Company lists · Data refreshed September 2026

Top 25 AI legal operating system software companies based in the United States

Name: AI legal operating system software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 332 companies tracked

RevenueBase identified 332 AI legal operating system software companies headquartered in the United States as of September 2026 and tracks 22,044 professional contacts across them, including 9,562 with verified work emails. New York is the largest hub.

This list covers AI legal operating system software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review

332Companies

22,044Contacts tracked

9,562Verified emails

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The 25 largest AI legal operating system software companies based in the United States

Ranked by team size

Top 25 of 332 AI legal operating system software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to AI legal operating system software companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Lexisnexis	Strong evidence	New York City, NY, United StatesHQ checked Sep 14, 2026	10001+	9,835 contacts →
	Strong evidence “LexisNexis is a leading innovator of private, secure, and authoritative Legal AI solutions that help legal and business professionals draft full documents with ease, make informed…” Source: RevenueBase Database · checked Sep 14, 2026
2	Relativity	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,709 contacts →
	Partial evidence “Relativity is a leading legal data intelligence company that builds technology to help users organize data, discover the truth, and act on it.” Source: RevenueBase Database · checked Sep 14, 2026
3	Lighthouse	Strong evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	501-1,000	1,043 contacts →
	Strong evidence “Lighthouse is a global leader in eDiscovery, digital forensics, AI-driven analytics, and legal intelligence solutions, empowering legal teams, corporate counsel, and global brands…” Source: RevenueBase Database · checked Sep 14, 2026
4	Litera	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	501-1,000	900 contacts →
	Partial evidence “Litera has been at the forefront of legal technology for 25+ years.” Source: RevenueBase Database · checked Sep 14, 2026
5	Harvey	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	501-1,000	826 contacts →
	Strong evidence “Harvey is domain-specific AI for legal and professional services.” Source: RevenueBase Database · checked Sep 14, 2026
6	DISCO	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	501-1,000	712 contacts →
	Indirect evidence “DISCO is a litigation technology company that helps top law firms and corporations take on their biggest cases.” Source: RevenueBase Database · checked Sep 14, 2026
7	Evenup	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	501-1,000	707 contacts →
	Partial evidence “EvenUp is the leading proactive AI platform for personal injury law, the first of its kind, built on the largest personal injury dataset.” Source: RevenueBase Database · checked Sep 14, 2026
8	Reveal	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	501-1,000	492 contacts →
	Partial evidence “Reveal helps legal professionals solve complex discovery problems.” Source: RevenueBase Database · checked Sep 14, 2026
9	ONIT	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	501-1,000	457 contacts →
	Strong evidence “Onit is the global leader in AI-native legal operations solutions, transforming legal business processes with purpose-built technology.” Source: RevenueBase Database · checked Sep 14, 2026
10	Linksquares	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	286 contacts →
	Partial evidence “LinkSquares is the leading AI-powered contract lifecycle management platform, trusted by more than 1,200 customers, including DraftKings, ProPharma, and TIME.” Source: RevenueBase Database · checked Sep 14, 2026
11	Knovos	Strong evidence	Tampa, FL, United StatesHQ checked Sep 14, 2026	201-500	246 contacts →
	Strong evidence “For 23 years, Knovos has dedicated its engineering resources to automate, integrate, and innovate AI-powered solutions for legal information management.” Source: RevenueBase Database · checked Sep 14, 2026
12	Purpose Legal	Strong evidence	Dallas, TX, United StatesHQ checked Sep 14, 2026	201-500	236 contacts →
	Strong evidence “ABOUT US Purpose Legal is an AI-first legal services company delivering integrated technology, review expertise, and specialized legal staffing for law firms, corporations, and…” Source: RevenueBase Database · checked Sep 14, 2026
13	Legalease Solutions	Strong evidence	Plymouth, MI, United StatesHQ checked Sep 14, 2026	201-500	209 contacts →
	Strong evidence “LegalEase Solutions, also referred to as LegalEase, is a US-based AI powered legal solutions provider helping legal, compliance, and business teams manage complex, high-volume…” Source: RevenueBase Database · checked Sep 14, 2026
14	Darrow AI	Strong evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	201 contacts →
	Strong evidence “The legal system is one of society's most important safeguards.” Source: RevenueBase Database · checked Sep 14, 2026
