Claude Haiku 5.5 (Medium) vs GLM-5.3-Flash
Which is better for the money: Claude Haiku 5.5 (Medium) 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 2026-10-24.
Trade-off
Verdict
Depends on your budget
GLM-5.3-Flash scores 7.3 points higher (41.8 vs 34.5) but costs 5.4× as much to run the benchmark ($306 vs $56.4; both mid-range class). They are not alternatives at one budget: pick GLM-5.3-Flash when you need intelligence above 34.5, and Claude Haiku 5.5 (Medium) when 34.5 is enough.
| Metric | Claude Haiku 5.5 (Medium) | GLM-5.3-Flash | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.5 | 41.8 | +21.2% GLM-5.3-Flash is 21.2% more intelligent |
| Total AA cost (lower is better) | $56.36 | $305.52 | +442.1% GLM-5.3-Flash is 5.4× more expensive |
| End-to-end time (lower is better) | 10.41s | 39.33s | +277.8% GLM-5.3-Flash is 277.8% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.15 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GLM-5.3-Flash vs Claude Haiku 5.5 (Medium): 21.2% more intelligence, 442.1% more cost to run the AA benchmark, and 277.8% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Haiku 5.5 (Medium) is on today's frontier: nothing is both smarter and cheaper.
- GLM-5.3-Flash is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Haiku 5.5 (Medium)GLM-5.3-FlashToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
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