Specialized legal intelligence and automation platform
for plaintiff and mass tort firms.
Defense firms bill by the hour. You don’t.
Your tools shouldn’t act like you do.
20-minute demo, live. Open the platform with us, bring the worst MTD on your desk, & we run it together.
Plaintiff Zero reads the defense’s MTD (or any other document) against your complaint side by side and surfaces the contradictions of record, the unsupported citations, & the gaps in the other side’s arguments, with the verbatim passages and appropriate citations to the record to back each finding.
The leading legal AI hallucinates 17 to 33 percent of the time. Earlier this year, attorneys before the Sixth Circuit were sanctioned for hallucinated citations from CoCounsel-drafted briefs.
Plaintiff Zero ran a benchmark from a Stanford research paper on a deliberately weaker LLM than the ones we use in production. The result: 0 hallucinations across 100 queries. The point: it’s the software architecture, not the LLM, that carries the load.
Plaintiff Zero checks every proposition, every quote, and every authority (e.g., cases, statutes, professional rules, procedural rules) in your draft. As every cite is checked and every quote is compared word-for-word, Plaintiff Zero produces a Verification Audit Log on every output.
Westlaw, LexisNexis, and other conventional research tools hand you a stack of cases to read. Plaintiff Zero hands you the quotes, pulled verbatim from the opinion text, jurisdiction-filtered, treatment-checked, ready to paste (along with the actual authority for your review).
When the defense sends 100 interrogatories, your cost to respond is near zero. Theirs is $800 an hour. The pressure flips onto the defense.
Drop a wave of production, a stack of depositions, or the full case file. Plaintiff Zero ingests every page, indexes every party, builds the timeline, surfaces the red flags, and writes the strategic guidance. Tab through the lenses for the partner-ready read.
Every brief gets faster to write the longer your firm uses the platform. Plaintiff Zero automatically caches every verified case, statute, and rule anyone pulls (full opinion text, treatment history, jurisdiction tags, drop-in quotes) and serves it back at near-zero token cost on every subsequent lookup, across matters, across attorneys, across time. The platform also learns your firm’s writing style and strategic preferences as you work, so each new draft starts closer to where you’d take it. Research costs compound down. Firm-specific intelligence compounds up.
Westlaw bills you the same on day 1,000 as on day 1.
Plaintiff Zero gets more efficient.
Upload whatever’s on your desk: a defense motion, a stack of intake records, a deposition wave, a complaint to draft from scratch, an opposition due in the morning. Plaintiff Zero generates the strategic angle, a section-by-section outline, and the draft. Run it autonomously when you want speed (and freedom from your keyboard), or paragraph-by-paragraph under your tight control.
What follows is one example workflow. Run any subset, in any order, or skip straight to one-shot drafting.
Whatever you upload is parsed: pleadings, productions, transcripts, intake packets, exhibits. Paragraphs split, citations extracted, parties indexed, exhibits attached, every record cataloged with metadata (court, date, docket, filing party, source). Nothing summarized. Everything indexed.
The platform reads what you uploaded against the rest of the case file, the controlling authority, and the procedural posture. Misstatements, gaps, contradictions, unsupported claims, missing documents, and inconsistent testimony surface with the receipts to back them.
A response structure forms around what we found. Argument tree, authority slots, factual hooks, gaps to exploit, strategy notes. Yours to edit before the draft starts.
Every authority Shepardized. Every quote checked word-for-word. Every Bluebook rule applied. No fabricated cases, no abrogated holdings, no out-of-circuit slip-ups, no claims unsupported by the record.
Full veracity pass. Citation health score. Gap detection across your draft and anything it answers. The Verification Audit Log is generated automatically. A receipt you can hand to a partner, to opposing counsel, or to a judge.
Whatever lands on your desk — indexed, juxtaposed, outlined, drafted, verified, ready for your review.
Specialized legal intelligence and automation for the side that doesn’t bill by the hour. Built for plaintiff and mass tort firms.
Intake review, document production, deposition prep all scale without another associate on the org chart. Every associate you already have becomes the version of themselves that has read every record, every deposition, every produced document, and remembers all of it on demand. A four-hour drafting block collapses to minutes, verified and Shepardized before it hits your desk.
4-hour MTD response to minutes
Drafting at near-zero marginal cost. Conventional research tools (typically $100 to $500 per attorney per month) replaced for pennies on the dollar. A completely bespoke brief in an hour. 95% cost and time compression across opposition drafting.
