Nano Banana 2 (Gemini 3.1 Flash Image Preview) API Cost Calculator
Estimate your monthly API costs for Nano Banana 2 (Gemini 3.1 Flash Image Preview) from Google.
Pricing per 1M tokens
Pricing last verified: Mar 21, 2026
30-Day Price History
Solid line: input price · Dashed line: output price
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Cost Breakdown
Compare with Similar Models
| Model | Input/1M | Output/1M |
|---|---|---|
| Gemini 2.5 Computer Use Preview 10 2025 Google | $1.25 | $2.50 |
| Gemini 2.5 Pro Google | $1.25 | $2.50 |
| Nano Banana (Gemini 2.5 Flash Image) Google | $0.3000 | $2.50 |
| Gemini 3.1 Flash Lite Preview Google | $0.2500 | $1.50 |
| Gemini 3 Flash Preview Google | $0.5000 | $1.00 |
Frequently Asked Questions
How much does Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost per token?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is priced at $0.5000 per 1M input tokens and $3.00 per 1M output tokens. Use the calculator above to estimate your monthly costs based on your usage volume.
What is the context window for Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) has a context window of 65.5K tokens (65,536 tokens). The maximum output length is 65.5K tokens.
Does Nano Banana 2 (Gemini 3.1 Flash Image Preview) support image inputs (vision)?
Yes, Nano Banana 2 (Gemini 3.1 Flash Image Preview) supports vision/image inputs. You can send images as part of your prompts.
How does Nano Banana 2 (Gemini 3.1 Flash Image Preview) compare to similar models?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs $0.5000 input and $3.00 output per 1M tokens. Gemini 3 Flash Preview is less expensive at $0.5000 input and $1.00 output per 1M tokens. See the "Compare with Similar Models" table above, or visit the Gemini 3 Flash Preview page at /tools/cost-calculator/google/gemini-3-flash-preview.