San Francisco, CA, June 11, 2025 — Paul, Weiss, Rifkind, Wharton & Garrison LLP, a leading international law firm, has become the first firm to launch custom workflows using Workflow Builder—a new generative AI tool developed by Harvey. Paul, Weiss served as the core design partner, lending its expertise in innovation and technology to shape the development of Workflow Builder from its earliest stages, helping to define and rigorously test the core capabilities.

With the Workflow Builder, innovation professionals and lawyers can use the tool to design repeatable workflows that embed valuable firm expertise, guardrails and best practices into Harvey. As a result, teams and clients benefit from faster, more consistent outcomes. This foundational technology not only streamlines day-to-day work, but also introduces the essential building blocks for the next generation of autonomous agents and tool utilization.

Paul, Weiss’s investment in Harvey’s Workflow Builder technology positions it at the forefront of legal generative AI implementation and reflects its dedication to innovation in all areas of its business. By using the Workflow Builder, Paul, Weiss can now drive the process of generating high-quality workflows built by legal experts, achieving results more rapidly than coordinating with Harvey for each one-off workflow.

“This development represents more than just technology adoption; it's establishing new standards for how legal generative AI can be implemented at the vertex of the client-firm relationship to incubate collaborative, value-add tools,” said Gina Lynch, chief Knowledge & Innovation officer at Paul, Weiss. “By pioneering the development of a scalable, custom generative AI workflow system, we’re advancing both our own practice and helping to define best practices for the legal community.”

Paul, Weiss collaborated extensively with Harvey to analyze and deconstruct the core components of legal workflows, enabling tailored, reliable results. The development of the tool also represents a significant step forward in building collaborative workflows, enabling the firm to work more closely with clients to identify opportunities for efficiency gains and enhance service delivery across complex legal matters.

“Our partnership with Harvey is a strategic move to strengthen our generative AI infrastructure, which underpins our firm’s dedication to providing the world’s best client service,” said Paul, Weiss Chairman Brad S. Karp. “By combining Harvey’s unique functionality with our unique firm needs and processes, we remain leaders in delivering an extraordinary value proposition to our clients.”

“We’re thankful to Paul, Weiss for providing valuable insights as we have built the Workflow Builder,” said Winston Weinberg, CEO at Harvey. “The firm’s thoughtful approach to designing scalable, high-impact legal workflows makes Paul, Weiss a natural partner as we shape tools that meet the profession’s evolving needs and highest standards.”

Workflow Builder is currently available in private preview with general availability expected by the end of June.