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LLMS • CURATED • UPDATED JUN 9, 2026

Claude Mythos 5

Limited-availability Mythos-class model without Fable 5 safety classifiers

Anthropic's Mythos-class model announced on June 9, 2026, shares the same capabilities as Claude Fable 5 without the safety classifiers. It is offered only in limited availability to approved customers through Anthropic's Project Glasswing program.

Pricing Enterprise
Platforms web, api
API Yes
Open Source No
Modalities LLMs, Multimodal Reasoning
Best For Best for Controlled Research
Date Added 2026-06-09

Mythos 5 is a notable limited-availability variant of the Mythos-class tier, distinct from the generally available Fable 5.

Website
Claude Fable 5 GPT-6 Astra NotebookLM Claude Opus 5 GPT-5.6 Sol
Enterprise

Enterprise pricing — contact Claude Mythos 5 for a custom quote and contract terms.

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Q

Is Claude Mythos 5 free?

A

Claude Mythos 5 is offered as an enterprise solution; contact the provider for pricing.

Q

Does Claude Mythos 5 have an API?

A

Yes, Claude Mythos 5 offers an API for programmatic integration.

Q

What is Claude Mythos 5 best for?

A

Claude Mythos 5 is best for Controlled Research. Anthropic's Mythos-class model announced on June 9, 2026, shares the same capabilities as Claude Fable 5 without the safety classifiers. Mythos 5 is a notable limited-availability variant of the Mythos-class tier, distinct from the generally available Fable 5.

Q

What platforms does Claude Mythos 5 support?

A

Claude Mythos 5 supports web, api.

Q

Is Claude Mythos 5 open source?

A

No, Claude Mythos 5 is not open source.

Q

How do I use Claude Mythos 5?

A

Claude Mythos 5 is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses.

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