GPT-5 Mini vs Grok 4.5

GPT-5 Mini against Grok 4.5
GPT-5 MiniGrok 4.5
Coding index34.258.6
Benchmarks behind it Partial, 2 benchmarks Verified, 6 benchmarks
Output $/Mtok$2.00$6.00
Cost per solved task$0.08$0.62
Context window400K500K