Supio and Eve both sell AI to plaintiff personal-injury firms, and both turn a stack of medical records into a settlement demand. The split is what each one builds around. Supio is a case-workup engine: its core unit is the medical record, and the product exists to turn thousands of pages of treatment history into a chronology, a damages picture, and a demand — with Westlaw research wired in through the Thomson Reuters partnership so the authority behind a motion or demand is grounded, not guessed. Eve is a case-lifecycle platform: it runs from a 24/7 AI voice agent at intake, through the demand, into discovery in both directions, deposition and motion analysis, and a nightly Auditor that hunts for value the firm left on the table. The deciding question is not which drafts a better demand — both draft a competent one. It is whether your bottleneck is the records-to-workup pipeline itself, or the whole file around it.
Where Supio wins
Medical-record depth is the whole design. PI cases turn on how fast and how completely a firm can convert treatment records into a chronology and a damages number. Supio attacks that specific step: it reports roughly 80 paralegal hours reclaimed per case and $500–1,000 saved per case (Supio’s own customer figures, not an independent study). When your constraint is a paralegal drowning in records, that is the exact line Supio cuts — and it is a narrower, deeper claim than Eve’s lifecycle breadth.
Westlaw grounding through Thomson Reuters. Supio raised its $60M Series B in April 2025 with Thomson Reuters Ventures joining, and deepened the product tie in April 2026: Westlaw Advantage — Deep Research, AI Jurisdictional Surveys, and a Litigation Document Analyzer — is reachable from inside Supio through CoCounsel Legal. When a demand or motion has to cite real authority, that grounding is a differentiator Eve does not match; Eve’s strength is workflow coverage, not a research corpus behind the citation.
Purpose-built for the PI lifecycle, integrated where these firms live. The modules — Medical Chronologies, Case Ledger, Demand Letters, Exhibit Builder, Litigation Drafting — map to the PI file, and it integrates with the case-management systems these shops actually run: Clio, Litify, MyCase, and CasePeer. Firm-level features (Cross-Case Analysis, a firm knowledge base) reuse a firm’s own prior work across matters.
Momentum and institutional proof. Supio reports ARR quadrupling since its Series A, $1B-plus in settlements, a $24M jury verdict, and more than 27,000 PI cases run through the platform — the reassurance a managing partner wants before standardizing a firm on one vendor.
Where Eve wins
The full intake-to-litigation lifecycle in one platform. Eve covers the case from a 24/7 AI voice agent fielding intake calls, through demands and complaints in the firm’s voice, into discovery it both propounds and responds to, plus deposition and motion analysis. Supio anchors on records-to-workup and expands outward; Eve spans the whole file. If you are stitching point tools around drafting and intake, Eve collapses more of them.
The Auditor. A nightly scan flags missed value drivers across open cases — untreated TBIs, MRIs ordered but never taken, mass-tort eligibility. Supio’s Cross-Case Analysis reuses prior work, but there is no named Supio equivalent to a standing scan that surfaces money the firm already had a claim to. That is a different value proposition than working a file up faster.
Broader practice coverage. Eve serves labor-and-employment firms as well as personal injury, so a contingency shop running both keeps one platform. Supio is PI and mass-tort only — if your caseload is purely medical-records-heavy, that focus is a feature, but it is a ceiling the moment you take on employment matters.
Scale and throughput proof. Eve reports processing more than 200,000 cases a year, firms recovering over $3.5B collectively, a 2.5x case-capacity lift, and SOC 2 Type 2 plus HIPAA — table stakes when the corpus is protected health information, but worth confirming on both sides.
Pricing reality
Neither vendor publishes a price; both are demo-gated and quoted on firm size, seat count, and case or records volume, so the bands below are third-party market estimates, not quotes. Eve’s class benchmarks at roughly $100–300 per user per month. Comparable medical-record-and-litigation AI of Supio’s class lands around $150–400 per user per month — so Supio’s proxy band sits at or above where Eve’s begins, consistent with Supio metering on records volume and the depth of the case-management integration. The trade is direct: Supio’s line buys records-extraction depth and Westlaw-grounded research in one tool; Eve’s lower band buys lifecycle breadth you operate across intake, discovery, and the Auditor. Price both the same way — hours of workup removed per file and settlement value gained — because at high volume the per-file math, not the headline seat rate, decides it. Confirm how each meters “output” (per seat vs. per case vs. records volume) before you sign; that meter, not the sticker, is what scales with your caseload.
