Opus 5.5 is the model for people who do actual work: build products, write code.
- It's good from low effort to max. Higher effort goes deeper, not wider. Lower effort leaves space for you to fill in, which I love.
- It uses fewer tokens than the last Opus and doesn't run in circles like Opus 5 did.
- It's easier to steer than Fable in some cases.
- It can run for a long time, but in-the-loop work is where it feels special.
I think this is the model that brings the next wave of people into AI, the way 4.5 did.