Fable 5 - Claude Code Blog

Three days after launch, the US government ordered Anthropic to pull its most capable model offline — worldwide. Here's the full timeline of the Fable 5 suspension, the Amazon report that triggered it, and what the precedent means for everyone building on frontier AI.

Haiku, Sonnet, Opus, and now Fable — Anthropic ships four tiers, and picking the wrong one either burns money or fumbles the task. Here's a practical map of the lineup, what each model is for, and how to route work between them.

Fable 5 is the first Claude model to sit above Opus — a new tier, a new name, and double the price. Here's what it is, when it's worth it, what changes in the API, and how to use it well in Claude Code.