Google
Nano Banana 2 (Gemini 3.1 Flash Image) API pricing
Nano Banana 2 (Gemini 3.1 Flash Image) is Google’s model on the API market, released 18 Jun 2026. Prices are per million tokens in USD, as last read from the price list.
$0.50Input / 1M
$3.00Output / 1M
131KContext
33KMax output
Specification
USD per million tokens- Provider
- Model id
google/gemini-3.1-flash-image- Input
- $0.50
- Output
- $3.00
- Cached input
- Not published
- Context window
- 131K tokens
- Maximum output
- 33K tokens
- Takes
- image, text
- Returns
- image, text
- Tool use
- Not reported
- Reasoning
- Yes
- Released
- 18 Jun 2026
- First tracked
- 17 Sept 2026
At $0.50 per million input tokens, Nano Banana 2 (Gemini 3.1 Flash Image) is dearer than 172 of the 326 models on the price list.
Price changes
Tracked since 17 Sept 2026No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.
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Prices and specifications come from OpenRouter’s catalogue, last read 17 Sept 2026. A provider’s own price may differ; how this is collected.