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Open-weight model · Text generation

MiniCPM5-2B-DSpark

by OpenBMB openbmb/MiniCPM5-2B-DSpark

MiniCPM5-2B-DSpark is an open-weight model for text generation from OpenBMB, released under Apache License 2.0. It has 324M parameters and a 131,072-token context. At 16-bit it needs about 0.8 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 1M downloads a month.

English | MiniCPM5-2B-DSpark is a DSpark draft checkpoint trained for exact pairing with MiniCPM5-2B and its tokenizer. Training responses were generated by MiniCPM5-2B from a mixture of general-domain, mathematics, and code prompts.

Parameters324M
Context131,072
Weights647.6 MB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads1M

Runs On

What it takes to serve MiniCPM5-2B-DSpark (324M 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 0.6 GB 0.8 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.3 GB 0.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.2 GB 0.2 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 12, 2026.

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

Model Card

By OpenBMB, published under apache-2.0, revision 114a20fdbf53.

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

English | 中文

MiniCPM5-2B-DSpark

MiniCPM5-2B-DSpark is a DSpark draft checkpoint trained for exact pairing with MiniCPM5-2B and its tokenizer.

Model Specification

Property Value
Target model MiniCPM5-2B
Draft layers 5
Draft parameters 323,776,001
Draft tokens per forward pass 7
Target hidden-state layers [1, 10, 20, 30, 39]
Checkpoint precision BF16

Training Recipe

Training responses were generated by MiniCPM5-2B from a mixture of general-domain, mathematics, and code prompts.

Setting Value
Training sequences 1,959,525
Training tokens 7,054,154,509
Epochs 6
Maximum sequence length 12,288
Optimizer AdamW
Objective CE + L1 + confidence loss

Evaluation

Acceptance length is defined as the total number of completion tokens divided by the total number of speculative verification steps. Evaluation uses natural EOS termination and max_new_tokens=4096.

Domain T=0 T=1.0
Math 6.0496 4.6050
Code 6.1106 4.4381
General 4.1585 3.0997
Aggregate 5.5174 4.0514

Usage with SGLang

Read the full model card (341 words)

Configuration

Architecture
Qwen3DSparkModel
Context length (tokens)
131,072
Layers
5
Hidden size
2,048
Feed-forward size
6,144
Attention heads
16
Key/value heads
2
Head dimension
128
Vocabulary size
130,560
Model type
qwen3

Identity and Version

Repository
openbmb/MiniCPM5-2B-DSpark
Publisher
OpenBMB
Task
Text generation
Modality
Text
Library
transformers
Parameters
324M parameters
Languages
en, zh
Revision
114a20fdbf53220712c7fbdd7dccddbf1dedebb4
First published
2026-09-06
Last updated
2026-09-06

Files and Weights

4 files, 647.6 MB in total. The weights are 1 file totalling 647.6 MB in safetensors.

Weights1 file · 647.6 MB
Configuration1 file · 1.4 KB
Documentation1 file · 4.1 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights647.6 MB ae9ff4a8c944
config.jsonConfiguration1.4 KB —
README.mdDocumentation4.1 KB —
.gitattributesRepository1.5 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
647.6 MB
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:2607.05147
  • 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 published647.6 MB
16-bit0.6 GB
8-bit0.3 GB
4-bit0.2 GB

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

Questions About MiniCPM5-2B-DSpark

How much GPU memory does MiniCPM5-2B-DSpark need?

About 0.8 GB at 16-bit and 0.2 GB at 4-bit: the weights (324M parameters) plus a working margin. A long context needs more.

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

Yes. MiniCPM5-2B-DSpark 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-DSpark's context length?

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

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