Nanbeige/Nanbeige4.1-3B

Nanbeige4.1-3B is a 3 billion parameter model developed by Chen Yang et al. (as per the technical report authors) that builds upon Nanbeige4-3B-Base, optimized through SFT and RL. This compact model is designed to simultaneously achieve robust reasoning, strong preference alignment, and effective agentic behaviors. It excels at solving complex, multi-step problems and supports deep-search tasks with extensive tool invocations, filling a gap for small general models that perform well in both reasoning and agentic scenarios.