GLM-5.1 (Reasoning) vs Solar Pro 3
Which is better for the money: GLM-5.1 (Reasoning) by Z AI or Solar Pro 3 by Upstage? 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
GLM-5.1 (Reasoning) scores 18.3 points higher (26.1 vs 7.8) but costs 9.3× as much to run the benchmark ($1487 vs $159; premium vs mid-range cost classes). They are not alternatives at one budget: pick GLM-5.1 (Reasoning) when you need intelligence above 7.8, and Solar Pro 3 when 7.8 is enough.
| Metric | GLM-5.1 (Reasoning) | Solar Pro 3 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 26.1 | 7.8 | −70.1% Solar Pro 3 is 70.1% less intelligent |
| Total AA cost (lower is better) | $1,486.78 | $159.22 | −89.3% Solar Pro 3 is 89.3% cheaper |
| End-to-end time (lower is better) | 60.76s | 18.89s | −68.9% Solar Pro 3 is 68.9% faster |
| Price per 1M tokens (in / out) | $1.28 / $4.07 | $0.15 / $0.60 | |
| Input modalities | Text | Text |
Solar Pro 3 vs GLM-5.1 (Reasoning): 70.1% less intelligence, 89.3% less cost to run the AA benchmark, and 68.9% 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.
- Solar Pro 3 is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
GLM-5.1 (Reasoning)Solar Pro 3Today'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/glm-5-1/solar-pro-3 · Markdown: /api/v1/compare/glm-5-1/solar-pro-3?format=md · llms.txt · agent skill