GPT-6 Luna vs Grok 4.20

GPT-6 Luna against Grok 4.20
GPT-6 LunaGrok 4.20
Coding index57.333.3
Benchmarks behind it Verified, 5 benchmarks Partial, 2 benchmarks
Output $/Mtok$0.50$2.50
Cost per solved taskNot computable$0.72
Context window1.05M2M