GPT-5.5 Is Out — What Makes It Different?

On April 23, OpenAI officially released GPT-5.5. This launch is not simply about saying the model is "smarter." The focus is on putting it into more concrete work scenarios: writing code, researching information, analyzing data, organizing documents, operating software, and assisting with scientific research. In other words, OpenAI wants GPT-5.5 to feel more like a work assistant that can move tasks forward, not just a large language model that chats and writes copy. 1. What OpenAI said: a model