GPT-5.6 Terra (Max) vs Grok 4.6 (Medium)
Which is better for the money: GPT-5.6 Terra (Max) by OpenAI or Grok 4.6 (Medium) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick Grok 4.6 (Medium)
Grok 4.6 (Medium) vs GPT-5.6 Terra (Max): 1.7% more intelligence, 37.7% less cost to run the AA benchmark, and 70.7% faster end-to-end.
| Metric | GPT-5.6 Terra (Max) | Grok 4.6 (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 42.1 | 42.8 | +1.7% Grok 4.6 (Medium) is 1.7% more intelligent |
| Total AA cost (lower is better) | $2,500.72 | $1,557.04 | −37.7% Grok 4.6 (Medium) is 37.7% cheaper |
| End-to-end time (lower is better) | 107.91s | 31.67s | −70.7% Grok 4.6 (Medium) is 70.7% faster |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- Grok 4.6 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.6 Terra (Max)Grok 4.6 (Medium)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-terra/grok-4-6-medium · Markdown: /api/v1/compare/gpt-5-6-terra/grok-4-6-medium?format=md · llms.txt · agent skill