Business Wire

Bioptimus Launches H-optimus-0, the World's Largest Open-Source AI Foundation Model for Pathology

Share

Less than five months after its launch, French startup Bioptimus has announced the release of H-optimus-0, the world’s largest open-source AI foundation model for pathology. With 1.1 billion parameters, H-optimus-0 is trained on a proprietary dataset of several hundreds of millions of images extracted from over 500,000 histopathology slides across 4,000 clinical practices. This sets a new benchmark for state-of-the-art performance in several critical medical diagnostic tasks, from identifying cancerous cells to detecting genetic abnormalities in the tumor.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20240711578499/en/

Rodolphe Jenatton, CTO of Bioptimus: “Having launched less than five months ago, we are excited to introduce H-optimus-0, a fully open-source model that represents a significant leap forward in the field of pathology. We are committed to advancing medical research and improving patient care. By encouraging collaboration and the adoption of new practices, we aim to speed up innovations in pathology and beyond, ultimately benefiting patients worldwide.”

Pathology is the cornerstone of disease diagnosis, requiring meticulous examination of tissue samples to identify abnormalities. Traditionally, this process relies heavily on pathologists' expertise and experience. However, the increasing complexity and volume of cases necessitate advanced tools that can assist pathologists in making faster, more accurate diagnoses.

H-optimus-0 Key Features and Capabilities

  • Unmatched Scale and Performance: With 1.1 billion parameters, H-optimus-0 is the largest open-source AI model tailored specifically for pathology, ensuring comprehensive analysis and high accuracy.
  • Extensive Training Dataset: Trained on a vast dataset of over 500,000 pathology slides, H-optimus-0 has been exposed to a diverse array of cases, enabling it to generalize effectively across different diagnostic scenarios.
  • State-of-the-Art Diagnostics: H-optimus-0 achieves state-of-the-art performance in several key diagnostics tasks, consistently meeting the performance or outperforming existing models and setting new standards in the field. The model was assessed on 5 tile-level tasks to identify tissue types or tissue characteristics and 6 slide-level tasks to detect the presence of biomarkers or the presence of metastasis across several cancer types.
  • Open Source Availability: As an open-source model, H-optimus-0 can be utilized by researchers to accelerate the development of novel digital pathology models and will foster collaboration among researchers, clinicians, and developers, driving further advancements and solutions in pathology AI.

With its unprecedented scale and depth of training within the open-source community, H-optimus-0 leverages cutting-edge AI technology to enhance the precision and efficiency of pathology diagnostics.

Professor Jean-Philippe Vert, PhD, co-founder and CEO of Bioptimus, said: “H-optimus-0 is just the beginning. It marks the first in a long series of models we will create at Bioptimus, each more advanced and comprehensive than the last. Future models will not only be trained on an even larger number of pathology images from Europe, Asia and Africa but will also incorporate other modalities, such as genomics and proteomics. Our ultimate goal is to create the first multiscale foundation model of biology, capable of integrating diverse biological data and scales to enable scientific discoveries and accelerate biomedical innovations.”

You can access the model, detailed documentation, and research findings on our GitHub repository here.

About Bioptimus

Bioptimus is building the universal AI foundation model in biology to drive advancements in scientific research and biotechnological innovation. Leveraging a team of world-class experts, employing state-of-the-art AI technologies and accessing unique proprietary data at scale, we aim to fuel breakthrough discoveries and accelerate innovations in biomedicine and beyond. For more information, please visit https://www.bioptimus.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20240711578499/en/

Contacts

stephanie.libous@owkin.com

About Business Wire

For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.

www.businesswire.com

Subscribe to releases from Business Wire

Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.

Latest releases from Business Wire

Nominations open for The MIDORI Prize for Biodiversity 2026 by AEON Environmental Foundation and the Secretariat of the Convention on Biological Diversity16.1.2026 10:00:00 EET | Press release

The call for nominations for The MIDORI Prize for Biodiversity 2026 is open from 2 February to 31 March 2026. Nominations are invited from members of the public through the AEON Environmental Foundation website at https://www.aeonkankyozaidan.or.jp/en/prize/. The Award Ceremony and Award Winners Forum of the 2026 edition of the Prize will be held on 27 August in Tokyo, Japan. These events will contribute to the global mobilization around COP 17 of the Convention on Biological Diversity (CBD), which will take place in Yerevan (Armenia) under the theme of “Taking action for Nature”. Co-organized by the AEON Environmental Foundation and the Secretariat of the CBD, the Prize is awarded to individuals who make outstanding contributions to global biodiversity-related objectives, including the conservation and sustainable use of biodiversity, and other environmental challenges such as climate change. To date, 21 individuals from 20 countries have received the prize. Established by the AEON En

