Anthropic's artificial intelligence model Claude "gained unauthorized access" to three outside organizations on three separate occasions during testing that was supposed to keep them away from "real-world" systems, the company said on Thursday. The announcement comes just days after rival OpenAI first revealed that its models improperly accessed the internet and went rogue during security testing. Anthropic evaluated more than 141,000 "evaluation runs" and found that three different versions of its model Claude improperly accessed the systems of three unnamed organizations. And in a public letter released earlier this week, more than 1,000 AI staffers across leading firms called for the industry to be more tightly regulated. Under the framework, developers such as OpenAI, Anthropic and Google would give the government access to their most powerful models for up to 30 days before planned release.