Nano Banana Pro (Gemini 3 Pro Image) vs Kimi K3.1 Pro
Price, context window & benchmark comparison
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Verdict: Kimi K3.1 Pro is 11% cheaper than Nano Banana Pro (Gemini 3 Pro Image) on a typical 3:1 input/output mix. Kimi K3.1 Pro has the larger context window (1M vs 131K).
| Nano Banana Pro (Gemini 3 Pro Image) | Kimi K3.1 Pro | |
|---|---|---|
| Input price / 1M | $2.00 | $2.00 |
| Output price / 1M | $12.00 | $10.00 |
| Blended price (3:1) | $4.50 | $4.00 |
| Cached input / 1M | $0.20 | $0.20 |
| Context window | 131K | 1M |
| Max output | 33K | 944K |
| Intelligence index | — | 46.5 |
| Coding index | — | — |
| Providers | — | 23 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-06-18 | 2026-10-23 |
| Retirement | — | — |
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FAQ
Which is cheaper, Nano Banana Pro (Gemini 3 Pro Image) or Kimi K3.1 Pro?
Kimi K3.1 Pro is 11% cheaper than Nano Banana Pro (Gemini 3 Pro Image) on a typical 3:1 input/output mix.
Nano Banana Pro (Gemini 3 Pro Image) vs Kimi K3.1 Pro: which has a bigger context window?
Nano Banana Pro (Gemini 3 Pro Image): 131,072 tokens. Kimi K3.1 Pro: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Nano Banana Pro (Gemini 3 Pro Image) ≈ $10,000, Kimi K3.1 Pro ≈ $9,000.
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