One Useful Thing

An opinionated guide to which AI to use for various tasks, updated for summer 2026, recommends Claude or ChatGPT for real work, with GPT-5.6 Sol and Claude Opus/Fable as top choices for high-stakes is…

Wharton professor Ethan Mollick reported on June 9 that Anthropic's Claude Fable 5 model executed multi-page specifications for up to a dozen hours, outperforming public models he had used in sustaine…