Plaintiff-side legal AI has captured $682 million in disclosed funding, but defense-side litigation software remains underdeveloped and may represent the next major venture opportunity.

Four plaintiff-focused legal AI companies—EvenUp ($370 million), Eve ($164 million), Supio ($85 million), and Darrow ($63 million)—account for roughly $682 million combined, representing about 71% of disclosed capital for legal AI startups.

Defense-side legal AI lags because corporate legal departments and law firms managing high-volume defense work still rely on fragmented systems, spreadsheets, and email-based coordination rather than unified software platforms. Workflows also vary widely by industry, matter type, and regulatory context, making buying decisions longer and the market less standardized than plaintiff-side practices.

One emerging approach on the defense side is exposure and settlement benchmarking—using historical resolution data to estimate settlement ranges, legal spend, and case risk across similar matters. A platform aggregating and normalizing those signals across customers could build proprietary outcome data that becomes more useful with scale.