EvenUp vs Supio vs Eve

The short version

EvenUp, Supio and Eve are the three best-funded AI vendors selling to plaintiff firms. Each began with medical records and drafting, and each now sells something broader. They have split three ways:

• EvenUp will do the work for you, up to running pre-litigation with its own case managers.
• Supio works inside the case management system you already have and writes back to it.
• Eve wants to be the AI system your team works in, across more practice areas than the other two.

All three sell by quote. All three publish strong outcome claims that are self-reported.

Scale and backing

EvenUp has raised $385M, most recently a $150M Series E in October 2025 at a valuation over $2B, with RELX's venture arm among its investors. It says it serves 2,000+ PI firms and 30% of the top 100.

Eve raised a $103M Series B in September 2025 at a valuation over $1B, led by Spark Capital, after a $47M Series A. Its site claims 1,200+ customers.

Supio has raised $91M, including a $60M Series B in April 2025 with Thomson Reuters Ventures participating. It says its customer base more than doubled in the first half of 2026 but gives no count.

Each has a research partner or module. EvenUp's Companion includes Lexis+ with Protégé after a September 2026 alliance with LexisNexis. Supio connects to Westlaw Advantage through Thomson Reuters. Eve lists its own research module.

Practice coverage and integrations

This is where the three differ most for a mixed-practice firm. EvenUp markets personal injury only. Supio markets plaintiff law with PI and mass torts named. Eve lists personal injury, labor and employment, medical malpractice, Social Security disability and workers' comp, and it has a dedicated employment page covering charge drafting, demands and discovery.

If your docket is mostly employment, Eve is the one of the three built to talk to you. None of the three shows a California workers' comp workflow with QME, IMR and WCAB tools on the pages we checked.

Fitting into your systems

EvenUp's integrations page names Litify, SmartAdvocate and CASEpeer, with no integration setup fee. Supio's names Litify, SmartAdvocate, MyCase, CASEpeer, Smokeball, Jove and Neostella, and Supio powers LitifyAI Instant Demands inside Litify. Eve has a Clio integration page. Filevine is not named by any of the three on the pages we checked; Filevine sells its own AI. If you run Filevine or Needles, ask each vendor exactly how files move.

Litigation and pricing

Litigation

EvenUp sued Eve in September 2025 in the Northern District of California (4:25-cv-08199-YGR), alleging trade secret misappropriation through employee recruiting. AI.Law sued Eve for patent infringement in June 2026. Both suits are pending, and both rest on allegations no court has decided. See EvenUp vs Eve for the details and the current docket status.

Pricing

None of the three publishes a price. EvenUp describes case-based pricing; a competitor estimates about $300 base per demand, more with add-ons. Another competitor estimates Eve at $100 to $500 per user per month. Supio is quote-only. Because the models differ (per case, per seat, bundled), the only fair comparison is a written quote from each on the same caseload. Our demand letter software cost guide lists the questions to ask, including how cases that never reach a demand are billed.

How to choose

1. Pick EvenUp if you want output delivered or want to outsource pre-litigation.
2. Pick Supio if you want to keep your case management system and have the AI write back to it.
3. Pick Eve if you run employment or mixed dockets, or want nightly review of every matter.

Then run a bake-off: the same five closed files through each, graded by your own attorneys. Head-to-heads: EvenUp vs Supio, Eve vs Supio.

Where PlaintiffStack fits

All three add AI on top of a case management system, or ask you to work around one. PlaintiffStack is the case management system, with AI case tools built in, for California PI, workers' comp and employment. It is $250 per case with every app included; AI usage is billed separately, with an estimated cost before each run. A person accepts every fact, deadline and task an agent proposes. It reads searchable PDFs, Word and text files only; there is no OCR yet, so scans and faxes are not read. See PlaintiffStack vs EvenUp, vs Supio and vs Eve.