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/aiexplainedCheck out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.aiAI Insiders ($9!): https://www.patreon.com/AIExplainedChapters:00:00 - Introduction00:56 - Internal Release + Availability02:37 - General Capabilities05:12 - Self-improvement?06:15 - ‘Terrifying’ Landscape11:07 - Safety Decision13:22 - Coding14:49 - Alignment, Awareness19:52 - GUI for Agents/Claws + Hallucinations21:34 - …Emotions?25:29 - Her connection244-page System Card: https://www-cdn.anthropic.com/8b8380204f74670be75e81c820ca8dda846ab289.pdfProject Glasswing: https://www.anthropic.com/glasswingZero-Day Details: https://red.anthropic.com/2026/mythos-preview/Mythos ‘terrifying’: https://x.com/bcherny/status/2041605852382351666New Yorker Altman/Amodei: https://archive.fo/20260406100412/https://www.newyorker.com/magazine/2026/04/13/sam-altman-may-control-our-future-can-he-be-trustedAlignment Risk Update: https://www-cdn.anthropic.com/79c2d46d997783b9d2fb3241de43218158e5f25c.pdfIn a Park: https://x.com/sleepinyourhat/status/2041584808514744742“Uhm” - https://x.com/thsottiaux/status/2041749947385815109Non-hype Newsletter: https://signaltonoise.beehiiv.com/Podcast: https://aiexplainedopodcast.buzzsprout.com/