OP
OpenBMB
Released September 7, 2026

MiniCPM5-2B

MiniCPM5-2B by OpenBMB is a compact dense MiniCPM5-series LLM with RL post-training, one-prompt deploy/fine-tune Agent Skills and a Persona LoRA Hub.

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Model Overview

Capabilities, design details, and architectural traits

MiniCPM5-2B - a compact dense model in the MiniCPM5 series

MiniCPM5-2B belongs to the MiniCPM5 series from OpenBMB, a line of compact dense LLMs built to push strong performance into small model sizes. The series is shaped by RL post-training.

What most clearly separates the MiniCPM5 series is its packaging around Agent Skills. Two top-level router skills, minicpm5-deploy and minicpm5-finetune, let a user start from a single prompt and get routed to the right backend commands, instead of hand-assembling inference or training setups.

TraitDetail
Series identityMember of the MiniCPM5 series of compact dense LLMs from OpenBMB
Post-trainingDocumented RL post-training
Agent SkillsOne-prompt minicpm5-deploy and minicpm5-finetune router skills, part of a 16-skill set
Deployment targetsCookbooks for transformers, vLLM, SGLang, AWQ, GPTQ, llama.cpp, Ollama, LM Studio and MLX
Fine-tuning pathsCookbooks for TRL, LLaMA-Factory, ms-swift, unsloth and xtuner
Community layerA Persona LoRA Hub with a contributor guide, plus a Desktop Pet concept

One-prompt deployment story

The MiniCPM5 project leads with the idea that a small model should be deployable or fine-tunable from one prompt. The router skills dispatch to the underlying cookbook commands for each backend, so the detailed setup lives below the fold rather than in the user's way.

Persona LoRA Hub

Beyond the base model, the series ships a community Persona LoRA Hub, inviting contributors to build and share persona adapters rather than baking personalities into the model itself.

Benchmark Performance

Independent evaluations · Artificial Analysis

12.5%
Intelligence
14.5%
Coding Index
6.7%
Agentic Index

Accuracy & Capability Details

GPQA - Graduate Science70.2%
Humanity's Last Exam8.9%
SciCode - Scientific Coding26.3%
Long Context Reasoning59.3%

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Evaluate specifications, pricing, and independent benchmark indices

Model Details
General Info
ProviderOpenBMBAnthropicAnthropic
Release DateSeptember 7, 2026September 22, 2026September 28, 2026
Knowledge Cutoff--Jun 2026
Context & Limits
Context Window262K
1M
Best Context Window
1M
Best Context Window
Pricing (per 1M tokens)
Input Pricing
Free
Best Input Pricing
$4$2
Output Pricing
Free
Best Output Pricing
$20$10
Modalities
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Outputs
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Benchmarks (0-100)
Intelligence Index12.5
57.6
Best Intelligence Index
56.0
Coding Index14.5--
Agentic Index6.7--
MiniCPM5-2B
Claude Opus 5.5
Claude Sonnet 5.5

Humanity's Last Exam

Extremely difficult logical reasoning and knowledge.

9%
MiniCPM5-2B
Humanity's Last Exam
Score: 9%
OP
MiniCPM5-2B
61%
Claude Opus 5.5
Humanity's Last Exam
Score: 61%
Claude Opus 5.5
55%
Claude Sonnet 5.5
Humanity's Last Exam
Score: 55%
Claude Sonnet 5.5

Long Context Reasoning

Logical reasoning over long context windows.

59%
MiniCPM5-2B
Long Context Reasoning
Score: 59%
OP
MiniCPM5-2B
85%
Claude Opus 5.5
Long Context Reasoning
Score: 85%
Claude Opus 5.5
83%
Claude Sonnet 5.5
Long Context Reasoning
Score: 83%
Claude Sonnet 5.5

SciCode Benchmark

Scientific coding and mathematical modeling.

26%
MiniCPM5-2B
SciCode Benchmark
Score: 26%
OP
MiniCPM5-2B
67%
Claude Opus 5.5
SciCode Benchmark
Score: 67%
Claude Opus 5.5
61%
Claude Sonnet 5.5
SciCode Benchmark
Score: 61%
Claude Sonnet 5.5

Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.

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