It's hard to compare - prior to Opus 4.5 my code was 95% hand-written, with the occassional tab completion.
Now, I would say 80% of my code is written through an LLM, and the last 20% is usually me reviewing adjusting, etc. The part that I find cumbersome is that even when I make manual adjustments, I still need to tell the LLM, otherwise it leads to context drift.
When I compare these 2 times, I think I remember fewer specific details, but I'm getting better at creating more checkpoints.