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MONAI Model Zoo

open source / Overall score: n/a

Collection of medical imaging models packaged as MONAI Bundles, each bundling weights, training configuration and inference code under its own license. Researchers and institutions contribute bundles by reviewed pull request, every bundle version is archived and indexed, and monai.bundle.download fetches a named bundle from Project MONAI's hosting on NGC or Hugging Face. Project MONAI, started by NVIDIA and King's College London, maintains it.

Openness

5 high confidence

5.0

license: Apache-2.0(OSI)
source: public(github.com/Project-MONAI/model-zoo)
core features withheld: no — multi-institution project with public governance

The zoo's repository is Apache-2.0 and holds every bundle's code and configuration, with each bundle also carrying its own license for its weights. Neither the project's site nor its repository offers a paid edition.

https://project-monai.github.io/ recorded 2026-09-27
"Maintained by NVIDIA, NIH, King's College London, Mayo Clinic, MSKCC, Stanford, DKFZ, and 30+ other institutions. Governance, working groups, and roadmap decisions are public."
https://raw.githubusercontent.com/Project-MONAI/model-zoo/HEAD/LICENSE recorded 2026-09-27
Apache License Version 2.0, January 2004, full text.
https://raw.githubusercontent.com/Project-MONAI/model-zoo/HEAD/README.md recorded 2026-09-27
"The MONAI Model Zoo repository itself follows Apache License"; bundles "require a license for the software itself comprising the configuration files and model weights".

Adoption

not assessed

Most bundle versions are hosted on NVIDIA's NGC, which publishes no download counts, and the remainder on Project MONAI's Hugging Face organization, whose counters would cover only part of the zoo. No reading was recorded.

https://raw.githubusercontent.com/Project-MONAI/model-zoo/HEAD/models/model_info.json recorded 2026-09-27
Index of released bundle versions and their download sources, e.g. "source": "https://api.ngc.nvidia.com/v2/models/nvidia/monaihosting/spleen_ct_segmentation/versions/0.1.0/files/...".

Capability

2 medium confidence

2.0

Like the NGC catalog, the zoo hosts versioned packages under its operator's own accounts and serves them by name through a download API. Contributors cannot publish directly; each bundle arrives by a pull request the maintainers review, so it is a curated collection rather than an open registry.

https://raw.githubusercontent.com/Project-MONAI/model-zoo/HEAD/CONTRIBUTING.md recorded 2026-09-27
"All code changes to the dev branch must be done via pull requests." "Wait for reviews; if there are reviews, make point-to-point responses".
https://raw.githubusercontent.com/Project-MONAI/model-zoo/HEAD/models/model_info.json recorded 2026-09-27
Per-version sources on NGC ("api.ngc.nvidia.com/v2/models/nvidia/monaihosting/...") and Hugging Face ("https://huggingface.co/MONAI/vista3d/tree/0.5.11").
https://raw.githubusercontent.com/Project-MONAI/model-zoo/HEAD/README.md recorded 2026-09-27
"for each distinct version of a bundle, it will be archived as a .zip file ... and stored in Releases." "python -m monai.bundle download "spleen_ct_segmentation" --bundle_dir "bundles/""

Verified 2026-09-27