Harvey partners with DeepJudge on legal AI workflow

Harvey has partnered with DeepJudge, linking Harvey's legal AI tools with DeepJudge's institutional knowledge system for law firms and in-house legal teams.

The arrangement is intended to bring an organisation's prior work, internal decisions and accumulated legal expertise into day-to-day AI-assisted tasks, including research, drafting, analysis and decision-making within legal workflows.

DeepJudge's system draws on a legal team's historical documents, matters and negotiated positions while maintaining existing access permissions and ethical walls. Work created in Harvey is then reflected back into DeepJudge, creating a feedback loop in which new matters add to the organisation's knowledge base.

The partnership targets a longstanding issue in legal technology: firms often hold years of knowhow across memos, transaction files and litigation records, but that material is spread across systems and can be hard to apply consistently. By connecting Harvey's tools with DeepJudge's search and retrieval layer, the companies aim to make prior internal practice easier to surface during active legal work.

Knowledge gap

The legal sector has become a key testing ground for generative AI, as suppliers seek to tailor large language models to highly regulated, document-heavy work. One obstacle to adoption has been whether AI-generated output reflects a firm's accepted language, prior positions and internal standards rather than generic legal reasoning.

Paulina Grnarova, Chief Executive Officer and Co-Founder of DeepJudge, said the link is intended to address that problem by putting internal context alongside AI reasoning.

"Legal AI has made remarkable progress on reasoning, and Harvey is a testament to that. DeepJudge brings past work, decisions, and institutional expertise directly into that reasoning, so that the resulting work reflects the judgment, standards, and ways of working unique to each firm or legal department. Together, DeepJudge and Harvey enable legal professionals to manage the full arc of legal work seamlessly, while ensuring AI outputs are grounded in how they actually practice," Grnarova said.

Harvey is used by more than 1,500 customers across 60 countries, spanning law firms and large corporate legal departments, according to the company. DeepJudge said it operates in North America and Europe and is used by law firms and in-house teams seeking to organise and retrieve internal legal knowledge.

The companies described a workflow in which lawyers can move from research to drafting and then to decision-making using both systems. In that setup, users can identify relevant material from similar matters, draw on accepted wording from past work and compare current questions with earlier analyses across teams and practice areas.

Law firm use

Winston Weinberg, Chief Executive Officer and Co-Founder of Harvey, said many firms already have extensive internal expertise but struggle to apply it consistently.

"DeepJudge knows your firm through every past matter, memo, and negotiated position. Most firms have decades of expertise embedded across prior work and decisions, but that knowledge is often fragmented and difficult to apply consistently in practice. This partnership closes that gap by bringing a firm's institutional knowledge directly to Harvey users, enabling legal teams to ground their work in prior expertise and run their practice on a system that reflects how they actually operate," Weinberg said.

One early customer example came from Holland & Knight, where the systems are being used together in drafting. The firm said the combination allows lawyers to check whether outputs match material already accepted internally.

"When drafting in Harvey, we rely on DeepJudge to ensure everything we produce reflects what's actually accepted within our firm. Harvey accelerates how we work, while DeepJudge grounds every output in our experience and judgment. Together, they bring our firm's unique thinking into every document, turning AI into a true differentiator," said Martin Durkin, Partner at Holland & Knight.

The agreement reflects a broader shift in the legal AI market from standalone document review and drafting tools towards systems that can work with an organisation's own records and internal precedents. For law firms, that raises questions not only about speed and cost, but also about whether AI can reproduce the patterns of judgment clients expect from a specific practice.

DeepJudge was founded by former Google researchers with doctorates in AI from ETH Zurich. Harvey has positioned itself as a software supplier to legal and professional services organisations, with products covering contract analysis, due diligence, compliance and litigation.