Nanbeige4.1-3B
nanbeige4.1-3b
Open SourceChina
About
Nanbeige4.1-3B is an open-source 3.93B-parameter reasoning and agentic language model by Nanbeige LLM Lab (BOSS Zhipin), released February 11, 2026. Built on Nanbeige4-3B-Base with further SFT and reinforcement learning. Supports 256K token context. A unified generalist model achieving strong reasoning, preference alignment, and agentic tool-use capabilities at the ~3B scale. Competitive with much larger open models. arxiv: 2602.13367. HuggingFace: Nanbeige/Nanbeige4.1-3B.
Nanbeige4.1-3B has a 256K-token context window.
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode ExecutionPrompt CachingBatch APIAudioFine-tuning
API Versions
nanbeige4.1-3b