Yes
Once Opus came out in November though, it was like someone flipped a switch
enraged_camel on Hacker News
total productivity gains were around 10-15%
In the thread “Preliminary data from a longitudinal AI impact study”
Helped: Opus 4.5's superior autonomous work capabilities and reduced need for intervention.
… It was very helpful, but my total productivity gains were around 10-15%, which is pretty much what the study found. Once Opus came out in November though, it was like someone flipped a switch. It was much more capable at autonomous work and required way less hand-holding, intervention or course-correction. …