It's a language model, not a compiler. Which is what people get wrong.

Ask one to count the 'r's in "strawberry" and it may or may not get it right.

Ask it to create a program to do it, it'll get it right instantly and it'll work.

When we get to a point where "AI" can write a program like that in the background, run it and use its result as a tool, we'll get the next big leap in efficiency.