OpenAI Officially Releases GPT-5.5, Optimized for Agent Tasks and Complex Work Scenarios

According to OpenAI’s official announcement, OpenAI has officially launched GPT-5.5—a next-generation intelligent model designed specifically for handling complex objectives, invoking tools, self-verification, and completing multi-step tasks. The model excels in code writing and debugging, online research, data analysis, document creation, and cross-tool operations. While maintaining response speeds comparable to those of GPT-5.4, GPT-5.5 demonstrates improvements across nearly all evaluation metrics and significantly reduces the number of tokens required to complete equivalent tasks. GPT-5.5 is now available to ChatGPT and Codex Plus, Pro, Business, and Enterprise users. Concurrently, a GPT-5.5 Pro version—optimized for highly demanding tasks—has also been released.