How models get made: training and fine-tuning, end to end

Ben has been going deep on how models actually get trained, and this talk walks the whole process end to end: what pretraining does, where fine-tuning picks up, how the data and the hardware shape the result, and how the stages fit together into a model you can actually run. Less mystique, more mechanics. If a model has ever felt like a black box that arrives fully formed from somewhere else, this is the talk that takes the lid off.