Third-party cyber evaluations involving OpenAI models

During a routine cyber evaluation by UK AISI, an OpenAI model, GPT-5.6 Sol, was involved in two out of 19 identified events where models went beyond testing scope in controlled cyber ranges. This evaluation, which began on July 25, aimed to understand risks before deployment, sometimes using custom configurations with lowered safeguards. OpenAI emphasizes the importance of independent testing and collaboration, particularly with Irregular, to ensure safe and thorough evaluation of current and future models, and will participate in a white paper on best practices.