# PLUTO (PathAI)

Source: https://onco.cc/technologies/pluto/  
OnCo record `pluto` (Technology). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

PLUTO is PathAI's compact pathology foundation model, a vision transformer pretrained at several magnifications on 195 million tiles from 158,000 slides, so one network serves slide-level and biomarker quantification tasks at whatever resolution each needs. It runs inside PathAI's AISight product, but its weights are proprietary, so outside groups cannot benchmark or adapt it.

## Summary

PLUTO is PathAI's compact pathology foundation model, a vision transformer pretrained at multiple resolutions with DINOv2 combined with masked autoencoding, so the same network works at the magnification a given task needs. The 2024 arXiv paper describes a lightweight multi-scale model trained on 195M tiles from 158k slides across 50+ sites, and it powers PathAI's AISight platform and biomarker quantification tools. It is aimed at laboratories and pharma partners who need efficient inference across many tasks rather than a separate model for each. Being proprietary, its weights cannot be independently benchmarked or adapted by outside groups, so external claims rest on the company's publications and deployments. For a newcomer: it is a smaller, efficient slide-reading model that is already inside a commercial pathology product.

## Fields

- Kind: Technology
- Status: emerging
- Last checked: 2026-09-08
- Tags: foundation-model; pathology
- Principle: PLUTO is a ViT pretrained at multiple resolutions with DINOv2 plus masked autoencoding.
- Since: 2024
- Strengths: Efficient; Deployed in PathAI products
- Limitations: Proprietary

## Sources

- PLUTO (arXiv 2024): https://arxiv.org/abs/2407.07033

## Connected records

- fronts: [AI & Computation](https://onco.cc/fronts/ai-computation/)
- technologies: [Pathology & radiology foundation models](https://onco.cc/technologies/pathology-foundation-model/)
- companies: [PathAI](https://onco.cc/companies/pathai/)

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