Claude’s new model is more ‘honest’ when it messes up

Anthropic is releasing Claude Opus 4.8, a new AI model designed to be more 'honest' by better recognizing when it doesn't have enough information to answer confidently. The model addresses a common problem where AI systems make unsupported claims (stating things as fact without solid evidence), and early testers found that Opus 4.8 is about 4 times less likely to do this compared to its predecessor.