Callidus Legal AI Secures $10M in Funding to Build the AI Operating System for Litigators

July 15, 2025 at 10:01 AM EDT

Callidus will use the funds to accelerate product development and expand the team to continue its impressive growth trajectory through the second half of 2025

(PRUnderground) July 15th, 2025

Callidus Legal AI, the AI platform that automates and accelerates core litigation workflows, today announced $10M in funding, bringing the company’s total funding to date to $13M. The highly oversubscribed round was led by Cervin Ventures, with participation from AI Fund, Myriad Venture Partners, Tandem Ventures, Active Capital, Capital Factory, Foley & Lardner, and a consortium of partners from a top 25 law firm. With this new capital, Callidus will continue its strong growth trajectory, double the speed of its product development to support its 1,000+ customers, and extend its market reach.

Goldman Sachs estimates 44% of the $1T legal industry will soon be automated by AI and Callidus’ current momentum and ambitious roadmap suggest the industry could grow multiples beyond the $64B estimate of industry analysts. In the first half of 2025, Callidus has tripled its recurring revenue, offering a new generation of legal solutions in its end-to-end AI operating system for litigators.

“AI has advanced to the point where substantially automating legal work is no longer a question of possibility; it’s a series of tough but solvable engineering challenges. We’re building the most advanced and interactive AI platform for litigators,” said Justin McCallon, CEO of Callidus Legal AI. “Success requires the right combination of a world-class user experience, a robustly engineered middle-layer, and high-quality legal data. Callidus brings all of that together cohesively. With the support of our partners, and on the shoulders of the research labs, we’re reinventing litigation legal tech.”

Unlike competitors that rely on chatbots and generate brief, high-level answers, Callidus produces real legal work. These outputs include exhaustive precedent research, element-by-element legal outlines, and fully drafted, citation-rich litigation documents. The highly visual Callidus research system keeps the lawyer in the loop, with the AI synthesizing robust data and the lawyer making strategic decisions, ultimately condensing a typical week-long task into about 10 minutes for 85% completion. From there, the lawyer can polish the full litigation outlines and extensive litigation draft document outputs with other Callidus tools, including tools integrated with Microsoft Word, to prepare final versions for court.

“Callidus isn’t trying to replace lawyers, it’s giving them superpowers,” said Taylor Oliver, Partner at Cervin Ventures. “Callidus turns a week’s worth of research into ten minutes of structured insight, all while keeping the attorney in the loop. That kind of precision, paired with deep respect for how law is actually practiced, is rare in legal tech. We’re backing the Callidus team because they’re not only building fast, but building right – with discipline, focus, and a deep understanding of the profession they’re supporting.”

In May, Callidus launched its most advanced legal research and drafting system to date, powered by proprietary engineering, agentic AI, and a fully integrated U.S. case law database. After gathering over 10 million U.S. legal cases, Callidus built specialized agents to enrich the database with detailed metadata, case summaries, and issue-based tagging for high-precision retrieval and research. The company plans to roll out transformative new platform features throughout the second half of 2025, with a goal of addressing the core needs of litigators across the entire litigation lifecycle by year’s end.

“What excites us about Callidus is their technical depth: custom legal reasoning models, intelligent document understanding, and end-to-end automation that mirrors how great lawyers work,” said Andrew Ng, Managing General Partner, AI Fund. “Justin McCallon and his team are building AI agentic support for litigators — a platform that represents a generational shift in legal service delivery that’s faster, smarter, and more strategically insightful. The legal industry will benefit tremendously from this approach.”

“The legal tech industry is a prime example of an industry that can be transformed by AI, and Callidus is at the forefront of this shift,” said Chris Fisher, Founder & Managing General Partner at Myriad Venture Partners, who has an extensive legal background, including prior to founding Myriad Venture Partners, advising private equity firms and multinational clients on M&A, complex transactions, early stage investments, and corporate governance. “Callidus’ AI-powered platform is already streamlining workflows for litigators, delivering solutions that meet their real-world needs. This momentum is a testament to the difficult problems and workflows Callidus is addressing and to the outstanding Callidus team. We’re excited to see what the next phase of growth looks like as Callidus continues building critical software for the legal industry.”

Callidus expects to triple its team size over the coming months, with new hires across product, engineering, customer success, and legal AI research in both Texas and California.

For more information, please visit: https://callidusai.com/.

About Callidus Legal AI

Callidus Legal AI is a next-generation legal technology company leveraging advanced artificial intelligence to automate legal research, drafting, and litigation preparation. With a proprietary case law database and deeply agentic AI infrastructure, Callidus delivers unprecedented productivity and accuracy across the most demanding areas of legal practice. To learn more information, please visit: https://callidusai.com/.

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