Nano Banana 2 (Gemini 3.1 Flash Image Preview) pricing & benchmarks
Released Feb 26, 2026 · served by 1 provider
What Nano Banana 2 (Gemini 3.1 Flash Image Preview) is
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...
- Model ID:
google/gemini-3.1-flash-image-preview - Modality: text+image->text+image
- Tool calling: not supported · Structured output: supported
Providers and prices for Nano Banana 2 (Gemini 3.1 Flash Image Preview)
The same model costs different amounts depending on who serves it. Prices are per 1M tokens, cheapest first. Uptime and throughput are OpenRouter's rolling measurements, not vendor claims.
| Provider | Input | Output | Context | Quant | Uptime 24h | Throughput |
|---|---|---|---|---|---|---|
| Google AI Studiocheapest | $0.500 | $3.00 | 66K | — | 100.0% | — |
Nano Banana 2 (Gemini 3.1 Flash Image Preview) benchmark results
Design Arena head-to-head results, as reported through the OpenRouter model API.
| Category | Arena | Rank | Elo | Win rate |
|---|---|---|---|---|
| graphicdesign | models | #2 | 1287 | 66.3% |
| image | models | #2 | 1299 | 65.2% |
| logo | models | #2 | 1276 | 62.9% |
FAQ
How much does the Nano Banana 2 (Gemini 3.1 Flash Image Preview) API cost?
$0.500 per 1M input tokens and $3.00 per 1M output tokens. A typical workload of 1M input + 300K output tokens costs about $1.40.
Is Nano Banana 2 (Gemini 3.1 Flash Image Preview) free?
No. It is a paid model starting at $0.500 per 1M input tokens, though some providers offer trial credits.
Which provider is cheapest for Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Google AI Studio at $0.500 input / $3.00 output per 1M tokens.
Can I self-host Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
No. Nano Banana 2 (Gemini 3.1 Flash Image Preview) is closed-weight and only available through hosted APIs.