All models
Anthropic: Claude Mythos 5.5
Coming soonProvisional ID
The next model in Anthropic's restricted Mythos line. It isn't out yet and may stay limited to vetted organizations. Use Claude Opus 5.5 for now.
Status
Not released yet
Official price (in / out)
Not announced
Context
Not announced
Released
Not announced
What we know
- Not released: no date, model ID or price yet.
- On November 1, the name Claude Mythos 5.5 appeared on Anthropic's Mythos page.
- The current Mythos 5.1 is open only to vetted cybersecurity and life-science teams.
Until it's out, use these two
Same key, just switch the model ID.
Claude Fable 5.1
claude-fable-5-1
Anthropic's strongest generally available line, for the hardest reasoning.
Background and sources
- The Mythos line is built for cybersecurity and biology research. The previous generation wasn't offered on the general API, so TeamoRouter can't promise Mythos 5.5 here.
Sources