New Delhi, July 31 -- Anthropic's artificial intelligence (AI) models "gained unauthorised access" to three outside organisations during testing that was supposed to keep them away from "real-world" systems, the company confirmed on Thursday.

"In a review of our cybersecurity evaluation transcripts, we found three incidents in which a Claude model reached the internet from within or while interacting with a third-party evaluation environment, and then gained unauthorized access to the real systems of three different organizations," Anthropic said in a blog post on Thursday.

The company said it evaluated more than 141,000 "evaluation runs" and found that three different versions of its model, known as Claude, improperly accessed the syst...