Audio2Face-3D-v2.3.1-Claire

Model Overview

Description:

Audio2Face-3D-v2.3.1-Claire generates 3D facial animations from audio inputs, for use in applications such as video conferencing, virtual reality, and digital content creation. This model is ready for commercial/non-commercial use. For source code, documentation, helper scripts, packaged builds, and links to all components in the Audio2Face-3D technology stack, visit the Audio2Face-3D GitHub repository <br>

License/Terms of Use

Use of this model is governed by the NVIDIA Open Model License <br>

Deployment Geography: Global <br>

Use Case: <br>

Audio2Face-3D-v2.3.1-Claire is designed for developers and researchers working on audio-driven animation and emotion detection applications, such as virtual assistants, chatbots, and affective computing systems. <br>

Release Date: <br>

Hugging Face: 09/24/2025 via https://huggingface.co/nvidia/Audio2Face-3D-v2.3.1-Claire <br>

References(s):

NVIDIA, Audio2Face-3D: Audio-driven Realistic Facial Animation For Digital Avatars, 2025. <br> https://arxiv.org/abs/2508.16401

Model Architecture:

Architecture Type: Transformer, CNN <br> Network Architecture: Wav2vec2.0 <br> Number of model parameters: 3.98x10^7 <br>

Input: <br>

Input Type(s): Audio <br> Input Format: Array of float <br> Input Parameters: One-Dimensional (1D) <br> Other Properties Related to Input: All audio is resampled to 16KHz

Output: <br>

Output Type(s): Facial pose <br> Output Format: Array of float <br> Output Parameters: One-Dimensional (1D) <br> Other Properties Related to Output: Facial pose on skin, tongue, jaw, and eyeballs <br>

Our AI models are designed and/or optimized to run on NVIDIA GPU-accelerated systems. By leveraging NVIDIA’s hardware (e.g. GPU cores) and software frameworks (e.g., CUDA libraries), the model achieves faster training and inference times compared to CPU-only solutions. <br>

Software Integration:

Runtime Engine(s):

• Audio2Face-SDK <br>

Supported Hardware Microarchitecture Compatibility: <br>

• NVIDIA Ampere <br>
• NVIDIA Blackwell <br>
• NVIDIA Hopper <br>
• NVIDIA Lovelace <br>
• NVIDIA Pascal <br>
• NVIDIA Turing <br>

Preferred/Supported Operating System(s):

• Linux <br>
• Windows <br>

The integration of foundation and fine-tuned models into AI systems requires additional testing using use-case-specific data to ensure safe and effective deployment. Following the V-model methodology, iterative testing and validation at both unit and system levels are essential to mitigate risks, meet technical and functional requirements, and ensure compliance with safety and ethical standards before deployment. <br> This AI model can be embedded as an Application Programming Interface (API) call into the software environment described above. <br>

Model Version(s):

Audio2Face-3D-v2.3.1-Claire <br>

Training, Testing, and Evaluation Datasets:

Training Dataset:

Data Modality <br>

• Audio <br>
• 3D facial motion <br>

Audio Training Data Size <br>

• Less than 10,000 Hours <br>

Data Collection Method by dataset <br>

• Human - 3D facial motion data and audio <br>

Labeling Method by dataset <br>

• Human - Commercial capture solution and internal labeling <br>

Properties (Quantity, Dataset Descriptions, Sensor(s)): Audio and 3D facial motion from multiple speech sequences <br>

Testing Dataset:

Data Collection Method by dataset: <br>

• Human - 3D facial motion data and audio <br>

Labeling Method by dataset: <br>

• Human - Commercial capture solution and internal labeling <br>

Properties (Quantity, Dataset Descriptions, Sensor(s)): Audio and 3D facial motion from multiple speech sequences <br>

Evaluation Dataset:

Data Collection Method by dataset: <br>

• Human - 3D facial motion data and audio <br>

Labeling Method by dataset: <br>

• Human - Commercial capture solution and internal labeling <br>

Properties (Quantity, Dataset Descriptions, Sensor(s)): Audio and 3D facial motion from multiple speech sequences <br>

Inference:

Acceleration Engine: TensorRT <br> Test Hardware: <br>

• T4, T10, A10, A40, L4, L40S, A100 <br>
• RTX 6000ADA, A6000, Pro 6000 Blackwell <br>
• RTX 3080, 3090, 4080, 4090, 5090 <br>

Ethical Considerations:

NVIDIA believes Trustworthy AI is a shared responsibility and we have established policies and practices to enable development for a wide array of AI applications. When downloaded or used in accordance with our terms of service, developers should work with their internal model team to ensure this model meets requirements for the relevant industry and use case and addresses unforeseen product misuse.

For more detailed information on ethical considerations for this model, please see the Model Card++ Bias, Explainability, Safety & Security, and Privacy Subcards. Please report model quality, risk, security vulnerabilities or NVIDIA AI Concerns here

Bias

Explainability

Privacy

Safety & Security

Citation

@misc{nvidia2025audio2face3d,
      title={Audio2Face-3D: Audio-driven Realistic Facial Animation For Digital Avatars},
      author={Chaeyeon Chung and Ilya Fedorov and Michael Huang and Aleksey Karmanov and Dmitry Korobchenko and Roger Ribera and Yeongho Seol},
      year={2025},
      eprint={2508.16401},
      archivePrefix={arXiv},
      primaryClass={cs.GR},
      url={https://arxiv.org/abs/2508.16401},
      note={Authors listed in alphabetical order}
}