GPT-5.6 Luna (Medium) vs Mistral Large 3
Which is better for the money: GPT-5.6 Luna (Medium) by OpenAI or Mistral Large 3 by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick GPT-5.6 Luna (Medium)
Mistral Large 3 vs GPT-5.6 Luna (Medium): 62.8% less intelligence, 4.7% more cost to run the AA benchmark, and 18.3% slower end-to-end.
| Metric | GPT-5.6 Luna (Medium) | Mistral Large 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 25.0 | 9.3 | −62.8% Mistral Large 3 is 62.8% less intelligent |
| Total AA cost (lower is better) | $44.32 | $46.41 | +4.7% Mistral Large 3 is 4.7% more expensive |
| End-to-end time (lower is better) | 6.11s | 7.23s | +18.3% Mistral Large 3 is 18.3% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.50 / $1.50 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Medium) is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
- Mistral Large 3 is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
GPT-5.6 Luna (Medium)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-5-6-luna-medium/mistral-large-3 · Markdown: /api/v1/compare/gpt-5-6-luna-medium/mistral-large-3?format=md · llms.txt · agent skill