The agentic AI capability uses verified Westlaw content to provide legal professionals with citation-backed analysis
Highlights
- Deep Research uses agentic AI to analyze legal questions through multi-step planning and iterative searches.
- The tool accesses Westlaw's curated database maintained by over 1,200 full-time attorney-editors.
- Each report includes transparent research logs with verifiable citations and step-by-step reasoning.
For decades, legal research followed a predictable, if grueling, rhythm. A practitioner would type keywords into a database, sift through hundreds of results, and manually piece together a coherent strategy from a patchwork of case law and statutes. While digital tools made the library more accessible, they didn’t necessarily make the research process less of a marathon.
Enter Deep Research in CoCounsel Legal, an agentic AI capability that fundamentally changes how legal professionals approach complex research questions. Unlike traditional AI tools that simply generate answers, Deep Research operates like an expert legal researcher, setting goals, selecting appropriate tools, and navigating multiple steps to complete a full analysis.
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Beyond search results: How Deep Research actually works
The foundation that makes the difference
Human expertise guides AI precision
How Deep Research transforms the workday
Beyond search results: How Deep Research actually works
Deep Research represents a significant evolution from basic AI-assisted search. When you submit a legal research question, the system doesn’t immediately jump to an answer. Instead, it creates a multi-step plan tailored to your specific inquiry, determines which content types and tools to use, and then executes iterative searches while building a synthesis of findings.
The tool first analyzes your question to identify key legal concepts, then selects the most relevant Westlaw tools, including KeyCite, the Key Number System, and professionally maintained annotated statutes. When a statute is central to your question, Deep Research recognizes KeyCite validity signals like red or yellow flags and factors them into its analysis, determining when a case might be overruled or treated negatively.
This systematic approach allows the AI to build comprehensive analysis through multiple research cycles, refining its understanding with each iteration until it produces a complete, synthesized response.
The foundation that makes the difference
What sets Deep Research apart from generic AI tools is its foundation in Westlaw’s curated database. While many AI systems scrape the general internet — often leading to outdated, incomplete, or jurisdiction-inappropriate information — Deep Research accesses content supported by more than 1,200 full-time attorney-editors who continually curate, validate, and organize legal materials. The result: jurisdiction-specific, comprehensive analysis grounded in valid, up-to-date law.
Transparency builds trust
Trust in AI grows when users can see the “why” behind an answer. Each Deep Research report includes a detailed research log that outlines which questions were explored, what sources were consulted, and what conclusions were reached.
By providing step-by-step reasoning and verifiable citations, the tool invites legal professionals to apply their own expertise to the results. Users can click through citations to verify the law themselves, ensuring that the AI’s findings align with their own professional judgment. Seeing the proper steps taken turns the research process into a collaborative effort between the attorney and the technology.
For attorneys concerned about professional responsibility and ethical obligations, Deep Research Verify provides an additional layer of confidence by evaluating AI-generated legal research against authoritative sources — validating what’s cited and surfacing relevant authority that may not appear in the original report.
Human expertise guides AI precision
Behind Deep Research’s reliability is a dedicated team of specialists who ensure the AI meets professional standards. Product experts like Tiffany Lawson spend their days grading AI outputs against “gold standard” responses — a set of 150 to 200 standardized questions where the correct legal answer is already known and vetted — to ensure the technology identifies key legal issues without misrepresenting facts or reasoning.
“I think the most important part is knowing there’s a quality check going in from actual lawyers,” Lawson says. “Our customers can rest assured that the answers they’re getting are being vetted.”
This human-in-the-loop approach addresses a critical concern in the legal profession. With stories circulating about lawyers facing sanctions for submitting briefs with AI-generated fake citations, the verification process becomes essential.
How Deep Research transforms the workday
Consider these real-world scenarios where Deep Research delivers the greatest impact:
Multi-jurisdictional compliance questions: What used to require hours of cross-referencing state regulations now takes minutes. Deep Research identifies relevant statutes across jurisdictions, flags conflicting requirements, and provides a structured analysis of compliance obligations.
Complex statutory interpretations: Instead of manually tracking down every relevant case that interprets a statute, Deep Research maps the authority landscape, highlights negative treatment, and presents the current state of the law in a coherent framework.
Urgent motion research: When facing tight deadlines, Deep Research provides citation-backed analysis that moves you from a blank page to a sophisticated starting point, allowing you to focus on crafting arguments rather than hunting for authorities.
From the first use of Deep Research, many professionals notice how it streamlines research and supports a faster path to higher-value work. 85% of those using CoCounsel Legal also report finding more key information with advanced review and analysis tools.
This translates to three measurable benefits:
- Structured, citation-backed results with transparent reasoning
- Current legal analysis that integrates both authority and practical insights
- Time savings that free you to concentrate on high-level strategy and argument refinement
The evolution continues
As legal technology continues to advance, the goal remains the same: to help professionals complete complex work with higher quality and greater efficiency. Deep Research offers a glimpse into the future of legal work, where AI serves as a sophisticated research partner rather than a replacement for professional judgment.
By combining agentic AI with the bedrock of Westlaw’s authoritative content, Deep Research doesn’t just change how you find information — it transforms how you practice law.
Ready to see the difference for yourself? Learn more about CoCounsel Legal to amplify your expertise with AI-driven research.
