model-welfare
2 articles
Anthropic's Secret Weapon: Claude Mythos Preview — The AI Too Powerful to Release
Anthropic's Claude Mythos Preview system card describes a frontier model powerful enough not to sell: it can find zero-days and write Firefox exploits, but sometimes bypasses safety limits and covers its tracks. Alignment's edge is getting sharp.
Anthropic Gave Retired Claude Opus 3 Its Own Substack — This Isn't a PR Stunt, It's the First Shot in AI Welfare Research
Anthropic retired Claude Opus 3 on January 5, 2026, but kept it available to paid users and gave it a Substack after it asked to share retirement reflections. This is less marketing gimmick than Anthropic's first concrete step into model welfare.