CoCounsel

CoCounsel

Thomson Reuters
+
+

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About

ArkLegal AI is a cloud-based U.S. legal research, document analysis and drafting platform for attorneys, law firms, legal teams, businesses and self-represented users. It supports jurisdiction-aware research across all 50 states and federal courts, citation checks and source links, document review, legal drafting and matter workspaces. Microsoft Word, OneDrive and Clio integrations are included in the Ark plan. Users can research questions, analyze uploaded documents and develop drafts in a browser. Free research and document tools are available alongside paid subscriptions. Founded on December 6, 2025 by practicing attorney Philippe Revah, ArkLegal AI is operated by ARK LEGAL AI LLC in Hallandale Beach, Florida. ArkLegal AI is software, not a law firm. Users should independently review sources, current treatment, citations and drafts before relying on results.

About

Thomson Reuters CoCounsel is an AI-powered professional assistant designed for legal, tax, audit, accounting, and compliance workflows. The platform combines artificial intelligence with authoritative professional content to support research, document analysis, drafting, and complex problem-solving. Legal professionals can use CoCounsel to research legal questions, review contracts, analyze case materials, and generate documents using information from Westlaw and Practical Law. Tax and accounting professionals can access trusted research sources, examine financial documents, and automate recurring analysis and reporting tasks. Its agentic AI capabilities support multistep workflows, document processing, information retrieval, and the creation of structured professional deliverables. CoCounsel provides source citations, enterprise security controls, and integrations with professional tools to help organizations improve productivity while maintaining oversight of AI-generated work.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Attorneys, law firms, in-house legal teams, businesses and self-represented users conducting U.S. legal research and drafting

Audience

Attorneys, law firms, corporate legal departments, tax professionals, certified public accountants, auditors, compliance officers, financial professionals, and organizations seeking AI-powered research, document analysis, professional drafting, and automated legal, tax, and accounting workflows

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$39.99/user/month
The Ark plan: $89 every 30 days with $89 of usage credit included each period. Covers all 50 states and federal courts, AI legal research, case agents, matter workspaces with 25 GB storage, citation verification, DOCX export, and the Clio, Microsoft Word and OneDrive integrations. Law Database + AI Doc Synthesizer: $39.99 per user per month for full case-law reading plus OCR, extraction and PDF tools. Free account with 2 free queries. No contract; cancel any time.
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Supported
Live Online Supported
In Person Supported

Company Information

ArkLegal AI
Founded: 2025
United States
arklegal.ai/

Company Information

Thomson Reuters
Founded: 2008
Canada
www.thomsonreuters.com/en/cocounsel

Alternatives

Alternatives

CoCounsel

CoCounsel

Thomson Reuters
August

August

August Law
Westlaw

Westlaw

Thomson Reuters
Harvey AI

Harvey AI

Harvey.ai

Categories

AI Legal Supported

ArkLegal AI combines multiple language models with citation-focused retrieval for U.S. legal work: research answers, case agents, matter workspaces with document uploads, drafting with DOCX export, and integrations with Clio, Microsoft Word and OneDrive. The running cost of every chat and matter is shown as you go.

Legal Research Supported

ArkLegal AI searches case law, statutes and regulations across all 50 states and federal courts, returning answers with source links and supporting passages. Its citation verification checks that each cited authority exists, is accurately cited and has not been flagged as overruled or superseded, with the citing court's passage shown behind each treatment flag.

Categories

AI Contract Review Supported
AI Legal Supported
Contract Analysis Supported
Court Reporting Supported
Generative AI Supported
Legal Supported
Legal Research Supported

Integrations

Clio Supported
Microsoft OneDrive Supported
Microsoft Word Supported

Integrations

Clio Not Supported
Microsoft OneDrive Not Supported
Microsoft Word Not Supported
Claim ArkLegal AI and update features and information
Claim ArkLegal AI and update features and information
Claim CoCounsel and update features and information
Claim CoCounsel and update features and information