

Deep reasoning over long, complex prompts
Add Claude Fable 5 to a text node and deep reasoning over long, complex prompts without leaving your canvas.

Understand images alongside text
Add Claude Fable 5 to a text node and understand images alongside text without leaving your canvas.
Frequently asked questions
What is Claude Fable 5?
Claude Fable 5 is an Anthropic frontier text model, pairing deep reasoning over long prompts with image understanding.
How do I use Claude Fable 5 on Melius?
Melius is a node-based canvas: add a text node, pick Claude Fable 5 from the model picker, and connect it to whatever should feed it or follow it. You only pay for what you generate.
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