AI Radar

Grok Build 0.1

Available · Language, Multimodal, Reasoning, Code

Grok Build 0.1 is an xAI coding model trained for agentic coding, including web development, debugging and MCP support, and the model behind xAI's Grok Build coding agent. It takes text and images and returns text; after early access in May 2026 it opened on the xAI API as a public beta on 29 May 2026. [1] [2]At a glance: Modalities [3]May: Grok Build 0.1 Primary source

Timeline of Grok Build 0.1 →

Claims and evidence

  • Released Public beta on the xAI API, per the announcement. The API release notes list Grok Build 0.1 under May 2026 as in early access, and the May 15, 2026 retirement guide already names grok-build-0.1 as the redirect target of grok-code-fast-1. Primary source[1] [3]May: Grok Build 0.1
  • Early access on the xAI API The release notes give the month only. Primary source[3]May: Grok Build 0.1
  • Status AvailableListed as a current API model with pricing when checked on 2026-10-01; it launched on the API as a public beta; the docs page carries no beta label. Primary source[2]Details [4]Text API Pricing
      • Input text, image Primary source[2]At a glance: Modalities
      • Output text Primary source[2]At a glance: Modalities
      • Context window 256,000 tokens Primary source[2]At a glance: Context window [4]Text API Pricing (256k)
      • Parameters Not disclosedNot disclosed by xAI. No claim madeNo source
      • Access APIAlso the model behind xAI's Grok Build coding agent; the post names OpenRouter and Vercel AI Gateway as further routes. Primary source[1] [2]

      Lineage

      Predecessors

      No known predecessor.

      Successors

      No known successor.

      Based on

      Not derived from another model.

      Variants and derived

      None recorded.

      Siblings

      None recorded.

      All ancestors

      None.

      All descendants

      None.

      Variants

      No variants recorded in this record.

      Related AI Radar coverage

      AI Radar coverage starts in June 2026; no coverage linked yet.

      All model releases from xAI on AI Radar →