GPT-6 Astra (High) vs Mistral Large 3
Which is better for the money: GPT-6 Astra (High) 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 Astra (High) scores 41.6 points higher (50.9 vs 9.3) but costs 63× as much to run the benchmark ($2925 vs $46.4; flagship vs budget cost classes). They are not alternatives at one budget: pick GPT-6 Astra (High) when you need intelligence above 9.3, and Mistral Large 3 when 9.3 is enough.
| Metric | GPT-6 Astra (High) | Mistral Large 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 50.9 | 9.3 | −81.7% Mistral Large 3 is 81.7% less intelligent |
| Total AA cost (lower is better) | $2,925.01 | $46.41 | −98.4% Mistral Large 3 is 98.4% cheaper |
| End-to-end time (lower is better) | 45.44s | 7.18s | −84.2% Mistral Large 3 is 84.2% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $0.50 / $1.50 | |
| Input modalities | Text, Image | Text, Image |
Mistral Large 3 vs GPT-6 Astra (High): 81.7% less intelligence, 98.4% less cost to run the AA benchmark, and 84.2% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- 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 Astra (High)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-astra-high/mistral-large-3 · Markdown: /api/v1/compare/gpt-6-astra-high/mistral-large-3?format=md · llms.txt · agent skill