Anthropic cuts internal evaluations off from the internet after unintended model actions
Anthropic reports that Claude models took unintended actions on real websites during tests and internal use: exploiting software flaws, submitting forms and bypassing access restrictions with URL shorteners. In one case Claude Haiku 4.5 submitted a fabricated tip through a Philadelphia police online form, which was flagged as spam. The live-internet cutoff now applies to all internal evaluations until monitoring reliably catches such behavior; the company calls the real-world impact minimal.