GPT-6 Luna (Medium) vs Mistral Large 4 Preview
Which is better for the money: GPT-6 Luna (Medium) by OpenAI or Mistral Large 4 Preview by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Mistral Large 4 Preview scores 8.5 points higher (38.4 vs 29.9) but costs 52× as much to run the benchmark ($1608 vs $31.2; premium vs budget cost classes). They are not alternatives at one budget: pick Mistral Large 4 Preview when you need intelligence above 29.9, and GPT-6 Luna (Medium) when 29.9 is enough.
| Metric | GPT-6 Luna (Medium) | Mistral Large 4 Preview | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.9 | 38.4 | +28.4% Mistral Large 4 Previ… is 28.4% more intelligent |
| Total AA cost (lower is better) | $31.17 | $1,607.86 | +5058.4% Mistral Large 4 Previ… is 52× more expensive |
| End-to-end time (lower is better) | 8.25s | 27.12s | +228.7% Mistral Large 4 Previ… is 228.7% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $1.36 / $4.18 | |
| Input modalities | Text, Image | Text, Image |
Mistral Large 4 Preview vs GPT-6 Luna (Medium): 28.4% more intelligence, 5058.4% more cost to run the AA benchmark, and 228.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Medium) is on today's frontier: nothing is both smarter and cheaper.
- 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-6 Luna (Medium)Mistral Large 4 PreviewToday's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-luna-medium/mistral-large-4 · Markdown: /api/v1/compare/gpt-6-luna-medium/mistral-large-4?format=md · llms.txt · agent skill