PlaintiffStack vs Eve

What Eve does

Eve sells AI to plaintiff firms and, in June 2026, recast its product as EveOS, which it calls an AI operating layer for plaintiff lawyers. EveOS brings together AI agents that draft, propound and respond to discovery, request records and make routine calls; Eve Intake, a voice agent that answers calls, scores leads and can send engagement letters; Eve Auditor, which reviews active matters each night; Eve Research, a database of court opinions; and Eve Atlas and Eve Analyst, a case data layer and plain-language reporting tool that were in beta at launch.

Eve raised a $103M Series B in September 2025 led by Spark Capital at a valuation over $1B, after a $47M Series A led by a16z. At the EveOS launch it reported more than 1,400 plaintiff firms and 200,000 active matters.

Where Eve is strong

• Breadth of practice. Eve markets to personal injury, labor and employment, medical malpractice, disability and workers' comp firms. It is one of the few large AI vendors with explicit employment tools, such as discovery responses. Its workers' comp page claims chronologies from full medical files including faxes and scanned charts, average weekly wage and impairment math under the state's rating standard, and drafting of petitions, stipulations and compromise and release agreements formatted to the state board, with firms uploading their own state's statutes and rating guides.
• Agents that do work. Intake, records requests and follow-up calls are handled by agents, which can take real load off staff.
• It sits over your system. Eve says EveOS complements case management software rather than replacing it, so you don't have to migrate.
• Momentum. Eve has grown quickly and ships often.

One thing to know when you diligence any vendor: in September 2025 EvenUp sued Eve's parent company in federal court in California, alleging trade-secret misappropriation tied to former employees. These are allegations, not findings, and we found no public statement from Eve about them. Ask about it if it matters to your procurement.

Where PlaintiffStack differs

PlaintiffStack is the case management system, with AI case tools inside it. Intake, matters, tasks, the calendar, documents, the client portal, the settlement statement and lien tracking share one record with the agents. Agents propose facts, deadlines and tasks with the document, page and words they came from, and a person accepts each one. The case summary is the exception: an agent rewrites it, and earlier versions can be restored.

It is built on California rules. For employment, that means a legal chronology of protected activity and adverse actions, a wage and penalty audit, a pre-litigation demand, and checks for civil filing deadlines after a CRD right-to-sue notice and for tolling agreements ending. For workers' comp, it means a benefits audit, a QME cover letter and records index, and IMR deadline checks. See Court rules and Case watch.

The limits are real:

• California only. Eve serves firms nationally; PlaintiffStack doesn't support other states.
• No OCR yet. Scans and faxes aren't read; Eve says it reads both.
• No PD rating calculator. PlaintiffStack doesn't compute permanent disability ratings; Eve's comp page says it applies the state's rating standard.
• No AI voice intake. PlaintiffStack's intake is for your staff, and it has no automatic capture from web forms or ads.
• No case-law research. Eve has a research product; PlaintiffStack doesn't.

Pricing

Eve doesn't publish prices. PlaintiffStack is $250 per case, every app included, with no monthly fee and no long lock-in contract. AI usage is billed separately, with an estimated cost shown before each tool runs; how usage is billed is part of your quote. Because Eve runs over your case management system, compare Eve plus your current CMS against PlaintiffStack alone. See pricing.

Who should pick which

Pick Eve if you want a broad set of AI agents over the system you already have, or you practice across many states or practice areas. Pick PlaintiffStack if you're a California PI, comp or employment firm that wants the system of record and its AI in one place, at a published per-case price. Compare more in Eve vs Supio, EvenUp vs Eve and the best AI for employment lawyers.