MiniCPM5–1B: The Best Small LLM Ever

Medium·May 31, 2026·Submitted by Mads Kristian Nylund·41

Overview of OpenBMB's MiniCPM5-1B, a dense 1B-parameter Llama-style model built for local deployment, coding agents, and tool-calling workflows. Covers its 131K-token context window, hybrid think/no-think reasoning mode, broad runtime support (Transformers, vLLM, SGLang, Ollama, llama.cpp, MLX), and its On-Policy Distillation (OPD) training approach that boosts reasoning, code, and instruction-following performance while reducing overlong responses.