A federal judge has rejected xAI's attempt to hold OpenAI liable for allegedly poaching employees to steal trade secrets. US District Judge Rita F. Lin ruled that xAI failed to provide evidence that OpenAI induced any of its former employees to misappropriate confidential information or that the company actually received and used xAI's trade secrets.

Lin's order highlighted that while two employees admitted to downloading xAI's source code and taking confidential recordings, xAI couldn't prove OpenAI benefited from this alleged theft. The judge noted that some employees were accused of retaining less consequential data like work chats, while others never had access to the confidential information xAI claimed was being targeted. Lin allowed xAI to amend its complaint but emphasized the fundamental requirement under the Defend Trade Secrets Act.

This ruling represents a significant setback for xAI's lawsuit, which Elon Musk has framed as part of an ongoing campaign against OpenAI. Commercial litigator Sarah Tishler told Ars that the decision reinforces a core principle of trade secret law: hiring from competitors isn't equivalent to stealing trade secrets. The decision provides clarity for AI companies navigating talent acquisition in an industry where skilled engineers are highly mobile and competition for expertise is intense.