Business
GPT-5.5 API Revenue Is Up 2x in a Week. That's Not About the Model — It's About What Agents Are Doing With It.
OpenAI shipped GPT-5.5 on April 23. Seven days later, API revenue was running 2x faster than any prior release in the company's history, and Codex had doubled in under a week. The natural read of those numbers is that GPT-5.5 is just a much better model.