You can download the model then run the inference scipts in https://github.com/Alibaba NLP/WebAgent. WebSailor is a complete post training methodology designed to teach LLM agents sophisticated reasoning for complex web navigation and information seeking tasks. It addresses the challenge of extreme uncertainty in vast information landscapes, a capability where previous open source models lagged behind proprietary systems. We classify information seeking tasks into three difficulty levels, where Level 3 represents problems with both high uncertainty and a complex, non linear path to a solution. To generate these challenging tasks, we introduce SailorFog QA , a novel data synthesis pipeline that constructs intricate knowledge graphs and then applies information obfuscation. This process creates questions with high initial uncertainty that demand creative exploration and transcend simple, structured reasoning patterns. Our training process begins by generating expert trajectories and then reconstructing the reasoning to create concise, action oriented supervision signals, avoiding the stylistic and verbosity issues of teacher models. The agent is first given a "cold start" using rejec…
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