GLM-5.1 (Reasoning) vs Mistral Small 4 (Reasoning)
Which is better for the money: GLM-5.1 (Reasoning) by Z AI or Mistral Small 4 (Reasoning) 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
GLM-5.1 (Reasoning) scores 14.8 points higher (26.1 vs 11.3) but costs 35× as much to run the benchmark ($1487 vs $42.5; premium vs budget cost classes). They are not alternatives at one budget: pick GLM-5.1 (Reasoning) when you need intelligence above 11.3, and Mistral Small 4 (Reasoning) when 11.3 is enough.
| Metric | GLM-5.1 (Reasoning) | Mistral Small 4 (Reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 26.1 | 11.3 | −56.7% Mistral Small 4 (Reas… is 56.7% less intelligent |
| Total AA cost (lower is better) | $1,486.78 | $42.50 | −97.1% Mistral Small 4 (Reas… is 97.1% cheaper |
| End-to-end time (lower is better) | 63.24s | 14.50s | −77.1% Mistral Small 4 (Reas… is 77.1% faster |
| Price per 1M tokens (in / out) | $1.28 / $4.07 | $0.15 / $0.60 | |
| Input modalities | Text | Text, Image |
Mistral Small 4 (Reasoning) vs GLM-5.1 (Reasoning): 56.7% less intelligence, 97.1% less cost to run the AA benchmark, and 77.1% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GLM-5.1 (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Mistral Small 4 (Reasoning) is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
GLM-5.1 (Reasoning)Mistral Small 4 (Reasoning)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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