My first paper Anthropic is out! We show that Chains-of-Thought often don’t reflect models’ true reasoning—posing challenges for safety monitoring. It’s been an incredible 6 months pushing the frontier toward safe AGI with brilliant colleagues. Huge thanks to the team! 🙏

Somewhat surprising that faithfulness of chain-of-thought doesn't improve much with outcome-based RL

🧵✨🙏 With the new Claude Opus 4, we conducted what I think is by far the most thorough pre-launch alignment assessment to date, aimed at understanding its values, goals, and propensities. Preparing it was a wild ride. Here’s some of what we learned. 🙏✨🧵