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Gemini 3.1 Flash Image (Nano Banana 2) – Model Docs — Person.run

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Gemini 3.1 Flash Image (Nano Banana 2)

Gemini 3.1 Flash Image is optimized for image understanding and generation and offers a balance of price and performance.

Model overview

Model ID: google/gemini-3.1-flash-image
Provider: google
Type: language
Context window: 131,072 tokens
Max output tokens: 32,768

Tags: image-generation, implicit-caching, reasoning, vision, web-search

Model pricing

Metric	Value
`Input tokens (/1M)`	`$0.50`
`Output tokens (/1M)`	`$3.00`
`Image generation`	`n/a`
`Cached input read (/1M)`	`$0.05`
`Cached input write (/1M)`	`n/a`
`Pricing source`	`gateway`

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