Claude Sonnet 5 (High) vs Grok 4.20 0309 v2 (Reasoning)

Claude Sonnet 5 (High) 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.

MetricClaude Sonnet 5 (High)Grok 4.20 0309 v2 (Reasoning)Difference
Intelligence (higher is better)31.725.7−18.9% Grok 4.20 0309 v2 (Re… is 18.9% less intelligent
Total AA cost (lower is better)$2,086.04Not reported— not comparable
End-to-end time (lower is better)18.97s20.14s+6.2% Grok 4.20 0309 v2 (Re… is 6.2% slower
Price per 1M tokens (in / out)$2.00 / $10.0$1.25 / $2.50
Input modalitiesText, ImageText, Image
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-high/grok-4-20 · Markdown: /api/v1/compare/claude-sonnet-5-high/grok-4-20?format=md · llms.txt · agent skill