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Mini toolsMiniCPM5 1B
By OpenBMB
MiniCPM5-1B is the first checkpoint in OpenBMB’s MiniCPM5 series, released under Apache 2.0. It is a dense 1.08B-parameter causal language model designed for local deployment, on-device assistants, coding agents, tool-use workflows, and reasoning scenarios where a compact model is preferred. The model uses a standard LlamaForCausalLM architecture, supports a 131,072-token context length, and includes hybrid reasoning through Think and No Think modes in the same checkpoint. OpenBMB positions it as strong within the 1B open-source class, especially for agentic tool use, code generation, and difficult reasoning.
New
Multimodal
Gen 3
Overview
MiniCPM5-1B is OpenBMB’s open-source 1B causal language model for on-device local assistants, coding agents, tool use, and compact reasoning.
About OpenBMB
OpenBMB is short for Open Lab for Big Model Base. The goal of OpenBMB is to build the model base and toolkit for large-scale pre-trained language models.
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Last updated: May 26, 2026
