Claude Sonnet 4.5 System Card [pdf] Posted by synthwave on Monday September 29, 2025 @01:04PM from the assets.anthropic.com dept. https://assets.anthropic.com/m/12f214efcc2f457a/original/Claude-Sonnet-4-5-System-Card.pdf ( 1 comment | 36 points | on HN )
We'll put the system card link in the toptext there too.
(Sorry synthwave! - it's on our list to implement a karma sharing system for cases like this so multiple submitters can get the 'credit' for a post...)