Introducing GPT-5.5: OpenAI's Next-Generation AI Model OpenAI has launched GPT-5.5, its most advanced and intuitive model to date, marking a significant leap in artificial intelligence capabilities. Designed to streamline complex tasks, GPT-5.5 excels in areas such as coding, research, data analysis, and tool integration, enabling users to delegate multi-step workflows with minimal oversight. The model’s ability to autonomously plan, execute, and refine tasks has been highlighted as a breakthrough in agentic AI, where reasoning across contexts and sustained action are critical. Key improvements in GPT-5.5 include enhanced efficiency, with the model achieving higher performance while using fewer tokens compared to its predecessor, GPT-5.4. This efficiency is particularly notable in coding tasks, where GPT-5.5 outperforms previous models in both speed and accuracy. For instance, on Terminal-Bench 2.0—a test measuring complex command-line workflows requiring planning and tool coordination—GPT-5.5 achieved an accuracy of 82.7%, surpassing earlier benchmarks. Similarly, on SWE-Bench Pro, which evaluates real-world GitHub issue resolution, the model reached 58.6%, solving more tasks in a single pass than previous iterations. OpenAI emphasized that GPT-5.5’s coding strengths extend beyond benchmark tests. Early testing suggests it can handle engineering work ranging from implementation and refactoring to debugging, testing, and validation. The model’s ability to maintain context across large systems, reason through ambiguous failures, and check assumptions with tools has been praised by developers. For example, Dan Shipper, founder of Every, described GPT-5.5 as “the first coding model I’ve used that has serious conceptual clarity.#openai #gpt55 #terminalbench_20 #swebench_pro #dan_shipper
