Grok 4.1 Fast
19 November 2025
Grok 4.1 Fast from xAI, language model published 2025-11-19. Notable for: sota improvement.
Abstract
Today, we’re excited to launch two powerful new additions to the xAI API: Grok 4.1 Fast, our best tool-calling model with a 2M context window. It reasons and completes agentic tasks accurately and rapidly, excelling at complex real-world use cases such as customer support and finance.
Sources: Epoch AI. This entry was generated from a dataset and has not been edited by hand.