MedicineComputer vision

Paige Virchow

Paige's pathology foundation model, trained on millions of digital slides. The first version is Apache 2.0, the second is for research only. Does not replace a doctor; decisions are made by a specialist.

The last open version came out in Aug 2024. The family has not been updated for a long time: the model still works, but do not expect fixes or new sizes.

Developer
Paige, USA
First release
Jun 2024
Latest release
Aug 2024
Sizes
about 632M
License
Commercial use with conditionsMixed: Virchow — Apache 2.0, Virchow2 — CC-BY-NC-ND 4.0 (academic research only, commercial requests are declined by default)
Running
On your own serverNeeds a GPU
Industries
Healthcare, Science and research
Deploy on your server Hugging Face

What it does

  • Slide patch features for research classifiers
  • Selecting slides for re-review in research projects
  • Comparison with other pathology models on your own archive

Where it is used

Clinic research departmentsPathology labsPharma R&D

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
fits
1 GPUOne GPU with 16–80 GB — mid-size versions
fits
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. Virchow2
  2. Virchow

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems.

Frequently asked questions

Can Paige Virchow be used in a commercial project?

With conditions. License: Mixed: Virchow — Apache 2.0, Virchow2 — CC-BY-NC-ND 4.0 (academic research only, commercial requests are declined by default). Restrictions vary — region, company revenue, attribution requirements. Have a lawyer check the terms before a commercial launch.

What hardware does Paige Virchow need?

At minimum: Laptop or regular PC, up to 8 GB of VRAM — smaller versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does Paige Virchow support Russian?

Language does not matter for this model: it does not work with text.

Where can I download Paige Virchow and what does it cost?

The Paige Virchow weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Details

Source: huggingface.co/api/models?author=paige-ai. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.