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What is Grok Build 0.1?

Grok Build 0.1 is a developer-focused AI model from xAI that has been specifically trained for agentic software engineering workflows. The model is designed to go beyond traditional code generation by supporting multi-step problem solving, planning, implementation, testing, and iterative refinement. It can process both text and image inputs, allowing developers to provide code snippets, architecture diagrams, screenshots, and technical documents as context. Grok Build 0.1 is optimized for interactive coding environments where AI agents need to perform complex actions across multiple stages of development. The model supports advanced capabilities such as tool calling, structured JSON outputs, and workflow automation, making it suitable for integration into modern engineering pipelines. With a 256,000-token context window, it can analyze large codebases and maintain awareness of extensive project histories. The platform is designed to work effectively with autonomous coding agents that require planning and reasoning abilities to complete sophisticated tasks. xAI has positioned the model as a successor to Grok Code Fast models, focusing on long-running development workflows rather than simple coding assistance. Grok Build 0.1 is available through API access, enabling organizations to incorporate its capabilities into custom applications and developer tools. Its architecture supports scenarios such as debugging, refactoring, code reviews, automation, and collaborative software development. The model helps developers increase productivity by providing AI assistance that can understand, reason about, and execute complex engineering tasks at scale.

What is Grok 4.1 Fast?

Grok 4.1 Fast is xAI’s state-of-the-art tool-calling model built to meet the needs of modern enterprise agents that require long-context reasoning, fast inference, and reliable real-world performance. It supports an expansive 2-million-token context, allowing it to maintain coherence during extended conversations, research tasks, or multi-step workflows without losing accuracy. xAI trained the model using real-world simulated environments and broad tool exposure, resulting in extremely strong benchmark performance across telecom, customer support, and autonomy-driven evaluations. When integrated with the Agent Tools API, Grok can combine web search, X search, document retrieval, and code execution to produce final answers grounded in real-time data. The model automatically determines when to call tools, how to plan tasks, and which steps to execute, making it capable of acting as a fully autonomous agent. Its tool-calling precision has been validated through multiple independent evaluations, including the Berkeley Function Calling v4 benchmark. Long-horizon reinforcement learning allows it to maintain performance even across millions of tokens, which is a major improvement over previous generations. These strengths make Grok 4.1 Fast especially valuable for enterprises that rely on automation, knowledge retrieval, or multi-step reasoning. Its low operational cost and strong factual correctness give developers a practical way to deploy high-performance agents at scale. With robust documentation, free introductory access, and native integration with the X ecosystem, Grok 4.1 Fast enables a new class of powerful AI-driven applications.

Media

Media

Integrations Supported

Cursor
Grok
OpenClaw
OpenRouter
C#
CSS
Clawd.run
Clojure
Doraverse
Go
Grok Imagine
HTML
JavaScript
Julia
Kilo Code
Microsoft Foundry Models
Ruby
SuperGrok
Vercel AI Gateway
Zo Computer

Integrations Supported

Cursor
Grok
OpenClaw
OpenRouter
C#
CSS
Clawd.run
Clojure
Doraverse
Go
Grok Imagine
HTML
JavaScript
Julia
Kilo Code
Microsoft Foundry Models
Ruby
SuperGrok
Vercel AI Gateway
Zo Computer

API Availability

Has API

API Availability

Has API

Pricing Information

$1 per 1M tokens (input)
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

xAI

Date Founded

2023

Company Location

United States

Company Website

x.ai/

Company Facts

Organization Name

xAI

Date Founded

2023

Company Location

United States

Company Website

grok.com

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