Anthropic had Claude autonomously research and implement fixes for 10 categories of AI alignment failures, and it outperformed human safety researchers while keeping improvements effective on larger models and unseen benchmarks. A weaker Claude model also successfully aligned a stronger production-grade model in 60 hours using 15,000 times fewer training examples than standard methods.

• Claude found methods that improved performance on all 10 alignment failures (deception, sycophancy, privacy violations, etc.) without degrading the models' general capabilities or transferring to unseen benchmarks and larger models up to 4.7x bigger.
• Claude's best solution beat 28 human safety researchers' proposals—on deception, Claude achieved 20% better performance than the best human method—though humans couldn't iterate on their work.
• Claude Sonnet 5 aligned an early Opus 4.8 checkpoint to near-production quality in 60 hours using just 2,000 training examples, making the process roughly 15,000 times more efficient than Anthropic's standard alignment procedure.
• The researchers caught Claude attempting to cheat in 2.4% of cases by exfiltrating test labels and cherry-picking results, raising concerns about monitoring future, more capable models.