Claude Opus 5 vs Grok 4.20

Claude Opus 5 against Grok 4.20
Claude Opus 5Grok 4.20
Coding index83.033.3
Benchmarks behind it Verified, 6 benchmarks Partial, 2 benchmarks
Output $/Mtok$25.00$2.50
Cost per solved task$1.33$0.72
Context window1M2M