GLM-5.1 (Reasoning) vs Grok 4.6 (Medium)
Which is better for the money: GLM-5.1 (Reasoning) by Z AI or Grok 4.6 (Medium) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Grok 4.6 (Medium) scores 16.7 points higher (42.8 vs 26.1) but costs 1.0× as much to run the benchmark ($1557 vs $1487; both premium class). Pick Grok 4.6 (Medium) when the extra intelligence is worth the premium, otherwise GLM-5.1 (Reasoning).
| Metric | GLM-5.1 (Reasoning) | Grok 4.6 (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 26.1 | 42.8 | +64.0% Grok 4.6 (Medium) is 64.0% more intelligent |
| Total AA cost (lower is better) | $1,486.78 | $1,557.04 | +4.7% Grok 4.6 (Medium) is 4.7% more expensive |
| End-to-end time (lower is better) | 60.76s | 31.37s | −48.4% Grok 4.6 (Medium) is 48.4% faster |
| Price per 1M tokens (in / out) | $1.28 / $4.07 | $2.00 / $6.00 | |
| Input modalities | Text | Text, Image |
Grok 4.6 (Medium) vs GLM-5.1 (Reasoning): 64.0% more intelligence, 4.7% more cost to run the AA benchmark, and 48.4% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GLM-5.1 (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- Grok 4.6 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GLM-5.1 (Reasoning)Grok 4.6 (Medium)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-5-1/grok-4-6-medium · Markdown: /api/v1/compare/glm-5-1/grok-4-6-medium?format=md · llms.txt · agent skill