GPT-5.6 Terra (Medium) vs Mistral Small 3.1
Which is better for the money: GPT-5.6 Terra (Medium) by OpenAI or Mistral Small 3.1 by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Terra (Medium) scores 23.0 points higher (30.1 vs 7.1) but costs 16× as much to run the benchmark ($447 vs $27.8; mid-range vs budget cost classes). They are not alternatives at one budget: pick GPT-5.6 Terra (Medium) when you need intelligence above 7.1, and Mistral Small 3.1 when 7.1 is enough.
| Metric | GPT-5.6 Terra (Medium) | Mistral Small 3.1 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 30.1 | 7.1 | −76.4% Mistral Small 3.1 is 76.4% less intelligent |
| Total AA cost (lower is better) | $446.53 | $27.82 | −93.8% Mistral Small 3.1 is 93.8% cheaper |
| End-to-end time (lower is better) | 5.84s | 10.55s | +80.7% Mistral Small 3.1 is 80.7% slower |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $0.08 / $0.14 | |
| Input modalities | Text, Image | Text, Image |
Mistral Small 3.1 vs GPT-5.6 Terra (Medium): 76.4% less intelligence, 93.8% less cost to run the AA benchmark, and 80.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
- Mistral Small 3.1 is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
GPT-5.6 Terra (Medium)Mistral Small 3.1Today'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-terra-medium/mistral-small-3-1 · Markdown: /api/v1/compare/gpt-5-6-terra-medium/mistral-small-3-1?format=md · llms.txt · agent skill