> ## Documentation Index
> Fetch the complete documentation index at: https://www.vibecodeapp.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Grok 4 Fast Reasoning

> Faster Grok model with stronger reasoning capabilities

Grok 4 Fast Reasoning adds stronger analytical ability on top of the fast Grok experience.

It is useful when you want Grok's style and speed, but need better multi-step thinking for more demanding tasks.

## Best For

* Structured assistants
* Logic-heavy chat flows
* Research helpers
* Reasoning-heavy product features

## Features

* Fast responses
* Better reasoning than the non-reasoning variant
* Useful for multi-step tasks
* Distinct xAI model style

## Ask Vibecode

Tell the AI:

> "Add Grok 4 Fast Reasoning to my app for a fast assistant that can handle more complex multi-step questions."

The AI will set up the integration automatically.

## Choose This If

Choose this model when you want Grok's personality but need better reasoning than the standard [Grok 4 Fast](/integrations/grok-4-fast). If cost and speed matter more than deeper reasoning, use the non-reasoning version instead.

<CardGroup cols={2}>
  <Card title="Browse All Integrations" icon="grid-2" href="/integrations/index">
    See the full integrations catalog
  </Card>

  <Card title="Grok 4 Fast" icon="message-bot" href="/integrations/grok-4-fast">
    Faster, lighter Grok option
  </Card>
</CardGroup>