GPT-5.3-Codex vs Mistral Large 4
Price, context window & benchmark comparison
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Verdict: Mistral Large 4 is 4.6× cheaper than GPT-5.3-Codex on a typical 3:1 input/output mix. Mistral Large 4 has the larger context window (1M vs 400K).
| GPT-5.3-Codex | Mistral Large 4 | |
|---|---|---|
| Input price / 1M | $1.75 | $0.70 |
| Output price / 1M | $14.00 | $2.10 |
| Blended price (3:1) | $4.81 | $1.05 |
| Cached input / 1M | $0.17 | $0.07 |
| Context window | 400K | 1M |
| Max output | 128K | 262K |
| Intelligence index | — | 26.1 |
| Coding index | — | — |
| Providers | — | 2 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-02-24 | 2026-10-06 |
| Retirement | — | — |
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FAQ
Which is cheaper, GPT-5.3-Codex or Mistral Large 4?
Mistral Large 4 is 4.6× cheaper than GPT-5.3-Codex on a typical 3:1 input/output mix.
GPT-5.3-Codex vs Mistral Large 4: which has a bigger context window?
GPT-5.3-Codex: 400,000 tokens. Mistral Large 4: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-5.3-Codex ≈ $10,500, Mistral Large 4 ≈ $2,450.
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