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by Google DeepMind

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview).

multimodal closed 131K ctx
Cheapest input
$0.5/M
on OpenRouter
Cheapest output
$3.0/M
on OpenRouter
Fastest
64 tok/s
on OpenRouter
Hosted equiv.
~$1.08/hr
@ 100 tok/s on OpenRouter

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...

Hosted API only

No self-host path — closed weights.

Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)'s weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
OpenRouter api aggregator $0.5 $3.0 Launch ↗
Performance

Speed across providers.

Tokens/sec and time-to-first-token measured against the same prompt template on each provider's API.

Provider Tokens/sec TTFT Total
OpenRouter 64.0 1901 ms 2376 ms
FAQ

Frequently asked.

How do I run Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is available via OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
API pricing starts at $0.5/M input tokens and $3.0/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) open-source or proprietary?
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is a proprietary model from Google DeepMind. Access is API-only — there are no public weights to download.