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Grok 4.1 Fast

Chat

xAI

x-ai/grok-4.1-fast

Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...

21

credits / gen

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Vision File Support Reasoning 2000K Context Vision (OR)

About this model

Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...

Technical Specifications

Provider

xAI

Type

Chat

Context Window

2,000,000 tokens

Pricing

21 credits

Capabilities

Vision

Can process and understand images

File Support

Can read PDF, DOCX, XLSX & more

Reasoning

Chain-of-thought reasoning exposed

2000K Context

Large context window for long documents

Vision (OR)

OpenRouter reports vision support