GPT-5.6 Luna vs Grok 4.6

GPT-5.6 Luna against Grok 4.6
GPT-5.6 LunaGrok 4.6
Coding index58.065.7
Benchmarks behind it Verified, 6 benchmarks Verified, 6 benchmarks
Output $/Mtok$1.20$6.00
Cost per solved task$0.04$0.82
Context window1.05M500K