I'm a software engineer and I'm in a similar boat. The models have definitely gotten better, but all the latest frontier models have been within the same order of magnitude of usefulness for many months now. Opus 4.5 was a huge boon in productivity, and I certainly write less code by hand than I did when it came out, but I can't say that my workflow has changed drastically for many months. Every model still takes some amount of babysitting to ensure it's doing the right thing, and they all make silly mistakes sometimes.