GPT-5.6 Luna (Low) vs Mistral Large 4 Preview
Which is better for the money: GPT-5.6 Luna (Low) by OpenAI or Mistral Large 4 Preview by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Mistral Large 4 Preview scores 17.4 points higher (38.4 vs 21.0) but costs 60× as much to run the benchmark ($1608 vs $27.0; premium vs budget cost classes). They are not alternatives at one budget: pick Mistral Large 4 Preview when you need intelligence above 21.0, and GPT-5.6 Luna (Low) when 21.0 is enough.
| Metric | GPT-5.6 Luna (Low) | Mistral Large 4 Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.0 | 38.4 | +82.9% Mistral Large 4 Previ… is 82.9% more intelligent |
| Total AA cost (lower is better) | $27.02 | $1,607.86 | +5850.6% Mistral Large 4 Previ… is 60× more expensive |
| End-to-end time (lower is better) | 5.84s | 24.07s | +312.2% Mistral Large 4 Previ… is 312.2% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $1.36 / $4.18 | |
| Input modalities | Text, Image | Text, Image |
Mistral Large 4 Preview vs GPT-5.6 Luna (Low): 82.9% more intelligence, 5850.6% more cost to run the AA benchmark, and 312.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
- Mistral Large 4 Preview is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.6 Luna (Low)Mistral Large 4 PreviewToday's Pareto frontierEvery other model
Matchup
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