GPT-5 Mini vs Grok 4.20

GPT-5 Mini against Grok 4.20
GPT-5 MiniGrok 4.20
Coding index34.233.3
Benchmarks behind it Partial, 2 benchmarks Partial, 2 benchmarks
Output $/Mtok$2.00$2.50
Cost per solved task$0.08$0.72
Context window400K2M