Elon Musks company xAI released a new coding model, Grok-Code-Fast-1, on August 28, 2025, positioning it as an "agentic" model. Unlike traditional assistants that suggest code snippets, this model can autonomously perform complex development tasks. Once given an assignment, Grok-Code-Fast-1 can independently use tools familiar to developers: executing commands in a terminal, searching for information in files (grep), and making changes to the codebase. The model has demonstrated outstanding performance, scoring 70.8% on the challenging SWE-Bench-Verified benchmark, which evaluates an AIs ability to solve real-world problems from GitHub repositories. xAI has adopted an aggressive go-to-market strategy by providing free access to the model for a limited time through integration with leading platforms, including GitHub Copilot, Cursor, and Cline. This move aims to rapidly popularize the model within the developer community and showcase its advantages in speed and cost-effectiveness.
xAI Releases Grok-Code-Fast-1 — a High-Performance Agentic Coding Model
