OpenFold3

Powering Biology AI With Open Science

And a global consortium of industry and academic partners

SandboxAQ and the OpenFold Consortium Launch OpenFold3

Fully Open-Source Frontier AI for Structure-aware Drug Discovery

The OpenFold Consortium has announced the release of OpenFold3, the most extensively trained open-source co-folding model ever created, and a major leap forward for democratizing in silico biomolecular structure prediction.

Built by a global network of researchers, and with SandboxAQ as a key contributor, OpenFold3 accurately predicts the 3D structures of proteins and their interactions with other molecules, from small-molecule drugs, antibodies, other proteins, or nucleic acids, enabling faster, more cost-effective, and more precise discovery of new therapeutics. 

OpenFold 3 brings state-of-the-art, open-source co-folding AI to every researcher worldwide, matching the performance of the Nobel-recognized AlphaFold 3 while remaining fully open and accessible.

The Most Extensively Trained Cofolding AI

now available free and open-sourced for everyone!

40 Million

Synthetic structures and 300K publicly available, experimental structures

40 Million

CPU hours for data generation

5 Million

GPU hours beyond model training

Apache 2.0
Permissive open source license

Reimagining the Future of Drug Discovery

See Biology
In-silico

Accelerate Molecular Design

Discover Better Medicines

Drug discovery depends on understanding how a protein binds to other molecules. Proteins are large sequences of amino acids folded in a three-dimensional space. The 3D folded structure of the protein dictates its functionality, and the co-folded structure of a protein and a candidate drug molecule determines whether a potential treatment will succeed or fail.

Until now, obtaining these structures experimentally has been slow, expensive, and complex. OpenFold3 changes that. 

OpenFold3 is a co‑folding model that predicts the structure of a protein bound to another molecule, such as a small‑molecule drug, an antibody, another protein, or a nucleic acid. These structures are essential to design effective, specific therapies.

SandboxAQ: Advancing the Frontier of Molecular AI

As both a core member and key technical contributor of the OpenFold Consortium, SandboxAQ has been instrumental in the conception, development, and optimization of OpenFold3.

Built at the intersection of AI modeling, computational chemistry, and NVIDIA DGX infrastructure, our team engineered robust molecular AI systems designed for openness and scale. We conducted large-scale model training, systematic ablation studies, and performance optimization to push the limits of predictive accuracy. Every component, from code to compute, is designed for reproducibility, transparency, and impact across the global scientific community.

For more information:

“SandboxAQ’s significant contributions have greatly enhanced the development and capabilities of OpenFold3, raising the bar for what’s possible with AI-powered in silico drug development.”

Dr. Woody Sherman, CEO & Founder, Psivant; Executive Member, OpenFold Consortium

Build with OpenFold3 

OpenFold3 is now available fully open-sourced under the permissive Apache 2.0 license on GitHub and Hugging Face for academic and industry researchers and developers globally. A GPU-optimized, containerized and streamlined inference microservice is available as a NIM through the Nvidia BioNemo platform for scalable workflows.

Explore OpenFold3 through:

OpenFold3 Launch Webinar

with Nvidia and the OpenFold Consortium

December 10, 2025  |  11:00 AM PT / 2:00 PM ET

Learn how OpenFold3, Nvidia and SandboxAQ’s AI simulation technologies are transforming computational drug discovery.

Get Started Now