# Anthropic Releases Claude Fable 5.2 and Restricted Mythos 5.2

> Anthropic released the same upgraded model in two tiers: a broadly available version with stronger safeguards, and a restricted version with tighter controls on advanced capabilities.

- Type: AI news
- Page: https://completeaitraining.com/news/anthropic-releases-claude-fable-52-and-restricted-mythos-52/
- Published: 2026-11-09
- Updated: 2026-11-10
- Author: Jeroen Erne
- Jobs: Creatives, Education, Executives and strategy, Healthcare, Human resources, IT and development, Management, PR and communications, Product development, Science and research, Writers
- Reading time: 1 min

Anthropic has released two access tiers for the same upgraded model: Claude Fable 5.2 and Restricted Mythos 5.2. Fable is broadly available and ships with stronger safeguards. Mythos is restricted to verified programs and operates under tighter controls around advanced capabilities.

The launch pairs these access changes with lower input pricing and faster performance. Organizations evaluating the update will find the same underlying model across both tiers, with the primary differences being the level of access and the guardrails applied.

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