[danpalmer]

I'm not sure that's true though. The first line of the ChatGPT blog post is:

> We’ve trained a model called ChatGPT which interacts in a conversational way

It really seems that GPT-3/3.5/4/etc are the generic models, and that ChatGPT is the fine tuning, a safety layer, and so on. This is also why ChatGPT and Bing don't provide the same or even remotely equivalent answers despite both running on GPT-4.

[dizhn]

As far as I know the current chatGPT running on the chat.openai website is specifically gpt3.5-turbo .