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Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) API Pricing
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs $0.500 per 1M input tokens and $3.00 per 1M output tokens. Context window: 66K. Prices verified 2026-08-23 · source
Input / 1M tokens
$0.500
Output / 1M tokens
$3.00
Context window
66K
Max output
66K
What would Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $16.00 |
| Coding agent | 5,000 | 8,000 / 2,000 | $50.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $105.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $26.00 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...
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Official resources
- Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) on OpenRouter — live endpoint, pricing source of record.
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