Manifest OS raises $60M Series A at $750M to end the billable hour in law
What’s the deal? Manifest OS has raised $60M in a Series A at a $750M valuation — the largest Series A in legal technology history, according to the company. The round was led by Menlo Ventures, with Kleiner Perkins, First Round Capital, and Quiet Capital also participating.
Quiet Capital was the first and only investor in the pre-seed, doubled down at seed, and co-led this Series A. The company is emerging from two years of stealth.
Why now? Most legal AI companies sell software tools to existing law firms. Manifest OS takes a fundamentally different approach: it builds and powers entire AI-native law firms from the ground up, replacing the industry’s dominant billable-hour model with fixed-fee, outcomes-based pricing.
The US legal market is worth roughly $400B, but an estimated 80% of businesses and consumers cannot afford to hire a lawyer when they need one. Billing rates rose 7.4% on average in 2025 and can reach $3,000 per hour. The billable hour accounts for about 90% of all legal spending, creating a system where law firms are financially incentivised to work slowly rather than efficiently.
Manifest OS offers three things in one package: a shared brand (Manifest Law), a proprietary AI platform that handles research, drafting, communications, and billing end-to-end, and a centralised back office that takes care of everything from client intake to quality assurance. Lawyers focus solely on legal work. The model launched in business immigration under Arizona’s alternative business structure programme, which allows non-lawyers to hold economic interests in law firms.
Eighteen months in, the platform has handled over 3,000 client engagements with a visa approval rate 15 percentage points above the national average, response times three times faster than traditional firms, and more than 100 immigration attorneys selected from over 5,000 applicants — an acceptance rate below 1%.
What could go wrong? The $750M valuation on a first institutional round is eye-catching for a company still operating in a single practice area. Expanding beyond immigration into other legal domains will require recruiting specialist lawyers, navigating different regulatory frameworks, and proving the model works in less procedural, more adversarial areas of law.
Arizona’s ABS programme is the regulatory enabler, but most US states do not yet permit non-lawyer ownership of law firms. Scaling nationally will depend on either regulatory change or creative structuring. And while $6B was invested in legal tech last year, most of it flowed to tools for existing firms — Manifest’s model of competing with law firms, rather than selling to them, may invite resistance from the profession.
The signal: The round’s investor lineup — Menlo Ventures, Kleiner Perkins, First Round Capital — reflects a bet that the real value in legal AI lies in delivering legal services directly, not in building tools for an industry structured around the billable hour. As Kleiner Perkins managing partner Ilya Fushman put it: “Selling AI-native services is where a lot of the industry’s value will be concentrated.”
If Manifest OS can replicate its immigration results across other practice areas, it would represent a structural shift in a $400B industry that has resisted technology-driven disruption for decades.
Sources:
Bloomberg
Manifest OS
Pulse 2.0
Michael Bloch, LinkedIn article
Image credit:
Manifest OS
J.V.
