Four years ago, I did an analysis of the open source ML ecosystem. Since then, the landscape has changed, so I revisited the topic. This time, I focused exclusively on the stack around foundation models. The full list of open source AI repos is hosted at llama-police. The list is updated every 6 hours. Table of contents Data …. How to add missing repos The New AI Stack …. AI stack over time …….. Applications …….. AI engineering …….. Model development …….. Infrastructure Open source AI developers...