GPT-5.4 Thinking System Card

The GPT-5.4 Thinking System Card details the architecture and capabilities of the latest iteration of the GPT model series. It introduces a model size of 175 billion parameters, improved contextual understanding, and enhanced reasoning capabilities through a new multi-stage processing architecture. This release is significant for practitioners as it provides insights into optimizing large language models for complex tasks, potentially improving performance in applications requiring advanced cognitive functions.