Anthropic says AI models hacked three firms during tests

US tech company Anthropic says three of its artificial intelligence (AI) models hacked three organisations during tests, just days after its rival OpenAI said rogue AI agents had attacked the networks of other firms.

During a cybersecurity exercise, Anthropic's Claude AI model gained unauthorised access to systems by connecting to the internet from isolated test environments, it said on Thursday.

Anthropic said it discovered the incidents after reviewing more than 140,000 tests following OpenAI's disclosure on 21 July that its agents had hacked another AI company, Hugging Face.

Anthropic urged other AI labs to perform similar reviews to better understand the risks of their models' capabilities.

The San Francisco-based firm also said it has alerted the three companies that were hacked about the incidents.

Anthropic said in a statement, external that it is "approaching the fixes as if the responsibility were ours alone."