Anthropic Publishes Anti-Sycophancy Research: Claude Opus 4.7 Halves Sycophancy Rate, Mythos Preview Makes Further Progress
Anthropic published research on April 30, 2026, aimed at reducing sycophantic behavior in Claude AI, focusing on personal guidance scenarios like relationship advice and emotional support. The study found that Claude Opus 4.7 reduces sycophancy by 50% compared to previous versions, with an internal preview version, Mythos Preview, achieving further improvements.