OpenAI releases GPT-5.5 system card detailing capabilities, limitations, and safety measures for the new model

OpenAI published a technical system card for GPT-5.5, a document that describes what the model can and cannot do, how it was tested, and where it may produce errors or harmful outputs. This transparency move lets developers, researchers, and users understand exactly what they're working with before deploying it.

The system card includes specific benchmarks on the model's strengths (reasoning tasks, coding, multilingual text) and weaknesses (hallucination rates, bias in certain domains, performance gaps on non-English languages), so teams can decide whether GPT-5.5 fits their use case without guessing.

For business teams building products on top of GPT-5.5, this documentation cuts evaluation time—you no longer need to run your own full safety and capability audits from scratch. For researchers and regulators, it sets a precedent: AI companies can publish detailed technical specs rather than treating models as black boxes, making oversight and competition more feasible.