Company lists · Data refreshed September 2026

Top 25 Machine learning data preparation companies worldwide

Name: Machine learning data preparation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 722 companies tracked

RevenueBase identified 722 machine learning data preparation companies worldwide as of September 2026 and tracks 27,152 professional contacts across them, including 4,118 with verified work emails and 1,715 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers machine learning data preparation companies 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 5, 2026. Country and city lists for machine learning data preparation companies 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 5, 2026 86% judged on-target in blind review

722Companies

27,152Contacts tracked

4,118Verified emails

1,715Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest machine learning data preparation companies worldwide

Ranked by team size

Top 25 of 722 machine learning data preparation companies worldwide, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to machine learning data preparation 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	Imerit Technology	Partial evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	10001+	6,538 contacts →
	Partial evidence “iMerit is a leader in expert data solutions for training, tuning and evaluating AI models and computer vision systems.” Source: RevenueBase Database · checked Sep 5, 2026
2	Invisible Technologies	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	4,941 contacts →
	Indirect evidence “Invisible Technologies makes AI work.” Source: RevenueBase Database · checked Sep 5, 2026
3	Molecular Connections	Partial evidence	Bangalore, IndiaHQ checked Sep 5, 2026	1,001-5,000	1,523 contacts →
	Partial evidence “With over two decades of experience in Big Data and Data Science Solutions, Molecular Connections (MC) has been using AI-powered proprietary models to help customers achieve…” Source: RevenueBase Database · checked Sep 5, 2026
4	Objectways	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,272 contacts →
	Partial evidence “Objectways is an AI data solutions company trusted by Fortune 500 enterprises and high-growth AI teams worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
5	DOMO	Partial evidence	American Fork, UT, United StatesHQ checked Sep 5, 2026	501-1,000	1,244 contacts →
	Partial evidence “Strengthen your entire data journey with Domo’s AI and data products.” Source: RevenueBase Database · checked Sep 5, 2026
6	Digital Divide Data DDD	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	977 contacts →
	Partial evidence “provides ML data operations support with Human-in-the-loop for LLMs and autonomous systems, focusing on AI/ML model training and annotation services.” Source: RevenueBase Database · checked Sep 5, 2026
7	Cogito Tech	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	751 contacts →
	Partial evidence “Cogito Tech is a global managed service provider specializing in scalable data development tailored for AI model development.” Source: RevenueBase Database · checked Sep 5, 2026
8	LXT	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	501-1,000	455 contacts →
	Partial evidence “LXT is an emerging leader in AI training data to power intelligent technology for global organizations.” Source: RevenueBase Database · checked Sep 5, 2026
9	Qualitas Global	Partial evidence	Pune, IndiaHQ checked Sep 5, 2026	201-500	437 contacts →
	Partial evidence “Dedicated to revolutionizing the way outsourcing industries operate, Qualitas Global Services has emerged as a trusted business partner & key player in the data services industry.” Source: RevenueBase Database · checked Sep 5, 2026
10	Ganit INC	Partial evidence	Parsippany, NJ, United StatesHQ checked Sep 5, 2026	201-500	287 contacts →
	Partial evidence “Ganit is a full stack data company founded in 2017 with a mission to decipher the transformative power of artificial intelligence for businesses.” Source: RevenueBase Database · checked Sep 5, 2026
11	Abaka AI	Partial evidence	Palo Alto, United StatesHQ checked Sep 5, 2026	51-200	231 contacts →
	Partial evidence “Abaka AI delivers human intelligence data for frontier AI, helping power advanced systems through a trustworthy data platform.” Source: RevenueBase Database · checked Sep 5, 2026
12	Pinaca Technologies	Strong evidence	Chennai, IndiaHQ checked Sep 5, 2026	51-200	207 contacts →
	Strong evidence “We provide accurate and reliable machine learning products and solutions (on-premises) for the Government and Private sector players.” Source: RevenueBase Database · checked Sep 5, 2026
13	defined.ai	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	205 contacts →
	Partial evidence “Defined.ai is the leading provider of ethical AI data, offering the world’s biggest ethical AI data marketplace alongside subscriptions for flexible data access and custom…” Source: RevenueBase Database · checked Sep 5, 2026
14	Elder Research	Strong evidence	Charlottesville, VA, United StatesHQ checked Sep 5, 2026	51-200	161 contacts →
	Strong evidence “With three decades at the forefront of applied AI and machine learning, Elder Research, a MANTECH company, gives large organizations and government agencies a surefire way to…” Source: RevenueBase Database · checked Sep 5, 2026
15	Label Your Data	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 5, 2026	201-500	148 contacts →
	Partial evidence “Label Your Data is a data annotation & labeling company.” Source: RevenueBase Database · checked Sep 5, 2026
16	WOW AI	Indirect evidence	Newark, DE, United StatesHQ checked Sep 5, 2026	201-500	144 contacts →
	Indirect evidence “Wow AI \| Powered by AIxBlock - is an.” Source: RevenueBase Database · checked Sep 5, 2026
17	bdb.ai	Strong evidence	Bengaluru, IndiaHQ checked Sep 5, 2026	51-200	133 contacts →
	Strong evidence “BDB.ai is a Gartner 30 ranked Unified Data Analytics and Machine Learning platform, developed by the former R&D team of BusinessObjects, Paris.” Source: RevenueBase Database · checked Sep 5, 2026
18	Algoanalytics	Indirect evidence	Pune, IndiaHQ checked Sep 5, 2026	51-200	130 contacts →
	Indirect evidence “AlgoAnalytics, combines advanced AI with in-depth industry knowledge to drive innovation.” Source: RevenueBase Database · checked Sep 5, 2026
19	Appen Butler Hill, INC	Indirect evidence	Kirkland, WA, United StatesHQ checked Sep 5, 2026	51-200	127 contacts →
	Indirect evidence “APPEN BUTLER HILL, INC is an information technology and services company based out of 12131 113TH AVE NE, Kirkland, Washington, United States.” Source: RevenueBase Database · checked Sep 5, 2026
20	Liberty Source PBC	Strong evidence	Hampton, VA, United StatesHQ checked Sep 5, 2026	51-200	116 contacts →
	Strong evidence “Liberty Source PBC is a U.S-based provider of human-in-the-loop data services that help companies realize maximum value from their Artificial Intelligence, Machine Learning, and…” Source: RevenueBase Database · checked Sep 5, 2026
21	Light IT Global	Partial evidence	Kensington, United KingdomHQ checked Sep 5, 2026	51-200	113 contacts →
	Partial evidence “Light IT Global is a Data Science company that provides custom web and mobile software development services that include, IT consulting, design, market research, quality…” Source: RevenueBase Database · checked Sep 5, 2026
22	Aretove Technologies	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	112 contacts →
	Partial evidence “Aretove Technologies is a data focused company, headquartered in NYC, providing Software Services in Data Engineering, Enterprise Application Integration and Agentic AI.” Source: RevenueBase Database · checked Sep 5, 2026
23	Tika Data	Indirect evidence	Bengaluru, IndiaHQ checked Sep 5, 2026	51-200	107 contacts →
	Indirect evidence “Fueling the AI age.” Source: RevenueBase Database · checked Sep 5, 2026
24	Dataeq	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	104 contacts →
	Partial evidence “DataEQ uses a Crowd of humans to label millions of unstructured data points.” Source: RevenueBase Database · checked Sep 5, 2026
25	Opentrain AI	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	n/a	104 contacts →
	Partial evidence “The AI Data Labeling Marketplace: Find, hire, and securely pay vetted AI Trainers/data labelers across 110+ countries & any domain expertise.” Source: RevenueBase Database · checked Sep 5, 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: machine learning data preparation 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 machine learning data preparation companies.
Partial evidence: Its own public description names part of machine learning data preparation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name machine learning data preparation 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 722 machine learning data preparation companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,118 reachable decision-makers.

