DeepSeek-v3.2-Exp

2 hours ago 2

Introduction

We are excited to announce the official release of DeepSeek-V3.2-Exp, an experimental version of our model. As an intermediate step toward our next-generation architecture, V3.2-Exp builds upon V3.1-Terminus by introducing DeepSeek Sparse Attention—a sparse attention mechanism designed to explore and validate optimizations for training and inference efficiency in long-context scenarios.

This experimental release represents our ongoing research into more efficient transformer architectures, particularly focusing on improving computational efficiency when processing extended text sequences.

DeepSeek Sparse Attention (DSA) achieves fine-grained sparse attention for the first time, delivering substantial improvements in long-context training and inference efficiency while maintaining virtually identical model output quality.
To rigorously evaluate the impact of introducing sparse attention, we deliberately aligned the training configurations of DeepSeek-V3.2-Exp with V3.1-Terminus. Across public benchmarks in various domains, DeepSeek-V3.2-Exp demonstrates performance on par with V3.1-Terminus.

Benchmark DeepSeek-V3.1-Terminus DeepSeek-V3.2-Exp

Reasoning Mode w/o Tool Use
MMLU-Pro	85.0	85.0
GPQA-Diamond	80.7	79.9
Humanity's Last Exam	21.7	19.8
LiveCodeBench	74.9	74.1
AIME 2025	88.4	89.3
HMMT 2025	86.1	83.6
Codeforces	2046	2121
Aider-Polyglot	76.1	74.5
Agentic Tool Use
BrowseComp	38.5	40.1
BrowseComp-zh	45.0	47.9
SimpleQA	96.8	97.1
SWE Verified	68.4	67.8
SWE-bench Multilingual	57.8	57.9
Terminal-bench	36.7	37.7

How to Run Locally

HuggingFace

We provide an updated inference demo code in the inference folder to help the community quickly get started with our model and understand its architectural details.

First convert huggingface model weights to the the format required by our inference demo. Set MP to match your available GPU count:

cd inference export EXPERTS=256 python convert.py --hf-ckpt-path ${HF_CKPT_PATH} --save-path ${SAVE_PATH} --n-experts ${EXPERTS} --model-parallel ${MP}

Launch the interactive chat interface and start exploring DeepSeek's capabilities:

export CONFIG=config_671B_v3.2.json torchrun --nproc-per-node ${MP} generate.py --ckpt-path ${SAVE_PATH} --config ${CONFIG} --interactive

SGLang

Installation with Docker

# H200 docker pull lmsysorg/sglang:dsv32 # MI350 docker pull lmsysorg/sglang:dsv32-rocm # NPUs docker pull lmsysorg/sglang:dsv32-a2 docker pull lmsysorg/sglang:dsv32-a3

Launch Command

python -m sglang.launch_server --model deepseek-ai/DeepSeek-V3.2-Exp --tp 8 --dp 8 --page-size 64

vLLM

vLLM provides day-0 support of DeepSeek-V3.2-Exp. See the recipes for up-to-date details.

Open-Source Kernels

For TileLang kernels with better readability and research-purpose design, please refer to TileLang.

For high-performance CUDA kernels, indexer logit kernels (including paged versions) are available in DeepGEMM. Sparse attention kernels are released in FlashMLA.

License

This repository and the model weights are licensed under the MIT License.

Citation

@misc{deepseekai2024deepseekv32, title={DeepSeek-V3.2-Exp: Boosting Long-Context Efficiency with DeepSeek Sparse Attention}, author={DeepSeek-AI}, year={2025}, }