This episode of Fact Fragment synthesizes insights from three groundbreaking technical reports on advanced AI models and reasoning. We examine DeepSeek-R1’s novel reinforcement learning approach that yields remarkable “aha moments” (DeepSeek-R1, 2025), analyze Meta’s Llama 3 with its extended context windows and robust safety features (Llama 3, 2024), and delve into OpenAI’s O3 model that exemplifies high-performance reasoning at significant computational cost (OpenAI O3, 2024). Discover how these innovations are bridging the gap between open and closed models and revolutionizing real-world applications.