Free signup · no credit card

View the full list →

Machine learning data preparation companies worldwide at a glance

As of Sep 5, 2026

15.2%Verified-email coverage

6.3%Mobile-number coverage

37.6Average contacts per company

1-10Median size (employees)

4.6%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

362

11-50

231

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 machine learning data preparation 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.
Coverage: 8 countries, largest first: the United States, India, the United Kingdom, Brazil, France, Germany, Canada, Australia. Country and city lists for machine learning data preparation companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “machine learning data preparation 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 machine learning data preparation 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 machine learning data preparation companies, 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, 4,118 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 between September 5, 2026 and 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.

Machine learning data preparation companies by location

9 lists · largest first

Every Machine learning data preparation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Machine learning data preparation companies based in London, United Kingdom34

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 machine learning data preparation 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 machine learning data preparation companies are there worldwide?

RevenueBase identified 722 machine learning data preparation companies 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?

Imerit Technology, headquartered in San Jose, tops this list with the largest team on record.

Which country has the most machine learning data preparation companies?

The United States leads with 294 companies, followed by India (209) and the United Kingdom (56). Every machine learning data preparation companies list by country and city is linked on this page.

Which city has the most machine learning data preparation companies?

London leads with 33 headquartered companies, followed by New York (23) and San Francisco (18).

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 4,118 verified decision-maker contacts tracked across these 722 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 5, 2026 and September 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 722 machine learning data preparation companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.