GPT-6 Luna (Medium) vs Mistral Large 3
Which is better for the money: GPT-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 2026-10-24.
Clear winner
Verdict
Pick GPT-6 Luna (Medium)
Mistral Large 3 vs GPT-6 Luna (Medium): 68.9% less intelligence, 48.9% more cost to run the AA benchmark, and 13.0% faster end-to-end.
| Metric | GPT-6 Luna (Medium) | Mistral Large 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.9 | 9.3 | −68.9% Mistral Large 3 is 68.9% less intelligent |
| Total AA cost (lower is better) | $31.17 | $46.41 | +48.9% Mistral Large 3 is 48.9% more expensive |
| End-to-end time (lower is better) | 8.25s | 7.18s | −13.0% Mistral Large 3 is 13.0% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.50 / $1.50 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Medium) 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 (Medium)Mistral Large 3Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-luna-medium/mistral-large-3 · Markdown: /api/v1/compare/gpt-6-luna-medium/mistral-large-3?format=md · llms.txt · agent skill