OpenAI says it has found evidence that Chinese artificial intelligence start-up DeepSeek used the US company’s proprietary models to train its own open-source competitor, as concerns grow over a potential breach of intellectual property.

David Sacks says OpenAI has evidence that Chinese company DeepSeek used a technique called "distillation" to build a rival model.

DeepSeek caused a market tsunami on Monday as investors digested the news that its new R1 model appeared to perform well despite being trained with less sophisticated chips, somet

SoftBank would lead the $40 billion round for the ChatGPT maker, some of which would go to the Stargate AI infrastructure venture.

OpenAI is in talks for an investment round to raise nearly $40 billion that would value the AI startup at up to $340 billion, the Wall Street Journal reported on Thursday.