Phaseo
All model families
Anthropic

Claude 5.1

by Anthropic
Models
2
Release span
1 Sept 2026

Family members

Newest to oldest

  1. 01

    Claude Fable 5.1

    Anthropic

    1 Sept 2026
    active
  2. 02

    Claude Mythos 5.1

    Anthropic

    1 Sept 2026
    active

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