Grok 4.1 Fast

xai

xAI's speed demon for agentic workflows requiring rapid, accurate tool execution. With an extraordinary 2M context window, this model processes massive amounts of information while maintaining blazing-fast response times. Optimized specifically for tool calling and task completion, it excels at real-world applications like customer support, financial analysis, and automated workflows where speed is critical. The non-reasoning variant prioritizes quick responses over extended thought processes. Choose this when you need rapid, reliable agent performance at incredible value.

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Capabilities

Tool Use

Image Input

Example Use Cases

Speed-critical agentic workflow

Need huge context without reasoning

Rapid tool execution at scale

Technical Specifications

Context Window

2,000,000 tokens

Max Output

30,000 tokens

Input Cost

$0.20 per 1M tokens

Output Cost

$0.50 per 1M tokens

Cache Read Cost

$0.05 per 1M tokens

Web Search Cost

$15 per 1K calls

Code Execution Cost

$0.19 per 1K calls

Availability

No account required

$0 per month

Also available in these plans

Free
Free
Plus
$20/mo
Pro
$100/mo
Super
$200/mo