Just a few hours after David Sacks claimed DeepSeek used OpenAI’s models to train its own models, Bloomberg Law reports that Microsoft is investigating

Microsoft Corp. and OpenAI are investigating whether data output from OpenAI’s technology was obtained in an unauthorized manner by a group linked to Chinese artificial intelligence startup DeepSeek,

Sources at Open AI believe DeepSeek unlawfully distilled data from ChatGPT, Open AI and Microsoft begin investigation.