It is still remarkably better than working with junior developers. I can ask it to code something based on specification and most of the time it will do better job than if I send the same task to a human.

It often makes some small mistakes, but little nudge here and there corrects them, whereas with human you have to spend a lot of time explaining why something is wrong and why this and that way would rectify it.

The difference is probably because GPT has access to a vast array of knowledge a human can't reasonably compete with.