As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/gemini-3-1-flash-live/

# Gemini 3.1 Flash Live (preview)

Google DeepMind, Gemini 3.1 family. Status: legacy. Type: speech and audio. Released: 2026-03-26.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Gemini Live API (WebSocket) | `gemini-3.1-flash-live-preview` |  | https://ai.google.dev/gemini-api/docs/models |

## 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
- Unit as published: per 1M tokens (USD); same price as gemini-3.8-live
- Source: https://ai.google.dev/gemini-api/docs/pricing
- Last checked: 2026-09-29

## Specs

- Input: text, audio, image, video
- Output: text, audio
- Context window: not published
- Max output: not published
- Open weights: no
- Licence: proprietary

## Where it stands

- Newer speech and audio models in the registry since its release: 62. The 5 newest:
  - NVIDIA Nemotron 3.5 Transcribe (30B-A4B) (2026-10-28) https://postcutoff.com/m/nemotron-3-5-transcribe/
  - Hy-SimulMT-30B-A3B (2026-10-22) https://postcutoff.com/m/hy-simulmt-30b-a3b/
  - Eleven Realtime v1 Max / Mini (2026-10-20) https://postcutoff.com/m/eleven-realtime-v1-max/
  - Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3) (2026-10-20) https://postcutoff.com/m/voxtral-mini-transcribe-3/
  - Voxtral Small Transcribe 3 (2026-10-20) https://postcutoff.com/m/voxtral-small-transcribe-3/
- Before it from Google: Chirp 3 Transcription (Google Cloud Speech-to-Text) (2025-10-13) https://postcutoff.com/m/chirp-3/
- After it from Google: Gemini 3.1 Flash TTS (preview) (2026-04-15) https://postcutoff.com/m/gemini-3-1-flash-tts/
- Closed weights; access is hosted only.

## What stands out

- Audio-to-audio real-time dialogue: Native audio model 'designed for real-time dialogue and voice-first AI applications' on the Live API. Source: https://ai.google.dev/gemini-api/docs/changelog

## Notes

Preview id; the models page labels it legacy and recommends gemini-3.8-live (GA 2026-09-15). No shutdown date announced as of 2026-09-29. Context window not re-checked.

Sources: [models](https://ai.google.dev/gemini-api/docs/models), [changelog](https://ai.google.dev/gemini-api/docs/changelog), [pricing](https://ai.google.dev/gemini-api/docs/pricing).

Model page: https://postcutoff.com/m/gemini-3-1-flash-live/