xAI Grok Build 0.1 API Release

xAI has launched grok-build-0.1 in public beta via the xAI API. This model is specifically engineered for agentic coding tasks, providing a high-throughput, cost-effective solution for developers building autonomous coding agents and tool-calling applications.

Model Capabilities and Specializations

grok-build-0.1 is designed for agentic coding workflows, with a specific focus on web development, debugging, and support for the Model Context Protocol (MCP). It is the underlying model that powers the Grok Build environment.

Beyond specialized coding tasks, the model is also positioned as a high-speed, economical option for general-purpose agentic workflows and tool-calling use cases.

Performance and Pricing

The model is served at a speed of 100+ tokens per second, providing the low latency required for iterative agentic loops. Pricing is for the xAI API is set at:

• Input: $1 per million tokens
• Output: $2 per million tokens

Integration and Ecosystem

grok-build-0.1 is optimized for use within agentic harnesses. xAI recommends its use in the following environments:

• First-party tools: Grok Build
• Third-party agentic frameworks: Cursor, Hermes Agent, OpenClaw, Kilo Code, and OpenCode
• API Gateways: The model is accessible via OpenRouter and the Vercel AI Gateway.