GPT-5.5 System Card

OpenAI has published the GPT-5.5 System Card, detailing the architecture, training data, safety evaluations, and performance benchmarks for its latest large language model. According to the OpenAI Blog, GPT-5.5 shows improvements in reasoning, factual accuracy, and adherence to safety guidelines compared to its predecessor. The system card also discloses limitations, including potential biases and areas where the model may still produce incorrect or harmful outputs. For developers and solopreneurs building AI workflows, this document provides critical information for assessing whether GPT-5.5 fits their use cases, how to mitigate risks, and what API parameters to expect. The card outlines new capabilities in coding, data analysis, and long-context understanding, which could streamline integration into automated pipelines. However, it also emphasizes the need for rigorous testing and human oversight, especially for high-stakes applications. This release underscores the growing trend of transparency in AI development, as model providers increasingly publish detailed technical reports to support informed adoption.