OpenAI has published a system card detailing the comprehensive security measures implemented for the GPT-5.1-Codex-Max system. The document focuses on the protection methodology, dividing it into two key areas: the model level and the product level.

At the model level, developers applied specialized training to neutralize harmful tasks and attacks via prompt injection. The product level includes mechanisms such as isolating agents in a sandbox and enabling flexible configuration of network access.

These steps aim to create a controlled code execution environment where potential risks are limited by architectural solutions before they can impact external systems or data.