# Nano Banana 2 spotted on models.dev

Nano Banana 2 is a model from Google, released on 28 May 2026. First seen 21 Sep 2026. Catalogues list a 131,072 tokens context window. 6 evidence links.

- Kind: Sighting
- Developer: Google
- Confidence: Confirmed
- First seen: 2026-09-21T15:29:15.837Z
- Model: [Nano Banana 2](https://alexgetman.com/models/google/gemini-3-1-flash-image/)
- Canonical: https://alexgetman.com/signals/2026/09/21/gemini-3-1-flash-image/
- Input · USD / 1M tokens: $0.50 (text/image)
- Output · USD / 1M tokens: $60.00 (images); $3.00 (text and thinking)

## Evidence links

- [models.dev · catalogue](https://models.dev/#gemini-3.1-flash-image)
- [OpenCode · discovery](https://opencode.ai/data/google/gemini-3-1-flash-image)
- [Gemini · deprecations](https://ai.google.dev/gemini-api/docs/deprecations?hl=en)
- [Gemini · pricing](https://aistudio.google.com/docs/pricing)
- [Gemini · pricing](https://ai.google.dev/gemini-api/docs/pricing)
- [Arena · leaderboards](http://aistudio.google.com/prompts/new_chat?model=gemini-3.1-flash-image)