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Gemini 3.1 Pro vs Nano Banana 2 (Gemini 3.1 Flash Image)
List-price comparison · Gemini 3.1 Pro details · Nano Banana 2 (Gemini 3.1 Flash Image) details
For a typical workload (100,000 requests / mo), Nano Banana 2 (Gemini 3.1 Flash Image) costs 75% less — $180.00/mo vs $720.00/mo.
| Gemini 3.1 Pro | Nano Banana 2 (Gemini 3.1 Flash Image) | |
|---|---|---|
| Input / 1M tokens | $2.00 | $0.500 |
| Output / 1M tokens | $12.00 | $3.00 |
| Typical request (1,200 in + 400 out) | $0.0072 | $0.0018 |
| Context window | 1,048,576 tokens | 131,072 tokens |
| Max output | 65,536 tokens | 65,536 tokens |
| Tier | Flagship | Flash |
| Provider |
Projected monthly cost
1,000 requests / month$7.20 vs $1.8010,000 requests / month$72.00 vs $18.00100,000 requests / month$720.00 vs $180.00
Rows open both models in the calculator — adjust volume and token counts there.
Gemini 3.1 Pro
Native audio, video, and document understanding with a ~1M token context window — strong fit for multi-modal RAG and large-document analysis.
Output token cost is steep relative to input, and the largest context windows can be slow to fill — chunk large documents where possible.
Nano Banana 2 (Gemini 3.1 Flash Image)
Auto-synced from OpenRouter — no editorial write-up yet.
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Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.