Gemini 3.5 Flash vs Grok 4.20

Gemini 3.5 Flash against Grok 4.20
Gemini 3.5 FlashGrok 4.20
Coding index39.833.3
Benchmarks behind it Verified, 4 benchmarks Partial, 2 benchmarks
Output $/Mtok$9.00$2.50
Cost per solved task$1.21$0.72
Context window1.05M2M