Bear in mind that ChatGPT has general use when directing through prompts.

Given a non-zero-shot set of prompts, catered to BCT, you could very easily create an engine for post generation. Though, it is magnitudes more expensive than GPT-3 Davinci (if you're paying). If you had enough resources, though, you could easily sidestep the OpenAI cluster and try to use other models (e.g. EleutherAI).