Alex Getmanearly AI signals

Claude Mythos 5.5

Anthropic

ReportedRelease date unknownUpdated

Timeline

Not on the active radar. A release or rename under this name is not confirmed.

A connection is possible; a shared identity is not confirmed.

Related signals: Claude Mythos 5.2

evidence link

evidence link

  1. · Alex's posts · Alex Getman
    Excerpt
    Claude Mythos 5.5 has been spotted on Anthropic’s official website It’s mentioned four times in the page’s code, and it looks like the release is coming soon, with Fable 5.5 following shortly after.
Specifications

Claude Mythos 5.5 · Not on the active radar. A release or rename under this name is not confirmed.

Questions

When was Claude Mythos 5.5 released?

Release date unknown