Comment by hughrlomas

The official openai-cookbook (https://github.com/openai/openai-cookbook) used to have an explicit, but buried, call out that instruction-following models like `text-davinci-003` were "Less diverse; less creative; sometimes harder to steer tone, style, etc." as opposed to base completion models like `davinci`.

It stood out to me because it seemed to be an internal admission that this training narrowed the potential of the models.

Required a bit of digging but I found the old file in the history, the relevant text is in the comparison table at the bottom: https://github.com/openai/openai-cookbook/blob/c651bfdda64ac...