Grok Build 0.1

LLM
xAI

Grok Build 0.1 is a coding agent by xAI for professional software engineering. It runs as a CLI tool with plan-review-approve workflows, parallel subagents, MCP server support, plugins, and headless scripting mode.

Context tokens

262,144

Output tokens

262,144

Released

Apr 16, 2026

Schema

This model uses reasoning by default and is optimized for coding and agentic tasks. It is currently in early access, so behavior may change as the model matures.

Schema documentation

Capabilities

Tool use
Structured output
Thinking
Multimodal

Supported input media

image
text

Supported tools

  • Seclai Content Tools

    Inspect source documents connected to your account. Includes tools for loading full content, reading character ranges, searching within documents, viewing stats, and listing available content sources. When a source_connection_content_version_id is provided in agent run metadata it is used as the default. Otherwise the model can discover content via list_content_sources.

  • Seclai Knowledge Base

    Search your knowledge bases using semantic similarity. Includes search_knowledge_base and list_knowledge_bases. When a knowledge_base_id is provided in the prompt or agent run metadata it is used as the default. Otherwise the model can discover available knowledge bases at runtime.

  • Seclai Memory Banks

    Manage persistent memory across agent runs. Includes tools for listing memory banks, writing entries, searching memory via semantic similarity, and loading entries in chronological order. Supports two memory types: 'conversation' (speaker-attributed turns) and 'general' (freeform text). Use key to organize entries by topic, session, or user.

  • Seclai Web Tools

    Fetch web pages and search the web from within agent prompt calls. Includes seclai_web_fetch for retrieving page content in markdown, HTML, or plain text, and seclai_web_search for finding relevant pages with content snippets.

  • Web Search

    The Web Search tool enables Grok to search the web in real-time and browse web pages to find information. This allows the model to search the internet, access web pages, and extract relevant information to answer queries with up-to-date content.

  • X Search

    The X Search tool enables Grok to perform keyword search, semantic search, user search, and thread fetch on X (formerly Twitter). This allows the model to access real-time social media content, analyze posts, and gather insights from X's vast data.

Pricing

TypeCreditsUnits
Cache hit2.66Credits per 1k tokens

Variants

Context Window

Support for longer context windows.

OptionDescriptionInput credits (per 1k tokens)Output credits (per 1k tokens)
200K or More ContextContext windows of 200,000 tokens or more.26.6053.20
Less than 200K ContextContext windows less than 200,000 tokens.13.3026.60

Try This Model

Write a prompt and experiment with Grok Build 0.1 in the model experiments page. You can compare it with other models side by side.