I have literally built and shipped multiple things that would have taken me many many months to do and I’ve done it in under a week.
Many of these are LLM heavy features where the LLM can literally self-evaluate and self-optimize. I start with a general feature, it will generate adverse, synthetic data, it will build a feature, optimize it the figure out new places to improve. 1 year ago, this would have taken an entire team months to do, now, it’s 2 or 3 days of work.