Claude 4.5 Sonnet (Reasoning) vs Mistral Small 3.1
Which is better for the money: Claude 4.5 Sonnet (Reasoning) by Anthropic or Mistral Small 3.1 by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude 4.5 Sonnet (Reasoning) scores 13.6 points higher (20.7 vs 7.1) but costs 54× as much to run the benchmark ($1501 vs $27.8; premium vs budget cost classes). They are not alternatives at one budget: pick Claude 4.5 Sonnet (Reasoning) when you need intelligence above 7.1, and Mistral Small 3.1 when 7.1 is enough.
| Metric | Claude 4.5 Sonnet (Reasoning) | Mistral Small 3.1 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.7 | 7.1 | −65.7% Mistral Small 3.1 is 65.7% less intelligent |
| Total AA cost (lower is better) | $1,501.22 | $27.82 | −98.1% Mistral Small 3.1 is 98.1% cheaper |
| End-to-end time (lower is better) | 21.58s | 11.25s | −47.9% Mistral Small 3.1 is 47.9% faster |
| Price per 1M tokens (in / out) | $3.00 / $15.0 | $0.08 / $0.14 | |
| Input modalities | Text, Image | Text, Image |
Mistral Small 3.1 vs Claude 4.5 Sonnet (Reasoning): 65.7% less intelligence, 98.1% less cost to run the AA benchmark, and 47.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude 4.5 Sonnet (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Mistral Small 3.1 is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
Claude 4.5 Sonnet (Reasoning)Mistral Small 3.1Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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