About us

We have been helping enterprises identify meaning across diverse datasets and massive amounts of unstructured information for over 20 years.
Whether it’s knowledge management, understanding unstructured data, planning advanced initiatives such as data fabric, data mesh, Generative AI and Large Language Models (LLM) or a specific focus on fraud detection, drug formulary planning, Customer 360 and much more – we can help!


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The driving force behind everything we do is to put enterprises back in control of their knowledge assets and to help them run, grow and evolve their business efficiently.

By transforming the way organizations identify meaning across diverse datasets and massive amounts of unstructured information, we help them see a much bigger picture.

We make this possible because we know how to combine semantic graph databases with text mining and machine learning. This brings data and content together in big knowledge graphs to allow better interlinking, interpreting, analyzing and reuse of business critical data.


The vision behind all our technology is to enable machines to interpret data and text, which empowers our customers to reveal more facts and relationships quickly and with less effort.

By interlinking data in graphs that model knowledge as it is represented in the human’s brain, we enable enterprises not only to access this knowledge, but also to interpret and analyze it.

We can then interlink this data with text by generating metadata that also becomes part of the knowledge graph allowing even more complex analytics and querying of hidden information.

Finally, we integrate open data with proprietary data and commercial databases to make use of the exponentially growing web of open data.




We have a passion for knowledge. We believe that bringing more knowledge to more people will make the world a better place.



We are restless about innovation. We are always in pursuit of better ways to get things done, opening doors for new ideas and approaches.



We care about what we do and the people we do it with. We respect, listen, consult and support.

Technology Excellence

Technology Excellence

We strive for technology excellence. We love turning complex science and advanced technology into simple working solutions.



We have high regard for transparency. We believe that it’s what all relationships are built on.

Historical Background

Started in 2000 as R&D lab within Sirma Group, a top 3 Bulgarian software company, Ontotext’s technology and solutions are spread wide across the value chain of the most knowledge intensive enterprises in Financial Services, Publishing, Healthcare, Pharma, Manufacturing and Public sectors.

  • Started in 2000 as R&D lab within Sirma Group.

  • 2008 Ontotext spun off into a separate legal entity

  • 2010 it registered a subsidiary in the US and successfully established a customer network comprised of leading world class organizations

  • 2019 Sirma AI, a unit of Sirma Group Holding, acquired Ontotext

  • 2022 Ontotext received a growth funding from Integral Venture Partners