Try sending this prompt to "GPT 5.6 Think Deeper" in the interface:
Provide me with optimised python code to perform a prime number search. Test the code and report on performance. Benchmark different search solutions. Provide the code in a downloadable zip archive.
A silly toy example, but it should help give a hint of what's possible.
I don't think many people are aware of just how much it can do; it's certainly not advertised, and very likely not intended.