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Nanbeige LLM Lab·Feb 12, 2026·v4.1-3B·open source

Nanbeige4.1-3B

Nanbeige4.1-3B is an enhanced iteration of the Nanbeige4-3B-Base model, achieved through further post-training optimization with supervised fine-tuning (SFT) and reinforcement learning (RL). This model demonstrates strong reasoning capabilities, robust preference alignment, and effective agentic behaviors, making it a competitive open-source model at a small parameter scale.

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overview

Nanbeige4.1-3B is an enhanced iteration of the Nanbeige4-3B-Base model, achieved through further post-training optimization with supervised fine-tuning (SFT) and reinforcement learning (RL). This model demonstrates strong reasoning capabilities, robust preference alignment, and effective agentic behaviors, making it a competitive open-source model at a small parameter scale.

key features
  • 01Strong reasoning capabilities
  • 02Robust preference alignment
  • 03Effective agentic behaviors
  • 04Superior performance on general reasoning tasks
  • 05Native support for deep-search tasks
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