-A4B)28 Oct 2026
- Hy-SimulMT-30B-A3B22 Oct 2026
- Eleven Realtime v1 Max / Mini20 Oct 2026
- Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3)20 Oct 2026
- Voxtral Small Transcribe 320 Oct 2026
The 5 newest are listed. All speech and audio models
- Before it from Google
- Chirp 3 Transcription (Google Cloud Speech-to-Text)13 Oct 2025
- After it from Google
- Gemini 3.1 Flash TTS (preview)15 Apr 2026
- Weights
- Closed weights; access is hosted only.
How to call it
Where to use Gemini 3.1 Flash Live (preview), with its model id.
| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Gemini Live API (WebSocket) | gemini-3.1-flash-live-preview |
ai.google.dev |
Pricing
| Input | $0.75 per 1M tokens |
|---|---|
| Output | $4.50 per 1M tokens |
| Audio input | $3 per 1M tokens |
| Audio output | $12 per 1M tokens |
As published: “per 1M tokens (USD); same price as gemini-3.8-live”.
Source: ai.google.dev, checked 29 September 2026.
Specs
- Input
- Text, audio, images and video
- Output
- Text and audio
- Context window
- Not published
- Max output
- Not published
- Open weights
- No
- Licence
- Proprietary
- Released
- 26 March 2026
- Status
- Legacy
- Type
- Speech and audio
What stands out
What its maker marketed at launch, and what people found later, each with its source.
Audio-to-audio real-time dialogue
Native audio model ‘designed for real-time dialogue and voice-first AI applications’ on the Live API.