In this episode of Last Week in AI, hosts Andrey Kurenkov and Jeremy Harris explore recent AI advancements including OpenAI's release of GPT 4.0 Mini and Mistral’s open-source models, covering their impacts on affordability and performance. They delve into enterprise tools for compliance, text-to-video models like Hyper 1.5, and YouTube Music enhancements. The conversation further addresses AI research topics such as the benefits of numerous small expert models, novel benchmarking techniques, and advanced AI reasoning. Policy issues including U.S. export controls on AI technology to China and internal controversies at OpenAI are also discussed, alongside Elon Musk's supercomputer ambitions and OpenAI’s Prover-Verify Games initiative.