15	Cimplifi	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 14, 2026	51-200	194 contacts →
	Strong evidence “Cimplifi is a leading legal services provider and AI orchestrator, delivering trusted, outcome-driven solutions across eDiscovery and contract analytics.” Source: RevenueBase Database · checked Sep 14, 2026
16	Torticity	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 14, 2026	201-500	182 contacts →
	Partial evidence “Torticity is the future of legal case management.” Source: RevenueBase Database · checked Sep 14, 2026
17	Litify	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	175 contacts →
	Partial evidence “Unleash your legal team’s full potential.” Source: RevenueBase Database · checked Sep 14, 2026
18	Brightflag	Strong evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	167 contacts →
	Strong evidence “Brightflag is the intuitive, AI-powered Enterprise Legal Management platform that empowers corporate legal teams and outside counsel to unlock business growth.” Source: RevenueBase Database · checked Sep 14, 2026
19	Legalon	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	501-1,000	154 contacts →
	Strong evidence “LegalOn is a global leader in AI for in-house legal teams.” Source: RevenueBase Database · checked Sep 14, 2026
20	Assembly Software	Strong evidence	Coral Gables, FL, United StatesHQ checked Sep 14, 2026	51-200	145 contacts →
	Strong evidence “Assembly Software is redefining how plaintiff law firms run their practice: combining AI-powered case management, workflow automation, and 40+ years of expertise to help firms…” Source: RevenueBase Database · checked Sep 14, 2026
21	Hazen Technologies INC	Indirect evidence	Parkland, FL, United StatesHQ checked Sep 14, 2026	201-500	137 contacts →
	Indirect evidence “At HazenTech, we help U.S.” Source: RevenueBase Database · checked Sep 14, 2026
22	Persuit	Partial evidence	New York, United StatesHQ checked Sep 14, 2026	51-200	122 contacts →
	Partial evidence “PERSUIT is redefining how legal teams select and manage outside counsel by mobilizing value-based pricing models from matter intake to invoice review and payment.” Source: RevenueBase Database · checked Sep 14, 2026
23	Lexicon	Partial evidence	Chesterfield, MO, United StatesHQ checked Sep 14, 2026	51-200	89 contacts →
	Partial evidence “Lexicon is a legal services and technology provider with deep expertise in the legal industry.” Source: RevenueBase Database · checked Sep 14, 2026
24	Intelagree	Strong evidence	Tampa, FL, United StatesHQ checked Sep 14, 2026	51-200	82 contacts →
	Strong evidence “IntelAgree is an AI-powered contract lifecycle management (CLM) platform that helps legal teams do impactful work, not busy work.” Source: RevenueBase Database · checked Sep 14, 2026
25	Knowledgelake	Partial evidence	Saint Louis, MO, United StatesHQ checked Sep 14, 2026	51-200	70 contacts →
	Partial evidence “KnowledgeLake is an AI-powered document automation company.” Source: RevenueBase Database · checked Sep 14, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: AI legal operating system software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names AI legal operating system software companies.
Partial evidence: Its own public description names part of AI legal operating system software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name AI legal operating system software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 332 AI legal operating system software companies based in the United States

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AI legal operating system software companies based in the United States at a glance

As of Sep 14, 2026

43.4%Verified-email coverage

66.4Average contacts per company

1-10Median size (employees)

13.9%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

189

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 332 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among AI legal operating system software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “AI legal operating system software companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names AI legal operating system software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among AI legal operating system software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 9,562 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 14, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

AI legal operating system software companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names AI legal operating system software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many AI legal operating system software companies are there based in the United States?

RevenueBase identified 332 AI legal operating system software companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Lexisnexis, headquartered in New York City, tops this list with the largest team on record.

Which city has the most AI legal operating system software companies?

New York leads with 46 headquartered companies, followed by San Francisco (36) and Austin (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,562 verified decision-maker contacts tracked across these 332 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.