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Open-weight model · Text generation

MiniCPM5-2B

by OpenBMB openbmb/MiniCPM5-2B

MiniCPM5-2B is an open-weight model for text generation from OpenBMB, released under Apache License 2.0. It has 2.5B parameters and a 131,072-token context. At 16-bit it needs about 6 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 1.2M downloads a month.

English | We are releasing MiniCPM5-2B, the second model in the MiniCPM5 series, following MiniCPM5-1B.

Parameters2.5B
Context131,072
Weights5.0 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads1.2M

Runs On

What it takes to serve MiniCPM5-2B (2.5B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 5.0 GB 6.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 2.5 GB 3.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 1.3 GB 1.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 7, 2026.

MiniCPM5-2B on every accelerator the SAVRN Index prices, at every precision

Model Card

By OpenBMB, published under apache-2.0, revision f97400052a43.

MiniCPM Tech Report | MiniCPM Wiki(Chinese) | GitHub Repo | UltraData | Online Demo

English | 中文

Highlights

We are releasing MiniCPM5-2B, the second model in the MiniCPM5 series, following MiniCPM5-1B. It is a dense 2B Transformer that scales up the same training recipe, built for on-device, local deployment, and resource-constrained scenarios, reaching 2B-class open-source SOTA.

2B-class open-source SOTA: compared with strong open-source models of similar size, MiniCPM5-2B achieves SOTA performance within this comparison set. It remains competitive with 4B-class models overall, while showing its advantages over models of comparable size in coding, mathematics, long-context understanding, tool use, and agentic tasks.

Read the full model card (2,680 words)

Configuration

Architecture
LlamaForCausalLM
Context length (tokens)
131,072
Layers
42
Hidden size
2,048
Feed-forward size
6,144
Attention heads
16
Key/value heads
2
Head dimension
128
Vocabulary size
130,560
RoPE base
5,000,000
Stored precision
bfloat16
Model type
llama

Identity and Version

Repository
openbmb/MiniCPM5-2B
Publisher
OpenBMB
Task
Text generation
Modality
Text
Library
transformers
Parameters
2.5B parameters
Languages
en, zh
Revision
f97400052a43d642bbc6e9975e2397e3ae6a6b52
First published
2026-09-06
Last updated
2026-09-29

Files and Weights

11 files, 5.0 GB in total. The weights are 1 file totalling 5.0 GB in safetensors.

Weights1 file · 5.0 GB
Configuration4 files · 32.8 KB
Tokenizer2 files · 10.0 MB
Documentation2 files · 222.5 KB
Other1 file · 5.4 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model-00000-of-00001.safetensorsWeights5.0 GB 14fb8e7f0a18
config.jsonConfiguration704 B —
generation_config.jsonConfiguration213 B —
model.safetensors.index.jsonConfiguration31.4 KB —
special_tokens_map.jsonConfiguration551 B —
README-cn.mdDocumentation110.3 KB —
README.mdDocumentation112.2 KB —
chat_template.jinjaOther5.4 KB —
.gitattributesRepository1.5 KB —
tokenizer.jsonTokenizer9.9 MB —
tokenizer_config.jsonTokenizer94.4 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
5.0 GB
Download from OpenBMB

Released by OpenBMB through its official repository on Hugging Face. Read the license.

Built From

  • Described by arXiv:2506.07900
  • Described by arXiv:2602.09003
  • Trained on (disclosed) openbmb/Ultra-FineWeb
  • Trained on (disclosed) openbmb/Ultra-FineWeb-L3
  • Trained on (disclosed) openbmb/UltraData-Code
  • Trained on (disclosed) openbmb/UltraData-Math
  • Trained on (disclosed) openbmb/UltraData-RL-2609
  • Trained on (disclosed) openbmb/UltraData-SFT-2605
  • Trained on (disclosed) openbmb/UltraData-SFT-Agent-2609
  • Trained on (disclosed) openbmb/UltraX-Preview

Memory Requirements

PrecisionWeights in memory
As published5.0 GB
16-bit5.0 GB
8-bit2.5 GB
4-bit1.3 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Built on This Model

Questions About MiniCPM5-2B

How much GPU memory does MiniCPM5-2B need?

About 6 GB at 16-bit and 1.5 GB at 4-bit: the weights (2.5B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run MiniCPM5-2B on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use MiniCPM5-2B commercially?

Yes. MiniCPM5-2B is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is MiniCPM5-2B's context length?

131,072 tokens, from the maximum position embeddings in its published configuration.

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