Anthropic guide maps Claude models to task scale in Claude Code
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Anthropic published guidance on which Claude model to use for different kinds of work in Claude Code, now that Fable 5.2 is available. According to the guide, Opus 5.5 is the starting point for planning and building full features, while Fable 5.2 is meant for the most ambitious, open-ended technical work. Sonnet 5.5 covers everyday tasks such as fixing a bug or drafting a document, and Haiku 5.5 handles small tasks done repeatedly. The guide also describes splitting a single job across models. Anthropic says availability and usage limits vary by plan, so which models a user can reach depends on their subscription.
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- Claude YouTubeWhen to use each Claude model: Opus 5.5, Fable 5.2, Sonnet 5.5 and Haiku 5.5
Anthropic's guidance matches each Claude model to the scale of the work: Opus 5.5 for planning and building full features, and Fable 5.2 for the most ambitious, open-ended technical work. Sonnet 5.5 covers everyday tasks such as fixing a bug or drafting a doc, while Haiku 5.5 handles the smaller tasks done again and again.
- Claude YouTubeFable 5.2 or Opus? When to use each model in Claude Code
Claude Fable 5.2 is now available, and a new guide explains when to start on Opus 5.5, when to move up to Fable 5.2, or down to Sonnet 5.5 or Haiku 5.5 in Claude Code. It also covers splitting one job across models, with availability and usage limits varying by plan.
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