Company lists · Data refreshed September 2026

Top 25 AI lead generation services worldwide

Name: AI lead generation services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 17,035 companies tracked

RevenueBase identified 17,035 AI lead generation services worldwide as of September 2026 and tracks 116,721 professional contacts across them, including 21,739 with verified work emails. The United States is the largest market and London the largest hub.

This list covers AI lead generation services worldwide, 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 27, 2026. Country and city lists for AI lead generation services follow the table.

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 27, 2026 86% judged on-target in blind review

17,035Companies

116,721Contacts tracked

21,739Verified emails

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The 25 largest AI lead generation services worldwide

Ranked by team size

Top 25 of 17,035 AI lead generation services worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to AI lead generation services: 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	Zoominfo	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,029 contacts →
	Indirect evidence “ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.” Source: RevenueBase Database · checked Sep 27, 2026
2	THRYV	Partial evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,412 contacts →
	Partial evidence “Thryv is an AI-powered platform built to help small businesses get found, win customers, and drive repeat sales.” Source: RevenueBase Database · checked Sep 27, 2026
3	Denave	Partial evidence	Noida, IndiaHQ checked Sep 27, 2026	5,001-10,000	2,270 contacts →
	Partial evidence “We are revenue AI-X-lerators.” Source: RevenueBase Database · checked Sep 27, 2026
4	Highlevel	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,767 contacts →
	Indirect evidence “Your tech stack is costing you more than money.” Source: RevenueBase Database · checked Sep 27, 2026
5	Localiq	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,534 contacts →
	Partial evidence “Grow your business with digital marketing powered by AI and local expertise.” Source: RevenueBase Database · checked Sep 27, 2026
6	6sense	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,443 contacts →
	Indirect evidence “6sense is on a mission to revolutionize the way B2B organizations create revenue by predicting customers most likely to buy and recommending the best course of action to engage…” Source: RevenueBase Database · checked Sep 27, 2026
7	Cience	Strong evidence	Miami, FL, United StatesHQ checked Sep 27, 2026	201-500	1,068 contacts →
	Strong evidence “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Source: RevenueBase Database · checked Sep 27, 2026
8	apollo.io	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	863 contacts →
	Partial evidence “Apollo.io is the AI-powered end-to-end go-to-market platform that empowers sales, marketing, and revenue teams to find prospects, engage customers, and close deals with…” Source: RevenueBase Database · checked Sep 27, 2026
9	Demandbase	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	861 contacts →
	Partial evidence “Demandbase is the only pipeline AI platform that empowers GTM teams to automate growth at scale.” Source: RevenueBase Database · checked Sep 27, 2026
10	Infuse	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 27, 2026	1,001-5,000	796 contacts →
	Indirect evidence “Demand Excellence Delivered We are INFUSE, a global B2B demand and revenue marketing performance company.” Source: RevenueBase Database · checked Sep 27, 2026
11	Vendasta	Partial evidence	Saskatoon, SK, CanadaHQ checked Sep 27, 2026	501-1,000	771 contacts →
	Partial evidence “Vendasta is the leading AI software company for customer acquisition and engagement, helping businesses get more customers.” Source: RevenueBase Database · checked Sep 27, 2026
12	Manlitics B2B Ites	Indirect evidence	New York, United StatesHQ checked Sep 27, 2026	501-1,000	750 contacts →
	Indirect evidence “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Source: RevenueBase Database · checked Sep 27, 2026
13	Salebuild	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 27, 2026	n/a	708 contacts →
	Partial evidence “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Source: RevenueBase Database · checked Sep 27, 2026
14	Flexisales INC	Strong evidence	Las Vegas, NV, United StatesHQ checked Sep 27, 2026	201-500	697 contacts →
	Strong evidence “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
15	On24	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	622 contacts →
	Partial evidence “ON24, a Cvent company, is on a mission to help businesses bring their go-to-market strategy into the AI era and drive cost-effective revenue growth.” Source: RevenueBase Database · checked Sep 27, 2026
16	Sugarai	Indirect evidence	Denver, CO, United StatesHQ checked Sep 27, 2026	501-1,000	576 contacts →
	Indirect evidence “SugarAI: the CRM that actually helps sellers sell.” Source: RevenueBase Database · checked Sep 27, 2026
17	Cognism	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	530 contacts →
	Indirect evidence “Cognism provides accurate, compliant-first B2B data and sales intelligence for teams growing across Europe and beyond.” Source: RevenueBase Database · checked Sep 27, 2026
18	Movingdneedle Pvt. LTD	Strong evidence	Sterling Heights, MI, United StatesHQ checked Sep 27, 2026	51-200	528 contacts →
	Strong evidence “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: RevenueBase Database · checked Sep 27, 2026
19	Callbox INC	Strong evidence	Encino, CA, United StatesHQ checked Sep 27, 2026	201-500	499 contacts →
	Strong evidence “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Source: RevenueBase Database · checked Sep 27, 2026
20	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 27, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
21	Qualifa	Strong evidence	Brighton, United KingdomHQ checked Sep 27, 2026	51-200	440 contacts →
	Strong evidence “We are an award winning multilingual lead generation and market research service provider for B2B publishing, marketing, events and tech companies.” Source: RevenueBase Database · checked Sep 27, 2026
22	Leadgenius	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 27, 2026	201-500	416 contacts →
	Indirect evidence “LeadGenius helps B2B companies find and reach their next best customers.” Source: RevenueBase Database · checked Sep 27, 2026
23	MVF	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	401 contacts →
	Indirect evidence “MVF powers growth for our clients by connecting them to potential customers.” Source: RevenueBase Database · checked Sep 27, 2026
24	The Lead Market	Partial evidence	Nagpur, IndiaHQ checked Sep 27, 2026	51-200	387 contacts →
	Partial evidence “TLM empowers businesses to generate revenue through their qualified leads.” Source: RevenueBase Database · checked Sep 27, 2026
25	Beyond Codes INC	Strong evidence	Simi Valley, CA, United StatesHQ checked Sep 27, 2026	201-500	380 contacts →
	Strong evidence “Beyond Codes is a global B2B lead generation and appointment-setting agency trusted by some of the world's leading technology companies to build enterprise sales pipeline.” Source: RevenueBase Database · checked Sep 27, 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 lead generation services. 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 lead generation services.
Partial evidence: Its own public description names part of AI lead generation services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name AI lead generation services. 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 17,035 AI lead generation services worldwide

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AI lead generation services worldwide at a glance

As of Sep 27, 2026

18.6%Verified-email coverage

6.9Average contacts per company

1-10Median size (employees)

2.9%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

12,088

11-50

3,899

51-200

798

201-500

154

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 lead generation services, 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.
Coverage: Every country. Country and city lists for AI lead generation services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “AI lead generation services”. 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 lead generation services), 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 lead generation services, and records with no verified work email.
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, 21,739 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 27, 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 lead generation services by location

66 lists · largest first

Every AI lead generation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 lead generation services, 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 lead generation services are there worldwide?

RevenueBase identified 17,035 AI lead generation services worldwide 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?

Zoominfo, headquartered in Vancouver, tops this list with the largest team on record.

Which country has the most AI lead generation services?

The United States leads with 4,302 companies, followed by India (1,418) and the United Kingdom (1,088). Every AI lead generation services list by country and city is linked on this page.

Which city has the most AI lead generation services?

London leads with 499 headquartered companies, followed by New York (253) and Pune (250).

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 21,739 verified decision-maker contacts tracked across these 17,035 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 27, 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.