Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Gemini 3.1 Flash Image (Nano Banana 2) is optimized for image understanding and generation and offers a balance of price and performance.
text + image → text + image · made by Google
Sold by 5 ways
| Seller | Lane | Rate |
|---|---|---|
| Google Vertex AI cloud | batch | $0.25per Mtok in$1.5per Mtok outraw.githubusercontent.com · read 2026-11-01 |
| Google Vertex AI cloud | standard | $0.5per Mtok in$3per Mtok out$0.067per image$0.00056per image in$0.05per Mtok cachedraw.githubusercontent.com · read 2026-11-01 |
| OpenRouter 2 ways | $0.5per Mtok in$3per Mtok out | |
| OpenRouter aggregator | standard | $0.5per Mtok in$3per Mtok outopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | google-ai-studio | $0.5per Mtok in$3per Mtok outopenrouter.ai · read 2026-11-01 |
| Vercel AI Gateway aggregator | standard | $0.5per Mtok in$3per Mtok out$0.05per Mtok cachedai-gateway.vercel.sh · read 2026-08-25 |
Measured 3 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 1stof 5 | Design Arena · graphicdesign (models) | Elo | 1261 |
| 1stof 5 | Design Arena · image (models) | Elo | 1274 |
| 1stof 5 | Design Arena · logo (models) | Elo | 1263 |
About
Nano Banana 2 (Gemini 3.1 Flash Image Preview) — a text and images model from Google, sold by 3 companies from $0.5 in and $3 out per million tokens, placed 1st of 5 on Design Arena · graphicdesign (models).
It takes text and images and returns text and images, with a context window of 131,072 tokens. It was published in February 2026, trained on material up to January 2025. Its sellers say it can reason step by step. The catalogue files it under image. Three companies sell it. The cheapest is $0.5 in and $3 out per million tokens at Google Vertex AI. Beside the standard rate there are batch and separately routed lanes. It has been measured on 3 boards, and stands best at 1st of 5 on Design Arena · graphicdesign (models).
Every current figure
- Maker
- Register
- model
- Takes
- text + image
- Returns
- text + image
- Context
- 131,072 tokens
- Longest answer
- 32,768 tokens
- Published
- February 2026
- Knowledge to
- January 2025
- Licence
- not read
- Sellers
- 3
- Maker's own price
- not read
- Price
- $0.5 in and $3 out per million tokens — Google Vertex AI
- Boards
- 3
- Best place
- 1st of 5 — Design Arena · graphicdesign (models)
Known as 1 name
google/gemini-3.1-flash-image-preview