Doesn’t mean it’s more complex though.

It just means the complexity is harder to capture and copy.

LLMs are built via algorithm. Given enough data and a large enough neural network the complexity of an LLM is boundless. I guess my question is are existing LLMs more complex?

LLM research has a much bigger budget than C. Elegans research.

More complex and more advanced are not the same thing. Evolution produces a lot of twisty little passages that are only that way because it happened to work.