Claude Opus 5.5 (High, Default Fallback) vs Grok 4.20 0309 v2 (Reasoning)
Claude Opus 5.5 (High, Default Fallback) vs Grok 4.20 0309 v2 (Reasoning). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
Verdict
Comparison incomplete
A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
| Metric | Claude Opus 5.5 (High, Default Fallback) | Grok 4.20 0309 v2 (Reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 53.6 | 25.7 | −52.1% Grok 4.20 0309 v2 (Re… is 52.1% less intelligent |
| Total AA cost (lower is better) | $2,172.43 | Not reported | — not comparable |
| End-to-end time (lower is better) | 36.61s | 20.81s | −43.2% Grok 4.20 0309 v2 (Re… is 43.2% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $1.25 / $2.50 | |
| Input modalities | Text, Image | Text, Image |
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-high/grok-4-20 · Markdown: /api/v1/compare/claude-opus-5-5-high/grok-4-20?format=md · llms.txt · agent skill