Sources: OpenAI is weighing legal action against Apple after expectations that ChatGPT's Siri integration would generate billions in revenue fell short (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg: Sources: OpenAI is weighing legal action against Apple after expectations that ChatGPT's Siri integration would generate billions in revenue fell short — Apple Inc.'s two-year-old partnership with OpenAI has become strained, according to people familiar with the matter …