Yes
Opus 4.5 crushes everything I throw at it: complex bugs, extending existing features, adding new features in a way that matches conventions, refactors, migrations
enraged_camel on Hacker News
In the thread “Opus 4.5 is not the normal AI agent experience that I have had thus far”, replying to this comment
Helped: Clear instructions and specifying undocumented business requirements.
Got in the way: Unclear or incomplete instructions leading to broken undocumented requirements.
I work with multiple monoliths that span anywhere from 100k to 500k lines of code, in a non-mainstream language (Elixir). Opus 4.5 crushes everything I throw at it: complex bugs, extending existing features, adding new features in a way that matches conventions, refactors, migrations... The only time it struggles is if my instructions are unclear or incomplete. …