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

google/gemini-3.1-flash-image-preview

ReasoningJSONVisionImage out
Use via OpenRouter ↗
Intelligence
Design Elo
1304
image
Speed
143
29th fastest
Latency
9.8s
first token
Input price
$0.500
161st cheapest
Context
131K
66K max out

How it compares

Faster than91%
of all ranked models
Cheaper than46%
of all ranked models

Overview

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...

Benchmarks

independent · via OpenRouter
Design Arena · Elo45,492 tournaments
image
1296
graphicdesign
1283
logo
1267

Providers & pricing (2)

ProviderIn $/MOut $/MUptime
Google AI Studio$0.500$3.0099.6%
Google$0.500$3.0099.9%

Specifications

Context window131K
Max output66K
Knowledge cutoff
Input modalitiesimage, text
Output modalitiesimage, text
Prompt caching
Cache read price
ModeratedNo

Nano Banana 2 (Gemini 3.1 Flash Image Preview) FAQ

How much does Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost?

Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs $0.500 per million input tokens and $3.00 per million output tokens via OpenRouter, making it 161st cheapest of 298 paid models.

How fast is Nano Banana 2 (Gemini 3.1 Flash Image Preview)?

Nano Banana 2 (Gemini 3.1 Flash Image Preview) generates around 143 tokens per second with 9.8s time-to-first-token (p50), the 29th fastest tracked model.

What is Nano Banana 2 (Gemini 3.1 Flash Image Preview)'s context window?

Nano Banana 2 (Gemini 3.1 Flash Image Preview) supports a 131K-token context window and can output up to 66K tokens. It accepts image, text input.

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