Manifest OS, a company powering a new generation of AI-native law firms built on fixed-fee and outcomes-based pricing, has raised $60 million in a Series A round at a $750 million valuation, which the company describes as the largest Series A in legal technology history. The round was led by Menlo Ventures alongside Kleiner Perkins, First Round Capital, and Quiet Capital.
The company was founded by Dan Mishin, an immigrant entrepreneur who experienced firsthand the cost and opacity of the U.S. legal system while navigating immigration proceedings. Manifest OS is built around the premise that the billable hour, which accounts for approximately 90% of all spend across a U.S. legal industry worth roughly $400 billion, is the primary barrier to accessible legal services. An estimated 80% of American businesses and consumers cannot afford to hire a lawyer when they have a legal need, while billing rates rose an average of 7.4% in 2025, with some reaching $3,000 per hour.
Rather than selling AI software to existing law firms, Manifest OS partners with attorneys to build AI-native practices from the ground up under the Manifest Law brand. The model has three components: a unified brand with consistent quality standards and transparent pricing, a proprietary AI-native software platform covering client communications, legal research, document drafting, billing and reporting, and a centralized back-office operation handling intake, business development, quality assurance, and collections. Lawyers focus exclusively on legal work and client advocacy while Manifest OS handles the rest.
Manifest OS incubated its first law firm in the business immigration market under Arizona’s alternative business structure program. Eighteen months in, the platform has handled more than 3,000 client engagements, achieved a visa approval rate 15% higher than the national average, and delivers client response times three times faster than traditional firms. More than 100 immigration attorneys have joined, selected from a pool of more than 5,000 applicants, with fewer than 1% accepted. The platform has supported more than 150 corporate immigration programs ranging from startups to leading technology companies.
The new capital will be used to expand immigration services globally and extend the Manifest OS model into additional practice areas. The company plans to continue reinvesting profits into its R&D engine rather than distributing them as partner bonuses, with the goal of systematically reducing the cost of high-quality legal services over time.
KEY QUOTES:
“To truly shift the market to outcomes-based pricing and to democratize access to high-quality legal services for clients, we needed to rethink the entire business model of a law firm from the ground up. We made the hard choice to not sell our AI software to existing law firms who are often beholden to billing customers more hours as a means to better compensation. Instead, we partner with forward-thinking lawyers to help them become market leaders in their respective practice areas, with AI at their core from day zero. We’ve shown this works for lawyers and for clients. Now we’re going to expand it to unify immigration services globally.”
Dan Mishin, Founder and CEO, Manifest OS
“Manifest OS is taking a differentiated approach to the legal industry by building or supporting a series of AI-native law firms. Manifest OS powers the entire legal practice, from business development to AI tools, and goes after one of the largest market opportunities in the industry. Selling AI-native services is where a lot of the industry’s value will be concentrated, and Manifest OS is uniquely positioned to build a category-defining market leader.”
Ilya Fushman, Managing Partner, Kleiner Perkins
“Choosing a lawyer is often a critical and important decision for companies, but it’s expensive and comes with unpredictable quality. It was clear to us that the right team, building with AI at their core, would offer step-function improvements in both economics and speed. We found that in Manifest OS they have a deep understanding and respect for legal excellence, an intense sense of urgency, and a relentless pursuit of operational rigor and efficiency. We’re inspired by their opportunity to build a category-defining business here.”
Shawn Carolan, Partner, Menlo Ventures
“I’ve spent my career as a general counsel for some of the largest tech companies in the world and seen firsthand how the billable hour model creates friction on both sides of the table. Companies want fee transparency, predictability, and speed. Lawyers want to focus on delivering results, not justifying billable hours. Manifest OS’s model and use of advanced technology align those interests in a way the traditional system simply doesn’t.”
David Schellhase, Former General Counsel, Salesforce, Groupon and Slack
