CogStack

Name

CogStack

Legal name

CogStack Ltd

Website

https://cogstack.org

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

Healthcare AI / Clinical Natural Language Processing

NAICS

Computer Systems Design and Related Services (54151), Web Search Portals, Libraries, Archives, and Other Information Services (519)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Healthcare Data Integration, ETL/ELT & Pipeline Orchestration (HLACAIAC)

akta.pro secondary industries

Terminology Services & Semantic Interoperability (SNOMED/LOINC/RxNorm mapping) (HLACABAJ), Diagnostic & Triage Decision Support (HLACAGAA), Record Locator Services (RLS) & Longitudinal Record Aggregation (HLACABAH)

Keywords

• Healthcare AI platform
• Clinical NLP software
• Medical data extraction
• Electronic health records
• Clinical search tools

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations

Revenue model

1. Enterprise Software Licensing: Platform licensing to NHS Foundation Trusts and healthcare providers, typically as enterprise agreements with multi-year contracts. Healthcare providers recoup full investment within two years according to partner trust reports.
2. Professional Services: Implementation, customization, and support services for enterprise deployments. CogStack can be flexibly deployed on any hardware, on-prem bare metal to managed cloud, requiring professional services for deployment.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels8 records

Core offering

CogStack provides a healthcare AI platform that combines Natural Language Processing, Generative AI, and search capabilities to extract structured information from unstructured clinical text in electronic health records. The company sells this tooling primarily to NHS Foundation Trusts and other healthcare providers, supported by products such as MedCAT (clinical NLP), AnonCAT (de-identification), MedCAT Trainer, MedCAT Service, CogStack Foresight, CogStack Language Models, CogStack Cohorter, CogStack Observability, and a CogStack Community Edition.

Product overview

CogStack is a healthcare AI platform consisting of interchangeable modules built around its core NLP engine MedCAT and generative AI model Foresight. The platform combines natural language processing, full-text search, clinical coding automation, and population health analytics into a unified system. Key components include MedCAT (named entity recognition and linking), AnonCAT (de-identification), MedCAT Trainer (model customization), MedCAT Service (production API), CogStack Foresight (generative AI for digital twins), CogStack Cohorter (patient cohorting), CogStack Observability (monitoring), and the open-source Community Edition. The platform is designed as self-hosted software that works with any EHR system and supports international data standards like SNOMED-CT and OMOP.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• £1.2 million annual savings at King's College Hospital
• +6 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles1 record

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability8 records

Feature11 records

Partnerships

14 partnerships are on record, tiered major, core and strategic.

• EXIT-CVD ConsortiummajorStrategic or Co-development Partner · 26 April 2026Five-year €27.6 million European research programme bringing together 42 organisations from 17 countries. Funded by EU Innovative Health Initiative (IHI). CogStack contributes real-world evidence capability for cardiovascular health research including pregnancy-related cardiovascular risks and data harmonisation.
• UCL (University College London)coreStrategic or Co-development Partner · 3 December 2025Academic spinout partner alongside King's College London. CogStack co-founder Professor Richard Dobson has joint appointment at UCL. Professor Rui Providência is also Professor of Cardiovascular Epidemiology at UCL.
• OneLondon Secure Data EnvironmentstrategicTechnology or Integration · 2 September 2024CogStack technology supports the OneLondon SDE for secure data sharing across London NHS trusts.
• Monash University / HelixstrategicStrategic or Co-development Partner · 3 December 2020Australian partner leading deployment of CogStack tailored for the Australian healthcare context. Monash Helix serves as the technology research platform for the Australian implementation.
• King's College London (NIHR Maudsley BRC, PhiDataLab)coreStrategic or Co-development PartnerPrimary research and development partner. CogStack was developed by researchers at King's College London including NIHR Maudsley Biomedical Research Centre and PHIDL Precision Health Informatics Data Lab. Professor Richard Dobson serves as Chief Research Officer and group lead.
• King's College Hospital NHS Foundation TrustcoreStrategic or Co-development PartnerOne of four founding NHS partner trusts. CogStack has been deployed for clinical coding, COVID-19 research, and trial recruitment. Trust reported £1.2 million annual savings from the technology.
• Guy's and St Thomas' NHS Foundation TrustcoreStrategic or Co-development PartnerOne of four founding NHS partner trusts. Trust reported £2.5 million in additional income in 2023 through improved clinical coding using CogStack.
• South London and Maudsley NHS Foundation TrustcoreStrategic or Co-development PartnerOne of four founding NHS partner trusts. CogStack powers the VIEWER platform for psychosis population health management and the CRIS (Clinical Record Interactive Search) service for mental health research.
• University College London HospitalscoreStrategic or Co-development PartnerOne of four founding NHS partner trusts. CogStack has been deployed for clinical NLP implementation and research purposes.
• University Medical Center GroningenmajorStrategic or Co-development PartnerEXIT-CVD consortium coordinator led by Professor Pim van der Harst. CogStack collaborates on cardiovascular disease research across Europe.
• European Society of CardiologymajorStrategic or Co-development PartnerLeads communication and dissemination across the EXIT-CVD project. CogStack partners with ESC on cardiovascular research initiatives.
• Health Data Research UK (HDR UK)strategicStrategic or Co-development PartnerHDR UK National Text Analytics Project led by Professor Richard Dobson and Dr Angus Roberts. Building the UK's NLP community for healthcare with shared tools, methods, and datasets across the NHS.
• NHS AI LabstrategicStrategic or Co-development PartnerThe AI Award funding from NHS AI Lab supports development of CogStack across five NHS trusts.
• SNOMED InternationalstrategicTechnology or IntegrationCogStack uses SNOMED-CT terminology standards for clinical coding and concept extraction via the MedCAT library.

Scale indicators11 records

Recent moves7 records

Expansion highlights6 records

Peers

• Atropos Health:

Direct peers

• Mendel: Healthcare-focused NLP platform for structuring unstructured clinical text and powering life sciences real-world evidence. Directly comparable to MedCAT and CogStack's clinical NLP pipeline serving pharma and provider customers.
• Deep 6 AI: Clinical trial acceleration platform using NLP on EHR data to match patients to trials, comparable to CogStack's cohort selection and trial recruitment capabilities demonstrated in the COVID-CNS trial.
• Arcadia: Healthcare data analytics platform built for population health management, value-based care, and EHR data aggregation. Comparable to CogStack in serving large hospital systems with integrated clinical and claims data analytics.
• Health Catalyst: US-listed healthcare data and analytics platform offering data warehousing, NLP-driven insights, and population health analytics to hospitals and health systems. Directly comparable to CogStack as an enterprise healthcare data platform serving large provider customers.
• nference: Biomedical NLP and multi-modal AI platform partnering with academic medical centres and pharma for real-world evidence generation. Comparable to CogStack in EHR NLP depth, academic medical centre customer base, and pharma research use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks1 record

Key highlights7 records

Customer concentration

• GitHubgithub.com/CogStack
• LinkedInlinkedin.com/company/cogstack-ai

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CogStack