GPT-5 vs Grok 4.20

GPT-5 against Grok 4.20
GPT-5Grok 4.20
Coding index38.833.3
Benchmarks behind it Verified, 3 benchmarks Partial, 2 benchmarks
Output $/Mtok$10.00$2.50
Cost per solved task$0.39$0.72
Context window400K2M