Coherent Knowledge

AI that mimics human reasoning

Incorporating breakthrough advances in logical AI, we enable knowledge workers to capture organizational processes and automate key policies, regulations, contracts, and more. Use Coherent’s Ergo Suite to automate decisions, answer queries, integrate knowledge, and provide explanations. It is uniquely flexible and scalable at capturing complex knowledge that comes from natural language.

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Coherent Knowledge is …

a technology focused company specializing in an advanced Artificial Intelligence (AI) technology that combines Knowledge Representation and Reasoning (KRR) tightly with Natural Language Processing (NLP) and complements Machine Learning (ML).

Our team members have a long track record of KRR innovation and leadership in industry and research.

We are the makers of Ergo Suite software which includes a reasoning engine and an IDE with strong explanation capabilities and graphical UI, API’s, and a variety of connectors to graph databases (a.k.a. knowledge graphs) and relational databases, spreadsheets and tabular data, JSON, RDF/OWL, SPARQL, SQL, XML, and more.

The core of the Ergo Suite reasoning engine has an open-source subset, Flora-2.  Coherent Knowledge continues to support the Flora-2 effort and contributes greatly to its ongoing maintenance and other development. For more details, check out this comparison of Ergo Suite with Flora-2.

Advanced Semantic Rules

Ergo Suite is the most advanced semantic rules & reasoning platform for enterprise available today.  Powerfully flexible, agile, accurate, and affordable.

New Approach

Ergo Suite takes a new approach that makes it fundamentally easier to capture and reason with the often-complex kinds of knowledge your enterprise needs to handle every day, such as business policies, legal regulations, and information integration mappings.

Decision Making

Use Ergo Suite for sophisticated automation of analysis, decision making, question answering, explanation, enhanced monitoring, and more — all at enterprise speed and scale.


Capture, integrate, and strongly leverage all your critical enterprise knowledge: natural language documents, graph databases, relational databases, NoSQL, ontologies, results of machine learning, spreadsheets, and application objects — plus the key information that resides today only in people’s heads.

Discover the spectrum of what Ergo can do

We invite you to make the future happen with us.

A New AI Technology for Knowledge Management


Ergo Suite is based on recent fundamental advances in logical reasoning and logic-based artificial intelligence, pioneered by Coherent’s team. Ergo Suite greatly expands what is possible and practical in semantic rules and semantic technology overall.

Ergo Suite uses a rule language that is easier to learn and author knowledge in than other approaches are, and is flexible enough to encode almost any kind of logical knowledge. One doesn’t have to be a logician or a programmer to use it effectively.

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explanation window

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Fully detailed explanations for each query answer are automatically generated, based on the logical chain of reasoning. These explanations can be presented in English, with provenance links to source documents and context, navigable and understandable even by non-technical users.

Senior Team

Benjamin Grosof, PhD

Benjamin Grosof, PhD

Board member, co-founder

An industry leader in knowledge representation, reasoning, and acquisition.  Pioneered semantic technology and industry standards for rules combined with ontologies, their acquisition from natural language (NL), and their applications in finance, e-commerce, policies (including contracts, regulations, and security), and e-learning.

Michael Kifer, PhD

Michael Kifer, PhD

CTO, co-founder

Co-invented F-logic, HiLog, Annotated Logic, and Transaction Logic, which are among the most widely cited works in Computer Science and Semantic Web research. He has published four text books and numerous articles in these areas. Three “Test of Time” awards.  Stony Brook University Professor.

Theresa Swift, PhD

Theresa Swift, PhD

Principal Engineer, co-founder

Led the development of the XSB Programming system, a major open-source Prolog and the backbone of Ergo Suite.  Over 75 publications in major refereed journals and conferences, editor of three books. She co-created and supports a major rules system for the Customs and Border Control agency of the US government.

Our Customers Include …

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What can we create together?

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Professional Services

We provide professional services to help our customers and partners develop applications and solutions, including support, training, design of solutions, design and development of knowledge bases, development of custom software extensions such as connectors to customer enterprise environments.

Live Demo and Pricing

Talk to us about how to use Ergo Suite for your enterprise application and environment, pricing, and to schedule a live demo.