Gemini 3.1 Flash Image (Nano Banana 2) 🍌 pricing

Gemini 3.1 Flash Image (Nano Banana 2) 🍌 from Google costs $0.500 per 1M input tokens and $3.00 per 1M output tokens. Context window 131,072 tokens.

API id gemini-3.1-flash-image · Google · source · updated 2026-08-11

$0.500
Input / 1M tokens
$3.00
Output / 1M tokens
—
Cached input / 1M
131K
Context window

What Gemini 3.1 Flash Image (Nano Banana 2) 🍌 costs in practice

Estimated cost at common usage volumes
WorkloadInput tokensOutput tokensEstimated cost
Short chat turn1,000500$0.0020
Document summary50,0002,000$0.03
1M tokens in, 200K out1,000,000200,000$1.10

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does Gemini 3.1 Flash Image (Nano Banana 2) 🍌 cost per 1M tokens?
Gemini 3.1 Flash Image (Nano Banana 2) 🍌 costs $0.500 per 1M input tokens and $3.00 per 1M output tokens on the standard tier.
What is Gemini 3.1 Flash Image (Nano Banana 2) 🍌's context window?
Gemini 3.1 Flash Image (Nano Banana 2) 🍌 accepts up to 131,072 tokens in a single request, and can return up to 32,768 output tokens.
Is there a cheaper Gemini model than Gemini 3.1 Flash Image (Nano Banana 2) 🍌?
Yes. Gemini Embedding is $0.150 per 1M input tokens versus $0.500 for Gemini 3.1 Flash Image (Nano Banana 2) 🍌.
Where does this Gemini 3.1 Flash Image (Nano Banana 2) 🍌 price come from?
Directly from Google's published pricing page, re-read every day and normalized to USD per 1,000,000 tokens.

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