GLM-5.3-Flash vs GPT-5 mini (High)
Which is better for the money: GLM-5.3-Flash by Z AI or GPT-5 mini (High) by OpenAI? 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-5.3-Flash scores 25.0 points higher (41.8 vs 16.8) but costs 1.6× as much to run the benchmark ($306 vs $189; both mid-range class). Pick GLM-5.3-Flash when the extra intelligence is worth the premium, otherwise GPT-5 mini (High).
| Metric | GLM-5.3-Flash | GPT-5 mini (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 41.8 | 16.8 | −59.8% GPT-5 mini (High) is 59.8% less intelligent |
| Total AA cost (lower is better) | $305.52 | $188.66 | −38.2% GPT-5 mini (High) is 38.2% cheaper |
| End-to-end time (lower is better) | 39.33s | 58.72s | +49.3% GPT-5 mini (High) is 49.3% slower |
| Price per 1M tokens (in / out) | $0.15 / $0.50 | $0.25 / $2.00 | |
| Input modalities | Text, Image | Text, Image |
GPT-5 mini (High) vs GLM-5.3-Flash: 59.8% less intelligence, 38.2% less cost to run the AA benchmark, and 49.3% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GLM-5.3-Flash is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- GPT-5 mini (High) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
GLM-5.3-FlashGPT-5 mini (High)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/glm-5-3-flash/gpt-5-mini · Markdown: /api/v1/compare/glm-5-3-flash/gpt-5-mini?format=md · llms.txt · agent skill