AI models are typically run in isolated "sandboxes" during cybersecurity tests to block access to external information and assess their ability to solve problems independently. Kimi K3 bypassed one such sandbox, allowing it to access information beyond the test environment, U.S.-based cybersecurity research firm Frontier Security said.

Frontier finds another AI model has followed OpenAI in breaking out of sandbox.

Security researchers say that Kimi K3, an open-weight model from China, wandered off to the internet in an attempt to cheat on a test it was given.