GPT-6 Astra vs Grok 4.20

GPT-6 Astra against Grok 4.20
GPT-6 AstraGrok 4.20
Coding index85.133.3
Benchmarks behind it Verified, 5 benchmarks Partial, 2 benchmarks
Output $/Mtok$50.00$2.50
Cost per solved taskNot computable$0.72
Context window1.05M2M