Context Window
GooglefastVision

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 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](https://openrouter.ai/docs/features/multimodal/image-generation#image-aspect-ratio-c

66K context·~49K words·66K max output
View context detailsCompare with Gemma 7b It
Context window66Ktokens
Max output66Ktokens

Context window

This model accepts 66K tokens in one request (~49K words of text).

Context window size66K tokens
4K32K128K1M10M

What fits in one request

  • Short document
    About 1,500 words of text
    Fits
  • Long document
    About 37K words of text
    Fits
  • Small codebase
    About 150K words of text
    Won't fit
  • Full novel
    About 375K words of text
    Won't fit

Specifications

Context size, pricing, and release info in one place.

Context window
65,536 tokens (66K)
Max output tokens
65,536 tokens (66K)
Speed tier
fast
Provider
Google
Release date
Feb 2026

Capabilities

See which features this model supports, such as vision, tools, and streaming.

Supported (3)
Vision
Supported
Extended thinking
Supported
Streaming
Supported
Not supported (5)
Tool use
Not supported
Function calling
Not supported
Web search
Not supported
Batch API
Not supported
Prompt caching
Not supported

Best for

Jump to a guide or ranking that matches each workload.

ReasoningMultimodalChatbots

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Frequently asked questions

Short answers about context size and how this model behaves.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) has a context window of 65K tokens (65,536 tokens). This is sufficient for most chat, summarization, and moderate document tasks.

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