2h agoUnannounced Claude Opus 4.8, Sonnet 4.6, and Haiku 4.5 models appear in Anthropic web and terminal interfacesThe leaked models return errors and are currently inaccessible.SentimentSentimentPos71.4%Neg28.6%Many users reacted positively to Claude's UI showing Opus 4.8 with high-effort mode as an exciting sign of progress, while others criticized the hype and worried about rising costs.15 comments with sentiment. View comments.