Anthropic launches Claude Fable 5, Mythos 5

// 1h agoMODEL RELEASE

Anthropic launches Claude Fable 5, Mythos 5

Anthropic has released Claude Fable 5 and Claude Mythos 5, marking the debut of its "Mythos-class" model tier tailored for complex, long-running autonomous agentic tasks. Claude Fable 5 is publicly available at $10 per million input tokens and $50 per million output tokens with automated safety routing to Claude Opus 4.8, while the unrestricted Claude Mythos 5 remains restricted to select partners for critical software security.

// ANALYSIS

Anthropic's introduction of the Mythos-class models highlights a growing shift toward specialized agentic tiers, using active query routing as a novel compromise between safety and frontier capabilities.

* The steep pricing of $10 input and $50 output per million tokens positions these models for high-value enterprise automation.

* The automatic redirection of sensitive tasks to Claude Opus 4.8 shows a practical multi-tier approach to safety.

* Featuring a 128,000-token output capacity and Adaptive Thinking, these models are tailored specifically for autonomous agentic workflows.

// TAGS

anthropicclaude-fable-5claude-mythos-5llmsafetygenerative-ai

DISCOVERED

1h ago

2026-06-10

PUBLISHED

2h ago

2026-06-10

RELEVANCE

9/ 10

AUTHOR

moulougueta

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