Big Law's outlaw has something to prove

Max Junestrand.

Martynas Justinevicius for BI

Silicon Valley loves a rivalry, and right now one of its most closely watched showdowns is unfolding in an unlikely arena: corporate law.

Harvey and Legora, two artificial-intelligence startups selling software to law firms, are jockeying for customers, credibility, and bragging rights. With this week's news that Legora raised $550 million in an investment round valuing the company at $5.5 billion and acquired the startup Walter, the Sweden-based...