GPT-5.2-Codex vs Grok 4.6

GPT-5.2-Codex against Grok 4.6
GPT-5.2-CodexGrok 4.6
Coding index45.465.7
Benchmarks behind it Verified, 3 benchmarks Verified, 6 benchmarks
Output $/Mtok$14.00$6.00
Cost per solved task$0.43$0.82
Context window400K500K