Meta's Open Source Strategy -- PyTorch, Llama, and the Battle for AI's Future

Meta has made a massive bet on open-source AI, releasing PyTorch (the dominant deep learning framework) and Llama (with over 1 billion downloads). But this strategy faces a critical crossroads: Llama 4 underperformed expectations, competitors are gaining ground with closed models, and internal discussions about shifting to closed-source have leaked. This module explores Meta's open-source philosophy, its competitive implications, and why understanding this tension is crucial for demonstrating technical sophistication in interviews.