This episode of The Circuit discusses the recent trend of companies developing their own custom CPUs and accelerators for AI workloads. Google, Amazon, and Microsoft have all announced their own custom chips, while Facebook and Marvell are also entering the custom chip market. The conversation also touches on the challenges and trade-offs of custom silicon, the impact on NVIDIA, and the difficulty of accurately sizing the AI market. The hosts highlight the uncertainty surrounding the future of AI outsourcing and the potential shift in the fortunes of the semiconductor and cloud industries.