GPT-5.5 (Xhigh) vs Grok 4.6 (Medium)
Which is better for the money: GPT-5.5 (Xhigh) by OpenAI or Grok 4.6 (Medium) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick Grok 4.6 (Medium)
Grok 4.6 (Medium) vs GPT-5.5 (Xhigh): 11.5% more intelligence, 70.6% less cost to run the AA benchmark, and 17.5% faster end-to-end.
| Metric | GPT-5.5 (Xhigh) | Grok 4.6 (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 38.4 | 42.8 | +11.5% Grok 4.6 (Medium) is 11.5% more intelligent |
| Total AA cost (lower is better) | $5,294.36 | $1,557.04 | −70.6% Grok 4.6 (Medium) is 70.6% cheaper |
| End-to-end time (lower is better) | 40.04s | 33.02s | −17.5% Grok 4.6 (Medium) is 17.5% faster |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- 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-5.5 (Xhigh)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-5-5/grok-4-6-medium · Markdown: /api/v1/compare/gpt-5-5/grok-4-6-medium?format=md · llms.txt · agent skill