![Screenshot of www-cdn.anthropic.com: Anthropic Risk August 2026 [pdf]](https://hn.urlbox.com/shots/renders/2026/8/14/a9b51899-06eb-4d50-9ae9-d5948e7bd24b.jpg)
www-cdn.anthropic.com on Hacker News
3 stories on the front page, newest first. Scroll down to watch the site change over time.
![Screenshot of www-cdn.anthropic.com: System Card: Claude Fable 5 and Claude Mythos 5 [pdf]](https://hn.urlbox.com/shots/renders/2026/6/9/646719c4-b8c9-4207-8938-90e3d8194883.jpg)
![Screenshot of www-cdn.anthropic.com: System Card: Claude Mythos Preview [pdf]](https://hn.urlbox.com/shots/renders/2026/4/7/41bab4f5-97a2-4216-a678-7447d06ddf8b.jpg)
System Card: Claude Mythos Preview [pdf](www-cdn.anthropic.com)
811 points by be7a | 610 comments
Anthropic's PDF system card for the Claude Mythos Preview model, documenting its capabilities, evaluations, and safety assessments.