Tag: Mythos

Anthropic reverses silent downgrade policy for Claude Fable 5 after backlash

After criticism from developers and researchers, Anthropic says Claude Fable 5 will now tell users when a request is blocked or rerouted to a less capable model.

Jun 12, 2026

AI Companies

Anthropic launches Claude Opus 4.8 and raises $65 billion at a record valuation

Anthropic unveiled Claude Opus 4.8, said its Mythos-class models will reach wider release within weeks, and raised $65 billion at a valuation reported near $965 billion.

May 29, 2026