Bioptimus Launches H-optimus-0, the World's Largest Open-Source AI Foundation Model for Pathology
11.7.2024 10:00:00 EEST | Business Wire | Press release
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
IFF Reports Fourth Quarter and Full Year 2025 Results11.2.2026 23:36:00 EET | Press release
International Flavors & Fragrances Inc. (NYSE: IFF) reported financial results for the fourth quarter and full year ended December 31, 2025. Full year 2025 Consolidated Summary: Management Commentary “IFF delivered a solid 2025 performance, meeting the full-year financial commitments we set at the start of the year, despite a challenging operating environment,” said Erik Fyrwald, CEO of IFF. “It was also a year of continued strategic progress. We invested in R&D, commercial capabilities, and capacity expansion to better serve customers, advance our innovation pipeline, and support future profitable growth.” “We also took steps to optimize our portfolio. Through several divestitures and the recent launch of a sale process for our Food Ingredients segment, we sharpened our strategic focus and improved our financial flexibility, allowing us to direct resources to our highest-value businesses.” “Looking ahead to 2026, we are continuing to serve our customers with leading innovation to grow
Grid Dynamics Accelerates AI Transformation Momentum11.2.2026 23:05:00 EET | Press release
Grid Dynamics Holdings, Inc. (Nasdaq: GDYN) (“Grid Dynamics”), a premier AI transformation partner for the Fortune 1000, today announced it has achieved Preferred Vendor status with one of the major hyperscale cloud providers. This milestone follows a strategic, exhaustive two-year vendor consolidation initiative by the hyperscaler that reduced its service provider ecosystem to a small group. This designation establishes the contractual framework for Grid Dynamics to significantly increase business with this hyperscaler, boosting Grid Dynamics’ joint solution development, co-selling, and go-to-market opportunities. As enterprises scale AI adoption, they rely on Grid Dynamics for complex, production-grade implementations, building scalable systems on top of foundation models and integrating them into core enterprise workflows. In practice, the bottleneck in enterprise AI adoption is not the models themselves but the surrounding engineering and foundational platform capabilities — integr
Altasciences Announces Chris Perkin Appointed Executive Chairman; Marie-Hélène Raigneau Appointed Chief Executive Officer11.2.2026 22:14:00 EET | Press release
Altasciences announced today that Chris Perkin has been appointed Executive Chairman of the company’s Board of Directors, effective Tuesday, February 24, 2026. Following a leadership transition that has been underway for the past 12 months, Marie-Hélène Raigneau, President of the company since April 2025, has been appointed Chief Executive Officer, also effective Tuesday, February 24, 2026. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260211203073/en/ From left to right: Chris Perkin, Executive Chairman of the Board (Altasciences), and Marie-Hélène Raigneau, Chief Executive Officer (Altasciences). “Having worked alongside Marie-Hélène for over two decades, I am fully confident in her readiness to guide Altasciences forward with clarity and purpose,” said Chris. “I am happy to be stepping aside after 50 years in drug development, knowing that Altasciences is well-positioned for the future.” Chris joined Altasciences as CEO
Sodali & Co Hires BlackRock Investment Stewardship AI and Data Lead11.2.2026 21:20:00 EET | Press release
Sodali & Co, the leading global capital markets-centric stakeholder advisory firm, is pleased to announce that Brett Miller has joined the firm as Global Head of Data Analytics based in New York. Miller joins from BlackRock where he served as Head of Data Analytics for its Investment Stewardship team. In his new role, Miller will lead Sodali’s global AI and data analytics strategy and embed data-driven insight across the firm’s integrated Shareholder Services, Sustainability, and Strategic Communications offering to help support clients navigate the increasingly complex and interconnected governance, investor, and stakeholder landscape. Miller joins Sodali & Co. at a time when investors are rapidly leveraging data and AI to drive investment and voting decisions. He will lead the buildout of an advanced analytics and technology platform to give clients actionable insight into how their narrative is driving capital flow and voting behavior. These capabilities will empower clients to make
Egon Zehnder Opens Philadelphia Office to Support Leaders in the Region’s Fast-Growing Economy11.2.2026 19:44:00 EET | Press release
Egon Zehnder, the world’s premier leadership advisory and executive search firm, today announced the opening of its Philadelphia office, marking the firm’s 70th office globally and further expanding its footprint in the United States. The new location strengthens Egon Zehnder’s long-standing commitment to serving clients across the Mid-Atlantic region with an integrated, advisory-led approach to leadership. Located in the FMC Tower, the Philadelphia office will deliver Egon Zehnder’s full suite of leadership advisory services and executive search to the region, including CEO succession, board effectiveness, executive search, leadership assessments, executive development, culture and organizational transformation and team effectiveness. The office will be staffed by consultants who live and work in the community, pairing global insights with local business operating realities to advise clients. Ari Roitman will lead the Philadelphia office, bringing extensive experience across leadershi
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