AI Hub
← All models

GPT-5.1 vs Grok 4.20

OpenAI vs xAI — benchmarks, pricing, and capabilities side by side.

  • Grok 4.20 has a larger context window (2M)
GPT-5.1Grok 4.20
Intelligence index89
DeveloperOpenAIxAI
TypeLLMLLM
AccessAPI onlyAPI only
Context window400,000 tokens2,000,000 tokens
Input price$1.25 / 1M$1.25 / 1M
Output price$10.00 / 1M$2.50 / 1M
Speed115 tok/s
ReleasedNovember 12, 2025February 17, 2026
Parameters
Input modalitiesText, ImageText, Image
Output modalitiesTextText