Implementation and procurement
Both are software rollouts: wire your case-management system, set the firm’s voice, and your team drafts and reviews. Two buyer-specific notes. On Supio, you are feeding it protected health information — it states HIPAA, PHIPA, and GDPR compliance and SOC 2 Type II, but the compliance posture is your liability: sign a BAA, confirm where records are stored and whether they train models, and check data residency before client records go in. On Eve, weigh the pending litigation: in June 2026, AI.Law filed a patent-infringement suit against Eve and its parent Butler Labs in the Northern District of California (case 3:26-cv-05930), over methods for converting unstructured material into long-form formatted documents. The merits are unresolved and this is not a verdict on the product, but a pending IP claim over a core drafting method is a service-continuity question. Guard: ask Eve for indemnification and service-continuity terms covering the litigation, and keep the first contract term short.
Verdict
Pick Supio when the bottleneck is medical-record-heavy case workup — massive treatment-record sets where chronology accuracy and extraction are the whole game — and you want Westlaw-grounded research living in the same tool as the file. Best fit: high-volume, records-heavy PI and mass tort (auto, premises, med-mal).
Pick Eve when your constraint is everything around the workup — intake, discovery in both directions, litigation prep, and the missed value the Auditor catches — you want one platform across the lifecycle, and especially if you also run labor-and-employment matters. Weigh the pending AI.Law litigation as a procurement risk, not a product flaw.
Pick neither when the work is legal research, in-house, or BigLaw rather than plaintiff contingency — that is Harvey, Legora, or CoCounsel territory — or when the job is specifically demand-package generation and settlement-value estimation at volume, where EvenUp leads with a comparable-verdict database and a human-review layer. A smaller firm that wants only demands and chronologies without an enterprise commitment should look at ProPlaintiff (roughly $99–249/user/month) first.
If you can’t decide, route on the bottleneck: a firm whose constraint is turning records into a workup should default to Supio for the extraction depth and Westlaw grounding; a firm trying to remove manual work across the whole file — intake to litigation — should default to Eve. You can layer the other in later, but most firms only have budget to lead with one.
Supio and Eve both sell AI to plaintiff personal-injury firms, and both turn a stack of medical records into a settlement demand. The split is what each one builds around. Supio is a case-workup engine: its core unit is the medical record, and the product exists to turn thousands of pages of treatment history into a chronology, a damages picture, and a demand — with Westlaw research wired in through the Thomson Reuters partnership so the authority behind a motion or demand is grounded, not guessed. Eve is a case-lifecycle platform: it runs from a 24/7 AI voice agent at intake, through the demand, into discovery in both directions, deposition and motion analysis, and a nightly Auditor that hunts for value the firm left on the table. The deciding question is not which drafts a better demand — both draft a competent one. It is whether your bottleneck is the records-to-workup pipeline itself, or the whole file around it.
Where Supio wins
Where Eve wins
Pricing reality
Neither vendor publishes a price; both are demo-gated and quoted on firm size, seat count, and case or records volume, so the bands below are third-party market estimates, not quotes. Eve’s class benchmarks at roughly $100–300 per user per month. Comparable medical-record-and-litigation AI of Supio’s class lands around $150–400 per user per month — so Supio’s proxy band sits at or above where Eve’s begins, consistent with Supio metering on records volume and the depth of the case-management integration. The trade is direct: Supio’s line buys records-extraction depth and Westlaw-grounded research in one tool; Eve’s lower band buys lifecycle breadth you operate across intake, discovery, and the Auditor. Price both the same way — hours of workup removed per file and settlement value gained — because at high volume the per-file math, not the headline seat rate, decides it. Confirm how each meters “output” (per seat vs. per case vs. records volume) before you sign; that meter, not the sticker, is what scales with your caseload.
Implementation and procurement
Both are software rollouts: wire your case-management system, set the firm’s voice, and your team drafts and reviews. Two buyer-specific notes. On Supio, you are feeding it protected health information — it states HIPAA, PHIPA, and GDPR compliance and SOC 2 Type II, but the compliance posture is your liability: sign a BAA, confirm where records are stored and whether they train models, and check data residency before client records go in. On Eve, weigh the pending litigation: in June 2026, AI.Law filed a patent-infringement suit against Eve and its parent Butler Labs in the Northern District of California (case 3:26-cv-05930), over methods for converting unstructured material into long-form formatted documents. The merits are unresolved and this is not a verdict on the product, but a pending IP claim over a core drafting method is a service-continuity question. Guard: ask Eve for indemnification and service-continuity terms covering the litigation, and keep the first contract term short.
Verdict
If you can’t decide, route on the bottleneck: a firm whose constraint is turning records into a workup should default to Supio for the extraction depth and Westlaw grounding; a firm trying to remove manual work across the whole file — intake to litigation — should default to Eve. You can layer the other in later, but most firms only have budget to lead with one.