GPT-6 Luna (Xhigh) vs Mistral Large 3
Which is better for the money: GPT-6 Luna (Xhigh) by OpenAI or Mistral Large 3 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
GPT-6 Luna (Xhigh) scores 25.3 points higher (34.6 vs 9.3) but costs 1.4× as much to run the benchmark ($66.8 vs $46.4; mid-range vs budget cost classes). Pick GPT-6 Luna (Xhigh) when the extra intelligence is worth the premium, otherwise Mistral Large 3.
| Metric | GPT-6 Luna (Xhigh) | Mistral Large 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 9.3 | −73.1% Mistral Large 3 is 73.1% less intelligent |
| Total AA cost (lower is better) | $66.81 | $46.41 | −30.5% Mistral Large 3 is 30.5% cheaper |
| End-to-end time (lower is better) | 21.27s | 7.18s | −66.2% Mistral Large 3 is 66.2% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.50 / $1.50 | |
| Input modalities | Text, Image | Text, Image |
Mistral Large 3 vs GPT-6 Luna (Xhigh): 73.1% less intelligence, 30.5% less cost to run the AA benchmark, and 66.2% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
- Mistral Large 3 is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
GPT-6 Luna (Xhigh)Mistral Large 3Today's Pareto frontierOpen-weights 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-xhigh/mistral-large-3 · Markdown: /api/v1/compare/gpt-6-luna-xhigh/mistral-large-3?format=md · llms.txt · agent skill