Company lists · Data refreshed September 2026

Top 25 Legal AI and machine learning companies based in the United States

Name: Legal AI and machine learning 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 4, 2026 390 companies tracked

RevenueBase identified 390 legal AI and machine learning companies headquartered in the United States as of September 2026 and tracks 18,346 professional contacts across them, including 7,068 with verified work emails and 6,590 with mobile numbers. New York is the largest hub.

This list covers legal AI and machine learning 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

390Companies

18,346Contacts tracked

7,068Verified emails

6,590Mobile numbers

Explore all 390 companies → Free signup · no credit card · 500 free credits

The 25 largest legal AI and machine learning companies based in the United States

Ranked by team size

Top 25 of 390 legal AI and machine learning companies based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names legal AI and machine learning companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	LexisnexisStrong evidence	New York City, NC, United StatesHQ checked Sep 4, 2026	10001+	9,927
	“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: company website · checked Sep 4, 2026
2	RelativityPartial evidence	Chicago, NJ, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,698
	“Relativity is a leading legal data intelligence company that builds technology to help users organize data, discover the truth, and act on it.” Source: company website · checked Sep 4, 2026
3	LiteraPartial evidence	Chicago, IL, United StatesHQ checked Sep 4, 2026	501-1,000	892
	“Litera has been at the forefront of legal technology for 25+ years.” Source: company website · checked Sep 4, 2026
4	EvenupPartial evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	501-1,000	723
	“EvenUp is the leading proactive AI platform for personal injury law, the first of its kind, built on the largest personal injury dataset.” Source: company website · checked Sep 4, 2026
5	DISCOIndirect evidence	Austin, TX, United StatesHQ checked Sep 4, 2026	501-1,000	720
	“DISCO is a litigation technology company that helps top law firms and corporations take on their biggest cases.” Source: company website · checked Sep 4, 2026
6	alphastream.aiStrong evidence	New York, United StatesHQ checked Sep 4, 2026	51-200	244
	“Alphastream is a leading AI platform delivering legal and financial intelligence purpose built for private markets by transforming unstructured documents into trusted, actionable…” Source: company website · checked Sep 4, 2026
7	Purpose LegalStrong evidence	Dallas, TX, United StatesHQ checked Sep 4, 2026	201-500	236
	“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: company website · checked Sep 4, 2026
8	Darrow AIPartial evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	197
	“The legal system is one of society's most important safeguards.” Source: company website · checked Sep 4, 2026
9	CimplifiStrong evidence	Pittsburgh, PA, United StatesHQ checked Sep 4, 2026	51-200	191
	“Cimplifi is a leading legal services provider and AI orchestrator, delivering trusted, outcome-driven solutions across eDiscovery and contract analytics.” Source: company website · checked Sep 4, 2026
10	LitifyPartial evidence	New York, LA, United StatesHQ checked Sep 4, 2026	201-500	178
	“Unleash your legal team’s full potential.” Source: company website · checked Sep 4, 2026
11	Legalon TechnologiesStrong evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	501-1,000	151
	“LegalOn is a global leader in AI for in-house legal teams.” Source: company website · checked Sep 4, 2026
12	Norm AIStrong evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	149
	“Norm Ai, the Legal Infrastructure for AI agents, has a client base with a combined $30 trillion in assets under management.” Source: company website · checked Sep 4, 2026
13	OrbitalStrong evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	97
	“Orbital is purpose-built AI for real estate legal work.” Source: company website · checked Sep 4, 2026
14	Wordsmith AIPartial evidence	New York, United StatesHQ checked Sep 4, 2026	51-200	86
	“Built for in-house legal teams.” Source: company website · checked Sep 4, 2026
15	ActforeStrong evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	51-200	81
	“ACTFORE delivers AI/ML-powered data mining response solutions for legal teams, insurance carriers, and corporations.” Source: company website · checked Sep 4, 2026
16	Recommind NOW OpentextIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	n/a	73
	“Recommind was acquired by OpenText in July 2016.” Source: company website · checked Sep 4, 2026
17	Brightleaf SolutionsPartial evidence	Brookline, MA, United StatesHQ checked Sep 4, 2026	51-200	72
	“Brightleaf provides a AI-powered service to extract information from your contracts using our own proprietary semantic intelligence/natural language processing technology, our own…” Source: company website · checked Sep 4, 2026
18	GC AIStrong evidence	San Mateo, CA, United StatesHQ checked Sep 4, 2026	51-200	62
	“GC AI is the legal AI platform built for in-house teams that solves the workflows in-house lawyers and legal professionals face every day.” Source: company website · checked Sep 4, 2026
19	LegalsifterStrong evidence	Pittsburgh, PA, United StatesHQ checked Sep 4, 2026	51-200	52
	“LegalSifter is a legal AI technology and services company that helps organizations review, manage, and optimize contracts faster, more accurately, and at lower cost.” Source: company website · checked Sep 4, 2026
20	Cognizer INCStrong evidence	Pleasanton, CA, United StatesHQ checked Sep 4, 2026	51-200	52
	“Cognizer is a contract intelligence AI vendor servicing enterprises, SaaS vendors and Legal Service Providers.” Source: company website · checked Sep 4, 2026
21	LegalmationPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 4, 2026	11-50	44
	“LegalMation leverages the latest artificial intelligence systems including GPT-4 to help corporate legal departments and law firms drive efficiency with straightforward and easily…” Source: company website · checked Sep 4, 2026
22	UnicourtIndirect evidence	Tustin, CA, United StatesHQ checked Sep 4, 2026	51-200	41
	“UniCourt is a legaltech platform for accessing litigation data, analytics and insights, providing real-time access to over state and federal courts across 40+ states.” Source: company website · checked Sep 4, 2026
23	LEGAPartial evidence	New York, United StatesHQ checked Sep 4, 2026	n/a	39
	“Lega is an LLM-Governance platform specifically designed to provide law firms and enterprises with a secure and efficient way to explore, assess, and implement generative AI…” Source: company website · checked Sep 4, 2026
24	PrecedentIndirect evidence	Charlotte, NC, United StatesHQ checked Sep 4, 2026	51-200	37
	“Precedent gives personal injury law firms a carrier-savvy advantage.” Source: company website · checked Sep 4, 2026
25	Casetext, Part Of Thomson ReutersStrong evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	51-200	34
	“Meet Casetext, the leaders of innovation in legal AI since 2013 and the developers of CoCounsel, the world's first AI legal assistant.” Source: company website · checked Sep 4, 2026

Showing 25 of 390 legal AI and machine learning companies based in the United States

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Legal AI and machine learning companies based in the United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 48 HQs

6,590Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

253

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

31–60

572

61–90

3,834

90–180

2,635

180+

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 legal AI and machine learning companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “legal AI and machine learning companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among legal AI and machine learning 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 an evidence 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, 7,068 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 4, 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.

Legal AI and machine learning companies by metro

Legal AI and machine learning companies in New York48
Legal AI and machine learning companies in San Francisco41

Frequently asked

How many legal AI and machine learning companies are there based in the United States?

RevenueBase identified 390 legal AI and machine learning 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 Raleigh, tops this list with the largest team on record.

Which city has the most legal AI and machine learning companies?

New York leads with 48 headquartered companies, followed by San Francisco (41) and Los Angeles (13).

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 7,068 verified decision-maker contacts tracked across these 390 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 4, 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 SmartSearch, 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.