Effective AI coding is actually extremely slow if you take into account an exhaustive planning stage where the task specification is laid down in sufficient and unambiguous detail. I had to get the LLM to review my spec over twenty times, always freshly, before I thought it was good enough to be implemented well. Also, it really helps for multiple diverse LLMs to review the spec, as they all have their unique insights. In this way, AI coding also helps me avoid numerous bugs that could have left me in trouble if not for the AI.

Once the planning is done, the actual coding is very fast. The human review that follows is again slow, often also leading to minor new tickets.