Claude Mythos: Highlights from 244-page Release

The model, the mythos, the legend. We have a new best AI model, but not all of us. How good is it, what does it’s new offensive capabilities mean? Why does it’s 244 page report card remind me of Her, and why did the creator of Claude Code call it ‘terrifying’. 30+ highlights sourced by reading the paper in full, old-school, no AI summary. https://80000hours.org/aiexplained Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai AI Insiders ($9!): https://www.patreon.com/AIExplained Chapters: 00:00 - Introduction 00:56 - Internal Release + Availability 02:37 - General Capabilities 05:12 - Self-improvement? 06:15 - ‘Terrifying’ Landscape 11:07 - Safety Decision 13:22 - Coding 14:49 - Alignment, Awareness 19:52 - GUI for Agents/Claws + Hallucinations 21:34 - …Emotions? 25:29 - Her connection 244-page System Card: https://www-cdn.anthropic.com/8b8380204f74670be75e81c820ca8dda846ab289.pdf Project Glasswing: https://www.anthropic.com/glasswing Zero-Day Details: https://red.anthropic.com/2026/mythos-preview/ Mythos ‘terrifying’: https://x.com/bcherny/status/2041605852382351666 New Yorker Altman/Amodei: https://archive.fo/20260406100412/https://www.newyorker.com/magazine/2026/04/13/sam-altman-may-control-our-future-can-he-be-trusted Alignment Risk Update: https://www-cdn.anthropic.com/79c2d46d997783b9d2fb3241de43218158e5f25c.pdf In a Park: https://x.com/sleepinyourhat/status/2041584808514744742 “Uhm” - https://x.com/thsottiaux/status/2041749947385815109 Non-hype Newsletter: https://signaltonoise.beehiiv.com/ Podcast: https://aiexplainedopodcast.buzzsprout.com/