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Model details
GPT-5.5 represents a significant evolution in model architecture, specifically engineered to function as a capable agent for real-world work. Its design intent centers on moving beyond simple text generation to active task completion, allowing users to delegate messy, multi-part objectives that require planning, tool usage, and iterative self-correction. The model excels at navigating ambiguity across diverse environments, including browser and software operation, making it particularly effective for coding, data analysis, and document creation. By maintaining a focus on agentic reasoning, it is built to handle complex goals that require taking sustained action over time rather than just providing static responses.
The model demonstrates a notable advancement in efficiency, achieving higher intelligence levels while matching the per-token latency of its predecessor. This performance is supported by optimized token usage, particularly in coding tasks, which allows for more fluid interaction during intensive workflows. With strong results on benchmarks like OSWorld and across various professional fields, the model is positioned to support advanced knowledge work and early-stage scientific research. Its ability to operate across tools and manage long-term task execution marks a shift toward more autonomous digital assistance, providing a robust foundation for enterprise-ready applications that require reliable, multi-step reasoning.
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