GPT-6 Luna vs Mistral Large 4
Price, context window & benchmark comparison
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Verdict: GPT-6 Luna is 5.2× cheaper than Mistral Large 4 on a typical 3:1 input/output mix. GPT-6 Luna scores higher on the Artificial Analysis Intelligence Index (27.8 vs 26). GPT-6 Luna has the larger context window (1.1M vs 1M).
| GPT-6 Luna | Mistral Large 4 | |
|---|---|---|
| Input price / 1M | $0.10 | $0.70 |
| Output price / 1M | $0.50 | $2.10 |
| Blended price (3:1) | $0.20 | $1.05 |
| Cached input / 1M | $0.01 | $0.07 |
| Context window | 1.1M | 1M |
| Max output | 128K | 262K |
| Intelligence index | 27.8 | 26 |
| Coding index | — | — |
| Providers | 7 | 3 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-09-22 | 2026-10-06 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GPT-6 Luna or Mistral Large 4?
GPT-6 Luna is 5.2× cheaper than Mistral Large 4 on a typical 3:1 input/output mix.
GPT-6 Luna vs Mistral Large 4: which has a bigger context window?
GPT-6 Luna: 1,050,000 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-6 Luna ≈ $450.00, Mistral Large 4 ≈ $2,450.
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