• There are comparable models to GPT 3.5 “Turbo”, which is faster and 30x cheaper than GPT 4 (if you pay OpenAI’s regular API prices).

    I suspect that’s because GPT-4 needs 30x more memory than 3.5.

    I’m not aware of any other model that performs as well as GPT-4. In fact I suspect even 3.5 Turbo is the second best model.