Watchtower
Watchtower tracks changes to corporate and government AI safety policies, both announced and unannounced. Click any entry for details.
< Back
Date:
Apr 7, 2026
Anthropic
Change
Slight
Unannounced
Anthropic updated the Claude Mythos Preview System Card. The changes are minor: a naming consistency fix ("Mythos Preview" is now "Claude Mythos Preview" throughout), section renumbering, including items missing from the table of contents, and small formatting/wording edits.
While the changes themselves are trivial, the lack of versioning or a change log for a safety-critical document is notable.
A diff of the changes can be found below: