Its technical performance is particularly notable for its speed. Thanks to prompt caching, grok-code-fast-1 achieves cache hit rates above 90 percent and can handle multiple tool calls before the first output lines are visible. The model supports a wide range of programming languages, including TypeScript, Python, Java, Rust, C++, and Go. It can perform a variety of tasks, from setting up new projects to answering programming questions and targeted bug fixing.