My son used the "custom GPT" in ChatGPT a lot e.g., for Organic Chemistry and Advanced Biology. He said they saved him a ton of time as it explained basic conc

My son used the "custom GPT" in ChatGPT a lot e.g., for Organic Chemistry and Advanced Biology. He said they saved him a ton of time as it explained basic concepts when he had trouble understanding the textbook (which is written in the most Orwellian manner possible). Before, he googled Libretext and Khan Academy etc., but the custom GPTs summarizes that information nicely.