GPT-5.4 Mini vs Grok 4.20

GPT-5.4 Mini against Grok 4.20
GPT-5.4 MiniGrok 4.20
Coding index35.833.3
Benchmarks behind it Verified, 5 benchmarks Partial, 2 benchmarks
Output $/Mtok$4.50$2.50
Cost per solved task$0.70$0.72
Context window400K2M