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

google/gemini-3.1-flash-image-preview

Released Feb 26, 202665,536 context$0.50/M input tokens$3/M output tokens

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 advanced contextual understanding with fast, cost-efficient inference, making complex image generation and iterative edits significantly more accessible. Aspect ratios can be controlled with the image_config API Parameter

Recent activity on Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Total usage per day on OpenRouter

Image Inputs
341K
Image Outputs
240K

Image inputs count visual attachments processed in prompts. Image outputs count generated images. Some requests may process or generate multiple images.