Not only did I get early access and ran my own tests, as per the title I read both the 120 page Claude 4 Opus and Claude 4 Sonnet System Card, and 25 page report on ASL-3 being triggered, plus the 2 hour launch video, and surrounding coverage. Ft. coding tests, Simple, twitter controversies, deep alignment coverage, spiritual bliss and much more!

https://80000hours.org/aiexplained

Chapters: 

00:00 - Introduction
01:12 - 3 Quick Controversies

02:42 - Benchmark Results 

04:20 - 120 page Card 20 Highlights

10:07 - Coding Test
11:27 - Model Welfare and Spiritual Bliss

13:29 -  ASL-3

Claude Card: https://www-cdn.anthropic.com/4263b940cabb546aa0e3283f35b686f4f3b2ff47.pdf?s=09
ASL 3:https://www-cdn.anthropic.com/807c59454757214bfd37592d6e048079cd7a7728.pdf

Tweets: https://x.com/fish_kyle3/status/1925597284546629753

https://x.com/EMostaque/status/1925624164527874452?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Etweet

Cursor Says State of the Art for Coding: https://x.com/cursor_ai/status/1925594428095561941

Benchmarks: https://www.anthropic.com/news/claude-4