![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 assets.anthropic.com: Claude Sonnet 4.5 System Card [pdf]](https://hn.urlbox.com/shots/renders/2025/9/29/4573a3be-4cc3-4bb6-8a2f-3a73f546e637.jpg)
First screen, captured .
Looks similar
![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.
![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)
A QR code that sends you to a different destination – lenticular and adversarial(mstdn.social)
512 points by zdw | 71 comments
A Mastodon post showing a QR code that resolves to different destinations depending on viewing angle or scanner, using lenticular and adversarial techniques.