Apple's OpenAI lawsuit follows months of simmering tensions and highlights OpenAI's hardware chief Tang Tan's strained relationship with former boss John Ternus (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg:
Apple's OpenAI lawsuit follows months of simmering tensions and highlights OpenAI's hardware chief Tang Tan's strained relationship with former boss John Ternus  —  When iPhone engineer Chang Liu quit for a job at OpenAI's nascent hardware division, Apple Inc. says he left with more than just years of experience.