GPT-5.5 Instant System Card

OpenAI has published a System Card for its GPT-5.5 model, detailing the model's capabilities, safety evaluations, and recommended usage guidelines. According to the OpenAI Blog, this release continues the company's practice of transparently documenting model behavior and risks before broader deployment. The System Card covers performance benchmarks, limitations in reasoning and factuality, and mitigation measures for potential misuse. For developers building AI-powered workflows, the card provides essential insights into where GPT-5.5 excels—such as complex task automation and multi-step reasoning—and where caution is needed, such as in high-stakes decisions without human oversight. The document also outlines the model's training data, evaluation methodology, and comparison with previous versions, enabling informed integration into production systems. This release underscores OpenAI's commitment to responsible AI deployment, giving builders the technical details needed to craft robust applications while remaining aware of safety boundaries.