Legal AI Tool Combines Multi-Step Research With Verified Content
Deep Research in CoCounsel Legal operates like an expert legal researcher, setting goals and executing multiple search cycles to answer complex questions. Unlike traditional search tools that return results for lawyers to manually sift through, the system plans its approach, selects appropriate research methods, and synthesizes findings into structured analysis.
The tool accesses Westlaw's database, which is maintained by over 1,200 full-time attorney-editors. This foundation distinguishes Deep Research from generic AI systems that scrape the public internet, often producing outdated or jurisdiction-inappropriate information.
How the system works
When a lawyer submits a research question, Deep Research first identifies key legal concepts. It then selects relevant Westlaw tools, including KeyCite, the Key Number System, and annotated statutes. The system recognizes validity signals like red or yellow flags in KeyCite, which indicate whether a case has been overruled or treated negatively.
The AI refines its understanding through multiple research cycles until it produces a complete response. Each report includes a detailed research log showing which questions were explored, what sources were consulted, and what conclusions were reached.
Transparency and verification
Lawyers can click through citations to verify findings themselves. Deep Research Verify adds another layer by evaluating AI-generated research against authoritative sources, validating citations and surfacing relevant authority that may not appear in the original report.
The verification process addresses a critical concern in the legal profession. Recent cases have involved lawyers facing sanctions for submitting briefs containing AI-generated fake citations. A team of specialists grades Deep Research outputs against standardized questions with known correct answers to ensure the technology identifies key issues without misrepresenting facts.
Practical applications
Multi-jurisdictional compliance questions that once required hours of cross-referencing now take minutes. Deep Research identifies relevant statutes across jurisdictions and flags conflicting requirements.
For complex statutory interpretations, the tool maps the authority landscape and presents the current state of law in a structured framework rather than requiring lawyers to manually track down every relevant case.
Lawyers facing tight deadlines can move from a blank page to citation-backed analysis, allowing them to focus on crafting arguments rather than hunting for authorities.
Results and adoption
85% of professionals using CoCounsel Legal report finding more key information with advanced review and analysis tools. The system delivers three measurable benefits: structured, citation-backed results with transparent reasoning; current legal analysis that integrates authority and practical insights; and time savings that free lawyers to concentrate on strategy and argument refinement.
Learn more about AI for Legal professionals and how AI Research tools are changing legal practice.
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