GLM-5.3 (Max) vs GPT-6 Astra (Xhigh)
Which is better for the money: GLM-5.3 (Max) by Z AI or GPT-6 Astra (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (Xhigh) scores 7.6 points higher (52.4 vs 44.8) but costs 1.5× as much to run the benchmark ($3803 vs $2503; both flagship class). Pick GPT-6 Astra (Xhigh) when the extra intelligence is worth the premium, otherwise GLM-5.3 (Max).
| Metric | GLM-5.3 (Max) | GPT-6 Astra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 44.8 | 52.4 | +17.0% GPT-6 Astra (Xhigh) is 17.0% more intelligent |
| Total AA cost (lower is better) | $2,503.48 | $3,802.98 | +51.9% GPT-6 Astra (Xhigh) is 51.9% more expensive |
| End-to-end time (lower is better) | 27.84s | 158.33s | +468.7% GPT-6 Astra (Xhigh) is 468.7% slower |
| Price per 1M tokens (in / out) | $1.40 / $4.40 | $10.0 / $50.0 | |
| Input modalities | Text | Text, Image |
GPT-6 Astra (Xhigh) vs GLM-5.3 (Max): 17.0% more intelligence, 51.9% more cost to run the AA benchmark, and 468.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GLM-5.3 (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- GPT-6 Astra (Xhigh) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
GLM-5.3 (Max)GPT-6 Astra (Xhigh)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/gpt-6-astra-xhigh · Markdown: /api/v1/compare/glm-5-3/gpt-6-astra-xhigh?format=md · llms.txt · agent skill