Swedish legal AI startup Legora raised a $50 million Series D extension led by Nvidia's NVentures and Atlassian, pushing its valuation to $5.6 billion.

The round comes just one month after Legora's $550 million Series D and marks NVentures' first investment in legal AI technology. The startup crossed $100 million in annual recurring revenue during the interval between rounds.

Legora now trails rival Harvey by valuation — Harvey reached $11 billion last month when Sequoia Capital tripled down on its investment. Both companies are racing to dominate the legal AI market with massive war chests.

The battle for legal AI supremacy

Legora claims more than 1,000 law firms and in-house legal teams across 50 markets use its platform, launched just 18 months ago. Clients include Bird & Bird, Cleary Gottlieb, and Linklaters.

Harvey counters with 100,000 lawyers across 1,300 organizations, including global firms like Hengeler Mueller and Latham & Watkins plus corporate teams at T-Mobile and Bridgewater.

Both startups are expanding into each other's home territories. Legora has opened multiple US offices while Harvey pushes into Europe, recently landing Eversheds Sutherland.

The rivalry has spilled into marketing campaigns. Harvey signed actor Gabriel Macht, who plays lawyer Harvey Specter in "Suits", for brand partnerships. Legora responded by hiring actor Jude Law for its own advertising push.

Legora's Series D extension included other new financial investors alongside NVentures and Atlassian. The Y Combinator alumnus previously raised from high-profile venture firms but emphasizes its blue-chip client roster over investor names.

Both companies are betting legal professionals will adopt AI tools to streamline research, drafting, and review processes. The market appears large enough to support multiple billion-dollar players as law firms accelerate technology adoption.