S1-DeepResearch: Beyond Search, Toward Real-World Long-Horizon Research Agents

The article introduces S1-DeepResearch-32B, a new model designed for long-horizon research tasks that integrates closed-ended question answering with open-ended exploration. It features a unified trajectory construction paradigm that enhances capabilities in knowledge synthesis, complex reasoning, and report generation. Achieving state-of-the-art performance across 20 benchmarks, this model emphasizes the need for a comprehensive approach to developing deep research agents that effectively combine information acquisition and planning strategies, making it a significant advancement for practitioners in the AI research domain.