> ## 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.

# Claude Opus 5.5

> Anthropic model for coding and long-running agentic work

Claude Opus 5.5 is built for coding and long-running agentic work, with a 1M-token context and always-on adaptive thinking.

## Best For

* Coding assistants
* Long-running agents
* Complex reasoning
* Apps that work with large documents

## Features

* Strong coding ability
* Always-on adaptive thinking
* 1M-token context
* Built for multi-step work

## Ask Vibecode

Tell the AI:

> "Add Claude Opus 5.5 to my app for high-quality reasoning and coding help."

The AI will set up the integration automatically.

## Choose This If

Choose Claude Opus 5.5 for demanding coding and agent tasks. For a faster, cheaper Claude, use [Claude Sonnet 5.5](/docs/integrations/claude-sonnet-5-5). For the hardest reasoning, use [Claude Fable 5.1](/docs/integrations/claude-fable-5-1).

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

  <Card title="Claude Sonnet 5.5" icon="message-bot" href="/docs/integrations/claude-sonnet-5-5">
    Faster, lower-cost Claude
  </Card>
</CardGroup>


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