GPT-5.6 Luna (Xhigh) vs Mistral Large 4 Preview
Which is better for the money: GPT-5.6 Luna (Xhigh) 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 3.8 points higher (38.4 vs 34.6) but costs 11× as much to run the benchmark ($2003 vs $179; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Mistral Large 4 Preview when you need intelligence above 34.6, and GPT-5.6 Luna (Xhigh) when 34.6 is enough.
| Metric | GPT-5.6 Luna (Xhigh) | Mistral Large 4 Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 38.4 | +11.0% Mistral Large 4 Previ… is 11.0% more intelligent |
| Total AA cost (lower is better) | $179.33 | $2,003.06 | +1017.0% Mistral Large 4 Previ… is 11× more expensive |
| End-to-end time (lower is better) | 45.80s | 23.34s | −49.0% Mistral Large 4 Previ… is 49.0% faster |
| 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 (Xhigh): 11.0% more intelligence, 1017.0% more cost to run the AA benchmark, and 49.0% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Terra (Medium) scores 41.30 for $175.
- 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 (Xhigh)Mistral Large 4 PreviewToday's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-luna-xhigh/mistral-large-4 · Markdown: /api/v1/compare/gpt-5-6-luna-xhigh/mistral-large-4?format=md · llms.txt · agent skill