[andreyk]

"The purely prompt-driven ones are essentially just ChatGPT in a trench coat. They’re effectively a way of bookmarking and sharing custom instructions, which is fun and useful but doesn’t feel like a revolution in how we build on top of these tools."

This is missing one important aspects of GPTs: fine tuning. As with ChatGPT, the UI allows you to thumbs up / thumbs down replies, which results in data that OpenAI can be used to improve the model. If (and I have no idea if this is the case) OpenAI invests in finetuning individual GPTs on their own distinct datasets, a GPT could diverge from being a "chatgpt in a trenchgoat" pretty significantly with use.

[simonw]

I very much doubt that existing GPTs have any fine tuning features at all. If they did then OpenAI would have shouted it from the rooftops.

They might by storing those up/downvotes for some far-future (and likely very expensive) fine-tuned GPT product, but I think it's more likely they just inherited those buttons from existing ChatGPT.

[andreyk]

Yeah, that's most likely true. I am less sure this would be a "far future" feature, though, given it's probably not a ton of work and power users would probably be willing to pay for it. We shall see, OpenAI moves fast...