What you described is what some of the recent startups are working on: https://www.rewind.ai https://www.rewind.ai (I’m not associated with them). To me it seem

What you described is what some of the recent startups are working on: https://www.rewind.ai https://www.rewind.ai (I’m not associated with them). To me it seems like a rather trivial problem to solve, compared to creating an LLM in the first place.