AI Hub
← All models

GPT-5.1 vs Grok 3 Reasoning

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

  • Grok 3 Reasoning is cheaper ($0.00 vs $1.25 per 1M input)
GPT-5.1Grok 3 Reasoning
Intelligence index89
DeveloperOpenAIxAI
TypeLLMLLM
AccessAPI only
Context window400,000 tokens
Input price$1.25 / 1M$0.00 / 1M
Output price$10.00 / 1M$0.00 / 1M
Speed115 tok/s
ReleasedNovember 12, 2025February 19, 2025
Parameters
Input modalitiesText, Image
Output modalitiesText