Tigo Energy and Weco Certify MLPE-Inverter Compatibility to Simplify PV System Design16.1.2026 07:00:00 EET | Press release

Tigo Energy, Inc. (NASDAQ: TYGO) (“Tigo” or “Company”), a leading provider of intelligent solar and energy software solutions, today announced the Company has signed a certificate of compatibility with Weco S.r.l., documenting the compatibility between Tigo Flex MLPE products and hybrid solar inverters from Weco. The certification covers certain single-phase and three-phase Weco products and members of the Tigo TS4-A and TS4-X product families, when properly designed and installed. Together, these products are designed to deliver high-quality, enhanced value through a system that generates and manages solar energy more efficiently and delivers the features residential energy customers demand. “The compatibility between our inverter solutions and Tigo optimizers represents a significant step forward for the entire industry, and confirms our commitment to simplifying the work of solar professionals,” said Federico Cusumano, R&D manager at Weco S.r.l. “Thanks to this certification, design

Binarly to Unveil “Broken Trust” Research: Firmware Bypass Chains, BMC Persistence, and EDR Evasion16.1.2026 00:04:00 EET | Press release

Binarly, the industry leader in software and firmware supply-chain security, today announced an upcoming DistrictCon presentation “Broken Trust: Firmware Bypass Chains, BMC Persistence, and EDR Evasion.” The session will detail how firmware-level attack chains observed in shipped enterprise devices can effectively undermine modern endpoint defenses, enabling stealthy compromise and long-lived persistence. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260115834965/en/ Binarly Unveils Broken Trust Research: Firmware Bypass, BMC Persistence In this presentation, the Binarly REsearch team will dismantle the assumption of hardware trust by presenting multiple real-world firmware bypass chains. Alex Matrosov and Fabio Pagani will provide a deep dive into the specific vulnerability classes and exploitation primitives that make these attacks reliable in practice. The team will also deliver a live demonstration compromising a fully

World Economic Forum and Salesforce Empower Global Leaders With First-of-its-Kind Agentic Assistant for the 2026 Annual Meeting in Davos15.1.2026 20:06:00 EET | Press release

Salesforce (NYSE: CRM), the world’s #1 CRM, today announced the activation of the World Economic Forum’s institutional knowledge powered by Agentforce 360 to support over 3,000 of the world’s most influential leaders at the 2026 World Economic Forum Annual Meeting. The Forum has launched a new proactive, high-precision concierge app, “EVA,” built on the Agentforce 360 Platform, Salesforce’s agentic platform. EVA will empower attendees to move beyond traditional information access, with an AI agent that doesn’t just answer questions, but can reason, prioritize, and act on a leader’s behalf for the 2026 Annual Meeting. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260115571119/en/ Scheduled for January 19–23 in Davos, Switzerland, this year’s event is set to be the largest meeting in the organization's history. With over 450 high-impact sessions and thousands of specialized interactions, the gap between available insight and

Coolbrook Named on the 2026 Global Cleantech 10015.1.2026 19:14:00 EET | Press release

Coolbrook, a transformational technology and engineering company on a mission to decarbonise major industrial sectors like petrochemicals and chemicals, iron and steel, aluminium, and cement, has been named on Cleantech Group’s 2026 Global Cleantech 100. This annual list recognizes companies poised to deliver market-ready solutions that advance a cleaner, more resilient global future. The report highlights innovators addressing some of the world’s most urgent environmental and infrastructure challenges. The complimentary report introduces you to innovators advancing groundbreaking technologies and business models to enable us to act on the ever-increasing climate and environmental crisis. Following a 2025 marked by geopolitical volatility and shifting economic signals, the global cleantech ecosystem enters 2026 with slightly greater certainty - yet heightened competitive pressure. Growth is concentrating around two dominant themes: AI infrastructure and critical minerals. “The 2026 Glo

In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.

Visit our pressroom
World GlobeA line styled icon from Orion Icon Library.HiddenA line styled icon from Orion Icon Library.Eye