When I discovered OpenAI on the 23rd of December 2022, I became obsessed. I hadn't had this much fun coding since I started 40 years ago. After playing with "fine-tuning" for a month and miserably failing, I found a YouTube video by Dave Shapiro that explained how to create a Q&A chatbot using OpenAI's "embeddings" API.
Dave has since removed the video, but it explains how to use OpenAI's embeddings API and combine it with their chat/completion API to create a Q&A chatbot that knows "everything" about the problem domain. Tage's reaction best sums up my findings, as he told me one day.