95% cost and time compression on opposition drafting
Every cite verified. Every Bluebook rule applied. Every quote matched word-for-word. Every gap surfaced, whether in your draft, in your associate’s draft, or in opposing counsel’s filing. A Verification Audit Log under every output, ready for the bench.
100 / 0 / 0 on the Stanford Legal AI benchmark
Case selection becomes a reading exercise, not a gut call. Effectively infinite context and superior data handling mean the entire intake file, every record, every prior pleading, every produced document, sits in working memory at once. You know which matters to take before you sign the engagement letter. Discovery review, privilege logs, and production sets that used to swallow weeks get triaged in an afternoon. The holes in your theory and the holes in theirs, surfaced before either side gets to use them.
Leverage through software.
Plaintiff Zero is built to be forgiving. Bullet points, half-formed thoughts, sentence fragments, gibberish will still get you a good answer. Invoke any tool the way that suits you — point and click in the GUI, or just describe what you want in plain English (have the agentic associate summarize the entire matter for me and suggest strategic next steps). No forms to fill out, no workflow to pick, no ontology to learn. The platform meets you where you are and figures out the rest.
The legal profession is already drowning in forms.
Plaintiff Zero (PZ) is not going to add another one.
The Agentic Associate is an autonomous agent that researches, analyzes, and executes at project scale. Drop thousands of intake forms and a deadline; it scores viability, surfaces bellwethers, and flags the strongest factual patterns by morning. Tell it to read the defense’s production and tell you what isn’t there; it comes back with the draft suggested motion. It handles the entire workflow end to end. It does what a junior associate would do, except a plaintiff firm can’t carry juniors the way the defense bar does. This one reads every page, misses nothing, works in parallel, and never logs a billable hour.
In February 2026, Heppner (S.D.N.Y.) admitted a defendant’s AI dialogues into evidence. The leading legal AI vendors stake their confidentiality on terms of service. In Heppner, terms-of-service confidentiality wasn’t enough. Plaintiff Zero is built on hardware-enforced isolation, cryptographic attestation, and zero retention by design.
Both decisions expose the same gap, and it is not doctrinal. It is architectural.
Heppner & Warner · What Every Lawyer Needs to Know About AI and Privilege
Read Heppner and Warner: What Every Lawyer Needs to Know About AI and Privilege.
Plaintiff firms front the costs. Pricing has to match. Plaintiff Zero charges by case volume and data ingested, not by per-attorney seat. Every invoice is granular, court-compliant, and built to flow through as a direct case expense.
Pass-through case expense.
Bill it as a recoverable cost under fee-shifting and contingent-fee agreements. Plaintiff Zero is designed to be paid out of the case, not the firm’s overhead.
For solos and 2–3 lawyer firms running a focused docket.
For PI, employment, civil rights, mass tort, MDL, and class action firms.
Two federal courts, one week apart, reached opposite conclusions on whether AI-assisted legal work is privileged. Plaintiff Zero is built for the architecture that protects it.
Why frontier capability + centralized billing + partner-gated distribution favors incumbents — and what it takes to build outside that gravity well.
How a mocked hypothetical in the birthright-citizenship case quietly maps the constitutional basis for global prosecutorial reach.
For CTOs, CISOs, and security auditors weighing a third option between adopting a new AI vendor and banning AI outright. Covers how the library brings shadow AI into compliance by routing through already-vetted organizational subscriptions, the three deployment architectures (Direct Subscription Utilization, Zero-Interception Routing, Zero-Knowledge Orchestrator), and why none of them creates a new data processor.
Why professional-grade legal automation respects the ethical boundaries of the profession, and serves its deeper purpose. Why a tool built for verified, citation-grade legal work is the opposite of UPL: it raises the floor on what counts as authorized practice.
The local library that routes AI inference through an organization’s existing subscriptions. No new data processor. No shadow AI. The relay never sees a developer’s system prompts, tool schemas, or proprietary logic. Secret sauce and data alike are protected by structural impossibility, not policy.
20-minute demo, live. We open the platform, you bring the worst MTD on your desk, & we run it together.
Bring an MTD →Or email contact@plaintiffzero.com directly.
Twenty minutes, live. Bring whatever’s on your desk — an MTD, a discovery production, an intake stack — and we run it together.