The world changed last week—Opus 4.5 is the best coding model I’ve ever used.

It can keep coding and coding autonomously without tripping over itself—and it marks a completely new horizon for the craft of programming. The dream is here: You can write English, and make software.… pic.twitter.com/elDxx8GanO

— Dan Shipper 📧 (@danshipper) 3 décembre 2025

The world changed last week—Opus 4.5 is the best coding model I’ve ever used. It can keep coding and coding autonomously without tripping over itself—and it marks a completely new horizon for the craft of programming. The dream is here: You can write English, and make software.

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