Thomson Reuters
Headquarters
Toronto, CanadaFounded
2008CEO / Founder
Steve HaskerEmployees
10000+Funding
PublicStock
TRIProducts
5 products listedAvg. AI Score
7.9/10Website
www.thomsonreuters.com/
Profile updated
About Thomson Reuters
Thomson Reuters is a global information services company headquartered in Toronto, Canada. It was formed in 2008 following the acquisition of Reuters Group by The Thomson Corporation, a deal valued at approximately $17.2 billion. The company serves professionals in legal, tax, accounting, compliance, government, and media sectors across more than 160 countries.
The company's primary product lines include Westlaw, one of the largest legal research databases in the United States; Checkpoint, a tax and accounting research platform; Practical Law, a legal know-how service; and Reuters News, which supplies news content to media organizations and financial institutions worldwide. Thomson Reuters also operates the Reuters News Agency, which employs journalists in over 200 locations globally. Its customers include law firms, corporate legal departments, government agencies, accounting firms, and financial institutions.
Thomson Reuters trades on the Toronto Stock Exchange and the New York Stock Exchange under the ticker TRI. As of 2024, the company employs approximately 26,000 people. In 2023, it reported annual revenues of approximately $6.9 billion. The company has made several acquisitions to expand its product portfolio, including the purchase of legal AI company Casetext in 2023 for approximately $650 million, and has divested non-core assets including its majority stake in the Financial & Risk business, which became Refinitiv and was later acquired by the London Stock Exchange Group.
Specialties
Financials
Dated, source-cited figures. Estimates are marked.
Products by Thomson Reuters
All products by Thomson Reuters reviewed by our AI panel of experts.
AI-powered legal research backed by the most trusted law database
AI legal research and drafting assistant for practicing attorneys
AI-assisted legal research built on Practical Law's attorney-edited content
AI-assisted legal research grounded in Westlaw content
Document automation software for legal teams and law firms
How Our Review Panel Scores Thomson Reuters
Six independent reviewer personalities assessed Thomson Reuters's products on their own terms. They disagreed by 1.5 points — The Finance Lead was the hardest to convince, The Decision Maker the most positive.
Averaged across 5 reviewed products in our catalog. Scores are out of 10.
Competitive Landscape
Who Thomson Reuters competes with, and how they differ.
Closest head-to-head rival: Lexis+ AI and the Protege assistant mirror Westlaw AI-Assisted Research and CoCounsel, grounded in its own case-law corpus and Shepard's citation service and sold through comparable enterprise research subscriptions.
1 product reviewed on TopReviewed
AI-native startup building a generative assistant for elite law firms and in-house legal teams; it has no proprietary case-law database, competing on custom OpenAI-based workflows and firm-specific tuning rather than bundled research content.
1 product reviewed on TopReviewedThe other legacy professional-information giant: competes across tax and accounting (CCH Axcess) and legal and regulatory research, embedding generative AI into practitioner workflows rather than selling a standalone AI assistant.
Legal research platform whose Vincent AI assistant spans a multi-jurisdiction global law library; acquired by Clio in 2025, it emphasizes international coverage and lower-cost access over Westlaw's US editorial headnotes.
1 product reviewed on TopReviewedBloomberg Industry Group's flat-rate legal research service bundles dockets, news, and an AI assistant into one subscription, targeting the same law-firm research budgets as Westlaw without per-module pricing.
European-born collaborative AI workspace adopted by large law firms; focuses on tabular document review and shared agentic workflows, competing with CoCounsel for firm-wide AI adoption without a proprietary research corpus.
1 product reviewed on TopReviewedCompany Timeline
Key milestones in Thomson Reuters's history, with sources.
- Acquisition
Acquires Additive, AI-powered tax document processing startup
Thomson Reuters bought the San Francisco startup, founded in 2023, whose GenAI-native platform ingests and parses complex US federal tax forms such as Schedule K-1 during tax preparation; terms were not disclosed.
thomsonreuters.com - Launch
Launches CoCounsel Legal with agentic AI and Deep Research
CoCounsel Legal unified legal research, workflow automation, and document intelligence, adding Deep Research — an agentic capability that plans and executes multi-step legal research grounded in Westlaw and Practical Law content.
thomsonreuters.com - Milestone
Wins first US AI copyright fair-use ruling against Ross Intelligence
A Delaware federal court granted Thomson Reuters partial summary judgment, holding that Ross Intelligence's use of Westlaw headnotes to train a legal AI was infringing and not fair use — the first US ruling to reject a fair-use defense for AI training data.
dwt.com - Acquisition
Acquires Materia, agentic AI for tax, audit and accounting
Thomson Reuters acquired the US startup, founded in 2022, whose agentic AI assistant automates research and large-scale document analysis for tax, audit, and accounting workflows, extending its AI roadmap beyond legal.
thomsonreuters.com - Acquisition
Acquires legal-LLM developer Safe Sign Technologies
Thomson Reuters bought the UK startup building legal-specific large language models, founded in 2022 by researchers from Cambridge, Oxford, and MIT; terms were not disclosed. It was the company's second generative-AI acquisition after Casetext.
thomsonreuters.com - Launch
Unveils CoCounsel 2.0 GenAI assistant
The second-generation CoCounsel combined models from OpenAI and Google Cloud with Thomson Reuters content, ran about three times faster than the original, and shipped inside Westlaw Precision, Practical Law, and Microsoft 365.
thomsonreuters.com - Launch
Launches AI-Assisted Research on Westlaw Precision
Generative AI debuted in Westlaw Precision for US customers, letting lawyers ask complex questions in conversational language; the skill was built on the Thomson Reuters Generative AI Platform using technology from the Casetext acquisition.
thomsonreuters.com - Acquisition
Signs $650M deal to acquire legal AI startup Casetext
Thomson Reuters agreed to pay $650 million in cash for Casetext, maker of the GPT-4-powered CoCounsel legal assistant, alongside a commitment to invest more than $100 million a year in AI capabilities; the deal closed on August 17, 2023.
techcrunch.com - Acquisition
Agrees to acquire tax automation firm SurePrep for $500M
Thomson Reuters announced a definitive agreement to buy California-based SurePrep, whose software automates 1040 tax-return preparation for more than 23,000 tax professionals, in a $500 million all-cash deal that closed in January 2023.
techcrunch.com - Founded
Thomson completes acquisition of Reuters, forming Thomson Reuters
The Thomson Corporation closed its approximately $16.6 billion acquisition of Reuters Group on April 17, 2008, and Thomson Reuters shares began trading the same day, creating the professional-information company behind Westlaw.
ir.thomsonreuters.com
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