🔥 News

• 2026.02.12 - We have released the SoulX-FlashHead, which is a streaming talking head project that achieves real-time performance on consumer GPUs (e.g., RTX 4090/5090).
• 2026.01.08 - We have released the inference code, and the model weights.
• 2025.12.30 - We released Project page on SoulX-FlashTalk.
• 2025.12.30 - We released SoulX-FlashTalk Technical Report on Arxiv and GitHub repository.

🤫 Coming soon

A 4-GPU real-time version of SoulX-FlashTalk.

📑 Todo List

• Technical report
• Project Page
• Inference code
• Checkpoint release
• Online demo

📢 Live Streaming & Video Podcast

🎬 Online Demos

🌰 Examples

📖 Quickstart

🔧 Installation

1. Create a Conda environment

conda create -n flashtalk python=3.10
conda activate flashtalk

2. Install PyTorch on CUDA

pip install torch==2.7.1 torchvision==0.22.1 --index-url https://download.pytorch.org/whl/cu128

3. Install other dependencies

pip install -r requirements.txt

4. Flash-attention installation:

pip install ninja
pip install flash_attn==2.8.0.post2 --no-build-isolation

5. FFmpeg installation

# Ubuntu / Debian
apt-get install ffmpeg
# CentOS / RHEL
yum install ffmpeg ffmpeg-devel

or

# Conda (no root required) 
conda install -c conda-forge ffmpeg==7

🤗 Model download

Model Component	Description	Link
SoulX-FlashTalk-14B	Our 14b model	🤗 Huggingface
chinese-wav2vec2-base	chinese-wav2vec2-base	🤗 Huggingface

# If you are in china mainland, run this first: export HF_ENDPOINT=https://hf-mirror.com
pip install "huggingface_hub[cli]"
huggingface-cli download Soul-AILab/SoulX-FlashTalk-14B --local-dir ./models/SoulX-FlashTalk-14B
huggingface-cli download TencentGameMate/chinese-wav2vec2-base --local-dir ./models/chinese-wav2vec2-base

🚀 Inference

# Infer on single GPU
# Requires more than 64G of VRAM. Use --cpu_offload to reduce VRAM usage to 40G.
bash inference_script_single_gpu.sh

# Infer on multy GPUs
# Real-time inference speed can only be supported on 8xH800 or higher graphics cards
bash inference_script_multi_gpu.sh

👋 Online Demo

Coming Soon!

📧 Contact Us

If you are interested in leaving a message to our work, feel free to email le.shen@mail.dhu.edu.cn or qiaoqian@soulapp.cn or yutan@soulapp.cn or zhouke@soulapp.cn or liusiyuan@soulapp.cn

Due to Group 1 reaching its capacity, we have opened a new WeChat group. Additionally, we represent SoulApp and warmly welcome everyone to download the app and join our Soul group for further technical discussions and updates!

📚 Citation

If you find our work useful in your research, please consider citing:

@misc{shen2025soulxflashtalk,
  title = {{SoulX-FlashTalk}: Real-Time Infinite Streaming of Audio-Driven Avatars via Self-Correcting Bidirectional Distillation},
  author = {Shen, Le and Qiao, Qian and Yu, Tan and Zhou, Ke and Yu, Tianhang and Zhan, Yu and Wang, Zhenjie and Tao, Ming and Yin, Shunshun and Liu, Siyuan},
  year = {2025},
  eprint = {2512.23379},
  archivePrefix = {arXiv},
  primaryClass = {cs.CV},
  doi = {10.48550/arXiv.2512.23379},
  url = {https://arxiv.org/abs/2512.23379}
}

🙇 Acknowledgement

• Infinitetalk and Wan: the base model we built upon.
• Self forcing: the codebase we built upon.
• DMD and Self forcing++: the key distillation technique used by our method.

💡 Star History