GPT-5.5 Released: The Return of the King, Crushing Anthropic

In the early hours of April 24, 2026, OpenAI officially released GPT-5.5 without any prior warning, sending shockwaves through the AI community. I would venture to call it the most powerful model on the planet (though the price tag is equally "impressive"). As they say, you get what you pay for. Below is a deep dive into GPT-5.5 and the areas where it truly excels. Agentic Programming and Autonomous Computer Use GPT-5.5 shows significant progress in agentic programming. It shattered records in the Terminal-Bench 2.0 test with a score of 82.7.