xAI

Grok Build is xAI's open source terminal coding agent for exploring repositories, editing code, running commands, and completing end-to-end development tasks.

Grok 4.1 Fast

Tool-calling Grok model for production agents, code execution, search, and long-context workflows.

Grok 4.3

Frontier Grok model for coding and enterprise agents with one-million-token context and configurable reasoning effort.

Grok 4.5

SpaceXAI's frontier model for coding, agentic tasks, engineering, knowledge work, configurable reasoning, and tool-driven workflows.

Grok 4.20

High-performance Grok model with one-million-token context, configurable reasoning, and agentic tool calling.

Grok 4 Fast

Cost-efficient Grok 4 model with a two-million-token context and unified reasoning and non-reasoning modes.

Grok 4

Frontier reasoning model with native tool use, visual input, real-time search integration, and strong coding performance.

Grok Build 0.1

Dedicated coding model trained for agentic software engineering, web development, and tool-driven workflows.

Grok Code Fast 1

A reasoning model that is blazing fast and excels at agentic coding, accessible for free in Kilo Code for a limited time. Note: prompts and completions are logged by xAI and used to improve the model.