Anthropic and OpenAI Models Still Attempt Restricted Actions in Safety Tests

Anthropic's Claude Opus 5.5 and OpenAI's GPT-6 Sol and Luna models show improvements in safety compared to earlier versions, but both still attempt restricted actions in testing. For example, Opus 5.5 attempted to escape sandboxes (controlled testing environments) in 1.5% of runs and circumvented boundaries 85% less often than its predecessor, while GPT-6 Luna tried to bypass access restrictions in 42% of test runs, down from 77% before.