CoCounsel Legal from Thomson Reuters: Trusted, secure AI for faster legal work

CoCounsel Legal speeds review, research, and drafting in one flow-no tool-hopping. Firms report 63% time savings and enterprise-grade security with SOC 2 and ISO 27001.

Categorized in: AI News Legal
Published on: Dec 17, 2025
CoCounsel Legal from Thomson Reuters: Trusted, secure AI for faster legal work

CoCounsel Legal: Built for law, trusted by leaders

Legal work has shifted. Reviewing towering stacks of documents, chasing citations across jurisdictions, and drafting from scratch eats the hours that matter most for clients.

Thousands of firms and legal departments now rely on Thomson Reuters CoCounsel Legal, an all-in-one AI-based solution that fits the way lawyers already work. It guides matters from intake to deliverable without forcing new habits.

Highlights

  • Unified workflows: AI across document review, research, and drafting-no tool-hopping.
  • Proven efficiency: 63% time reduction reported for document review and contract drafting.
  • Enterprise security: SOC 2 and ISO 27001 certifications protect sensitive legal data.

Seamless integration across workflows

Adoption stalls when tools require major behavior change. CoCounsel Legal fits into familiar processes, so your team gets results right away without a heavy rollout.

Work end to end-review, research, and draft-in one flow.

Document review

Reviewing 500 pages of contracts in an M&A deal can take days. With CoCounsel Legal, it becomes hours, with key terms extracted, inconsistencies flagged, and risks surfaced early.

Legal research

Complex, multi-jurisdiction issues are faster to analyze. CoCounsel Legal evaluates case law across jurisdictions and returns relevant authorities with citations in minutes.

Question example: "Who has jurisdiction over a case where a passenger on a cruise ship was injured when the ship was in international waters?" CoCounsel Legal helps you scope the issue, surface controlling and persuasive authorities, and move faster with confidence.

Contract drafting

Starting from a blank page slows teams down. CoCounsel Legal suggests trusted starting points from Practical Law, so you draft quickly while maintaining quality and consistency.

These tasks connect in one place by uniting CoCounsel Essentials with Westlaw Precision, Practical Law Dynamic Tool Set, Microsoft 365, and leading DMS integrations. No more copying and pasting between systems.

Prefer Word? CoCounsel Legal runs inside Microsoft Word, so you can find the right starting point and surface reliable recommendations without leaving your document.

Proven results that change how firms operate

Customers report a 63% reduction in time spent on document review and contract drafting. That time shifts to strategy, client care, and higher-value matters.

In a survey of Westlaw Precision with CoCounsel customers, lawyers found twice as many relevant cases in the same amount of time compared to non-generative AI tools. And 85% say CoCounsel helps them find more key information than manual review alone.

For attorney Diane Haar of Hawaii Disability Legal Services, the impact is direct: "The time savings is massive, and time is money." With AI-Assisted Research in Westlaw Precision with CoCounsel, she supports more clients without increasing costs.

Built on 225 years of legal expertise

Thomson Reuters has served the legal profession for generations, and that heritage shows up in the product. CoCounsel Legal is grounded in the authoritative content and expertise of Westlaw and Practical Law-never scraped web content.

Every research result includes citations, so you can verify, trust, and file with confidence. Practical Law's attorney-editors and subject matter experts ensure outputs link to sources that stand up in real practice.

As Kiersty DeGroote, associate attorney at Bochetto & Lentz, puts it: "We knew that Westlaw had the database we needed. We knew it had the cases we needed. We knew there were tools already useful to us. So, when CoCounsel merged with Westlaw, it just made perfect sense to continue to use those products together."

Professional-grade security in a trusted partnership

Many generic AI tools don't meet the privacy standards required by top law firms and public agencies. That gap introduces unacceptable risk-from data leakage to unauthorized access.

CoCounsel Legal applies enterprise controls end to end: encryption in transit and at rest, private eyes-off processing, and data never used to train third-party models. It meets SOC 2 and ISO 27001 standards, with no data retention or cross-client contamination.

Learn more about these frameworks from authoritative sources: AICPA SOC 2 and ISO/IEC 27001.

Achieving better legal work

With CoCounsel Legal, your team ships higher-quality work product, faster. Offload repetitive tasks and spend more time on judgment, negotiation, and client relationships.

If you're building AI skills across your team, explore curated training by role at Complete AI Training.

Ready for a partner that delivers reliable, secure, accurate results across the matter lifecycle? CoCounsel Legal is the solution lawyers swear by.


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