GPT-5.1-Codex vs Qwen3.8 Max (0902)
Price, context window & benchmark comparison
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Verdict: Qwen3.8 Max (0902) is 13% cheaper than GPT-5.1-Codex on a typical 3:1 input/output mix. Qwen3.8 Max (0902) has the larger context window (1M vs 400K).
| GPT-5.1-Codex | Qwen3.8 Max (0902) | |
|---|---|---|
| Input price / 1M | $1.25 | $2.00 |
| Output price / 1M | $10.00 | $6.00 |
| Blended price (3:1) | $3.44 | $3.00 |
| Cached input / 1M | $0.13 | $0.25 |
| Context window | 400K | 1M |
| Max output | 128K | 131K |
| Intelligence index | — | 45.4 |
| Coding index | — | 76.2 |
| Providers | — | 1 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2025-11-13 | 2026-09-03 |
| Retirement | — | — |
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FAQ
Which is cheaper, GPT-5.1-Codex or Qwen3.8 Max (0902)?
Qwen3.8 Max (0902) is 13% cheaper than GPT-5.1-Codex on a typical 3:1 input/output mix.
GPT-5.1-Codex vs Qwen3.8 Max (0902): which has a bigger context window?
GPT-5.1-Codex: 400,000 tokens. Qwen3.8 Max (0902): 1,000,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-5.1-Codex ≈ $7,500, Qwen3.8 Max (0902) ≈ $7,000.
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