Brazilian legal AI startup Enter has tripled its valuation to $1.2 billion in a $100 million round led by Peter Thiel's Founders Fund, with Sequoia Capital and Ribbit Capital participating, according to reports published May 5, 2026. The deal closes less than eight months after the company's $35 million Series A — also led by Founders Fund and Sequoia — set a $350 million price tag.
The round vaults the São Paulo-based company into the upper ranks of Latin American AI startups and signals that Western frontier investors increasingly see legal AI as a category where local data depth, not model novelty, drives durable advantage.
A founder built for the pitch
Enter was founded in 2023 by Mateus Costa-Ribeiro, who reportedly became Brazil's youngest practicing lawyer at 18, graduated from Harvard Law, passed the New York Bar at 20, and left a full-ride Stanford MBA to start the company. That biography is unusual enough that it has become a recurring talking point for investors describing why they wrote the check.
The company sells software to law firms and in-house legal teams handling high volumes of litigation. Its AI agents help with case intake, fraud detection, settlement recommendations, drafting defenses, and interpreting rulings, with human lawyers reviewing every output before it reaches a court or counterparty.
Why Brazil is the data moat
The headline number for prospective backers is jurisdictional: Brazil has roughly 80 million active lawsuits at any given moment, around eight times the active US caseload. Procedural complexity, mandatory digital court filings, and a litigious consumer-finance sector produce structured data at a scale that purely English-language competitors cannot easily replicate.
Enter says it processes more than 250,000 new cases per year for customers reportedly including Itaú, Santander, Mercado Livre, Nubank and Airbnb — a customer list weighted toward financial services and marketplaces, the two industries that generate the bulk of Brazilian litigation.
Where it sits versus Harvey and Legora
At $1.2 billion, Enter is a fraction of the $11 billion valuation legal AI peer Harvey reached in March, and below European challenger Legora, which last week added Nvidia to its $5.6 billion-valuation Series D extension. But on velocity — tripling in under eight months — Enter is moving faster than either Western comparable.
Implications
For founders outside the US, the round is a useful data point. Frontier investors are now willing to pay unicorn-tier prices for AI applications grounded in non-English regulatory regimes, provided the local data and distribution moats look defensible. For incumbents like Thomson Reuters and LexisNexis, it is another reminder that the legal-tech map of 2026 is being redrawn fastest in the markets they have historically under-served.
— Michael Ouroumis
