Claude Opus 5 (Low) vs GLM-5.3-Flash
Which is better for the money: Claude Opus 5 (Low) by Anthropic or GLM-5.3-Flash by Z AI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick GLM-5.3-Flash
GLM-5.3-Flash vs Claude Opus 5 (Low): 6.1% more intelligence, 80.4% less cost to run the AA benchmark, and 239.9% slower end-to-end.
| Metric | Claude Opus 5 (Low) | GLM-5.3-Flash | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.4 | 41.8 | +6.1% GLM-5.3-Flash is 6.1% more intelligent |
| Total AA cost (lower is better) | $1,560.91 | $305.52 | −80.4% GLM-5.3-Flash is 80.4% cheaper |
| End-to-end time (lower is better) | 11.44s | 38.89s | +239.9% GLM-5.3-Flash is 239.9% slower |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $0.15 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
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-Flash is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Opus 5 (Low)GLM-5.3-FlashToday'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-flash · Markdown: /api/v1/compare/claude-opus-5-low/glm-5-3-flash?format=md · llms.txt · agent skill