Grok Build 0.1

Grok Build 0.1 is SpaceXAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding agents, tool use, and multi-step development tasks. The model powers SpaceXAI’s Grok Build CLI and features a 256K context window with no text output limit, making it well suited for long-horizon coding and automation workflows. Currently in early access.

ChatxAI256k tokens$1.0901 / $2.1801 · 1M

x-ai/grok-build-0.1

Context
256k tokens
Completion cap
—
Tools
Yes
JSON
Yes
Released
2026-05-20

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "x-ai/grok-build-0.1",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Grok Build 0.1?
Grok Build 0.1 is SpaceXAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding agents, tool use, and multi-step development tasks. The model powers SpaceXAI’s Grok Build CLI and features a 256K context window with no text output limit, making it well suited for long-horizon coding and automation workflows. Currently in early access. Grok Build 0.1 runs on the Geek Hub API (OpenAI-compatible). Model id: x-ai/grok-build-0.1.
Is Grok Build 0.1 free?
No. Input is $1.0901 per 1M tokens and output is $2.1801 per 1M tokens on Geek Hub (markup included).
What is the context length of Grok Build 0.1?
Grok Build 0.1 has a 256k tokens context window.
Does Grok Build 0.1 support tool calling and structured outputs?
Grok Build 0.1 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was Grok Build 0.1 released?
Grok Build 0.1 was released on 2026-05-20.

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