Nano Banana 2.1 vs GPT-5.1-Codex-Mini
Price, context window & benchmark comparison
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Verdict: GPT-5.1-Codex-Mini is 4.4× cheaper than Nano Banana 2.1 on a typical 3:1 input/output mix. GPT-5.1-Codex-Mini has the larger context window (400K vs 66K).
| Nano Banana 2.1 | GPT-5.1-Codex-Mini | |
|---|---|---|
| Input price / 1M | $1.50 | $0.25 |
| Output price / 1M | $7.50 | $2.00 |
| Blended price (3:1) | $3.00 | $0.69 |
| Cached input / 1M | — | $0.03 |
| Context window | 66K | 400K |
| Max output | 59K | 128K |
| Intelligence index | — | — |
| Coding index | — | — |
| Providers | 1 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-10-06 | 2025-11-13 |
| Retirement | — | — |
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FAQ
Which is cheaper, Nano Banana 2.1 or GPT-5.1-Codex-Mini?
GPT-5.1-Codex-Mini is 4.4× cheaper than Nano Banana 2.1 on a typical 3:1 input/output mix.
Nano Banana 2.1 vs GPT-5.1-Codex-Mini: which has a bigger context window?
Nano Banana 2.1: 65,536 tokens. GPT-5.1-Codex-Mini: 400,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Nano Banana 2.1 ≈ $6,750, GPT-5.1-Codex-Mini ≈ $1,500.
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