Claude Opus 5 (Low) vs GLM-5.3 (Low)
Which is better for the money: Claude Opus 5 (Low) by Anthropic or GLM-5.3 (Low) by Z AI? 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 Opus 5 (Low) scores 5.1 points higher (39.4 vs 34.3) but costs 1.5× as much to run the benchmark ($1561 vs $1013; both premium class). Pick Claude Opus 5 (Low) when the extra intelligence is worth the premium, otherwise GLM-5.3 (Low).
| Metric | Claude Opus 5 (Low) | GLM-5.3 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.4 | 34.3 | −12.9% GLM-5.3 (Low) is 12.9% less intelligent |
| Total AA cost (lower is better) | $1,560.91 | $1,012.50 | −35.1% GLM-5.3 (Low) is 35.1% cheaper |
| End-to-end time (lower is better) | 11.37s | 31.07s | +173.3% GLM-5.3 (Low) is 173.3% slower |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $1.40 / $4.40 | |
| Input modalities | Text, Image | Text |
GLM-5.3 (Low) vs Claude Opus 5 (Low): 12.9% less intelligence, 35.1% less cost to run the AA benchmark, and 173.3% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GLM-5.3 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
Claude Opus 5 (Low)GLM-5.3 (Low)Today'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/claude-opus-5-low/glm-5-3-low · Markdown: /api/v1/compare/claude-opus-5-low/glm-5-3-low?format=md · llms.txt · agent skill