Description
CMS, one of the world’s largest international law firms, has successfully integrated Harvey's legal-specific AI capabilities into its daily workflows, achieving a remarkable 95% adoption rate among over 3,000 lawyers during the initial rollout. This initiative is part of a broader strategy to enhance legal services through technology, allowing lawyers to analyze documents faster, surface insights from extensive knowledge sources, and produce stronger first drafts.
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Recognizing the transformative potential of generative AI, CMS leadership understood that simply providing access to new tools was insufficient. They needed to ensure that their lawyers could effectively apply the technology in practice. After evaluating several generative AI platforms, CMS selected Harvey for its legal-specific capabilities, rapid product development, and robust security measures, which were crucial given the sensitive nature of client data.
The implementation of Harvey was approached as a transformation program rather than a straightforward technology rollout. CMS's Legal Tech and Innovation teams conducted a twelve-month pilot with 300 lawyers across various practice areas, focusing on practical enablement. This involved onboarding lawyers, sharing real use cases, and embedding the platform into live matters. As lawyers began to see the benefits of Harvey in real-time, adoption spread quickly across jurisdictions and practice groups.
By mid-2025, CMS had scaled Harvey to its entire firm, with over 7,200 lawyers using the platform. The capabilities of Harvey have allowed teams to conduct contract reviews, synthesize knowledge, and analyze large-scale documents more efficiently than ever before. The impact has been significant, with lawyers saving time on routine tasks and focusing more on high-value analysis and client strategy.
The cultural shift within CMS has been notable, with lawyers reporting increased job satisfaction due to the time saved and the enhanced quality of work they can deliver. Clients have also recognized the improvements, as CMS lawyers frequently share their experiences with Harvey, illustrating how AI enhances legal services and enables new types of work. For CMS, generative AI has transitioned from an experimental tool to a core component of their legal practice, fundamentally reshaping how they deliver value to clients.
- CategoryAI Legal Assistants
Key Takeaways
95% adoption rate
Supports 7,200 lawyers
Legal-specific AI capabilities
Enhanced document analysis
Real-time insights from knowledge sources
Streamlined contract review
Improved drafting efficiency
High standards of security and governance
What This Case Study Demonstrates
- Contract Review
- Knowledge Synthesis
- Document Analysis
- Client Interaction
- Drafting Assistance
