As someone who spent about 2 years working in AI training and use AI just about every day in my current line of work (although all of my Substack articles are human-written, with the occasional assist from AI in copyediting and grammar), I don’t profess to be an AI expert in terms of the ML and AI science side of things (most of my work here was in writing, editing, and project management), but I have been staying on top of what’s happening with DeepSeek.