GLM-5.3-Flash vs Grok 4.5 (High)
Which is better for the money: GLM-5.3-Flash by Z AI or Grok 4.5 (High) by SpaceXAI? 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
Grok 4.5 (High) vs GLM-5.3-Flash: 7.2% less intelligence, 307.1% more cost to run the AA benchmark, and 51.6% faster end-to-end.
| Metric | GLM-5.3-Flash | Grok 4.5 (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 41.8 | 38.8 | −7.2% Grok 4.5 (High) is 7.2% less intelligent |
| Total AA cost (lower is better) | $305.52 | $1,243.85 | +307.1% Grok 4.5 (High) is 4.1× more expensive |
| End-to-end time (lower is better) | 38.89s | 18.82s | −51.6% Grok 4.5 (High) is 51.6% faster |
| Price per 1M tokens (in / out) | $0.15 / $0.50 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
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.
- Grok 4.5 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GLM-5.3-FlashGrok 4.5 (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/grok-4-5 · Markdown: /api/v1/compare/glm-5-3-flash/grok-4-5?format=md · llms.txt · agent skill