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

The Google Nano Banana 2 (Gemini 3.1 Flash Image Preview) is an AI model capable of handling both text and image inputs within a context length of 65,536 tokens. It supports reasoning but does not provide structured output or integration with external tools. While it offers flexibility in input modalities, its performance metrics are currently unverified; no independent benchmarks have been published to date. Given its pricing at $0.5 per million input tokens and $3.0 per million output tokens, the Nano Banana 2 is suitable for users requiring text and image processing capabilities who can afford higher costs. Its current lack of benchmark coverage means its performance relative to other models remains uncertain, but it might be a viable choice for those prioritizing specific modalities over cost-efficiency or benchmarked benchmarks.

Quality Score
84/100
price + capability + benchmarks
Input Price
$0.50
per 1M tokens
Output Price
$3.00
per 1M tokens
Context Window
131,072
tokens
Model ID
google/gemini-3.1-flash-image-preview
Vendor
google
Released
February 2026
Tokenizer
Gemini
Input Modalities
image, text
Output Modalities
image, text
Max Output
65,536 tokens
Tool Calling
not supported
Structured Output
✓ supported
Reasoning Mode
✓ supported
Vision
✓ accepts images
Audio
no
Moderated
no

What it costs in practice

Computed from the current $0.50/M input and $3.00/M output rates. Run your own numbers →

JobTokensCost
Summarize a 50-page report 30k in / 1.5k out $0.02
Classify 1,000 customer emails 500k in / 50k out $0.40
A month of a busy support chatbot 5M in / 2M out $8.50

Price & spec history

Tracked daily by PicksByModel since 2026-07-17.

DateInput /MOutput /MContext
2026-07-27 $0.50 $3.00 131,072
2026-07-27 $0.50 $3.00 65,536
2026-07-17 $0.50 $3.00 131,072

Category rankings

Where Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) places across the 1 category it ranks in. How we rank →

#CategoryScore
#6 Image GenerationVision · of 9 ranked 99

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Quick answers

How much does Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost?
$0.50 per million input tokens and $3.00 per million output tokens.
What is Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)'s context window?
131,072 tokens, roughly 196 pages of text in a single request.
Does Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) support tool calling?
It supports structured output, a reasoning mode.
Can Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) process images?
Yes, it accepts image input.