Nano Banana 2 (Gemini 3.1 Flash Image) vs Kimi K3
Price, context window & benchmark comparison
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Verdict: Nano Banana 2 (Gemini 3.1 Flash Image) is 5.3× cheaper than Kimi K3 on a typical 3:1 input/output mix. Kimi K3 has the larger context window (1M vs 131K).
| Nano Banana 2 (Gemini 3.1 Flash Image) | Kimi K3 | |
|---|---|---|
| Input price / 1M | $0.50 | $3.00 |
| Output price / 1M | $3.00 | $15.00 |
| Blended price (3:1) | $1.13 | $6.00 |
| Cached input / 1M | — | $0.30 |
| Context window | 131K | 1M |
| Max output | 33K | 944K |
| Intelligence index | — | 43.6 |
| Coding index | — | 76.2 |
| Providers | 2 | 20 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | No | Yes |
| Released | 2026-06-18 | 2026-07-16 |
| Retirement | — | — |
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FAQ
Which is cheaper, Nano Banana 2 (Gemini 3.1 Flash Image) or Kimi K3?
Nano Banana 2 (Gemini 3.1 Flash Image) is 5.3× cheaper than Kimi K3 on a typical 3:1 input/output mix.
Nano Banana 2 (Gemini 3.1 Flash Image) vs Kimi K3: which has a bigger context window?
Nano Banana 2 (Gemini 3.1 Flash Image): 131,072 tokens. Kimi K3: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Nano Banana 2 (Gemini 3.1 Flash Image) ≈ $2,500, Kimi K3 ≈ $13,500.
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