Company lists · Data refreshed September 2026
Top 25 AI model training services worldwide
RevenueBase identified 4,530 company matches for AI model training services worldwide as of September 2026 and tracks 399,851 professional contacts across them, including 103,723 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for AI model training services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026. Country and city lists for AI model training services follow the table.
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.
The 25 largest AI model training services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 326,658 contacts → | ||||
Exact match “Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 6,538 contacts → | ||||
Exact match “iMerit is a leader in expert data solutions for training, tuning and evaluating AI models and computer vision systems.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 5,969 contacts → | ||||
Exact match “Altimetrik is an AI-native engineering company that builds systems to power the modern enterprise.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 4,941 contacts → | ||||
Exact match “Invisible Technologies makes AI work.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 3,009 contacts → | ||||
Exact match “What Does Sama Do Sama gets your AI project to production-and helps you stay there.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 1,943 contacts → | ||||
Exact match “We aim to help build high-quality AI models by providing high-quality data and model evaluations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 1,272 contacts → | ||||
Exact match “Objectways is an AI data solutions company trusted by Fortune 500 enterprises and high-growth AI teams worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 977 contacts → | ||||
Exact match “provides ML data operations support with Human-in-the-loop for LLMs and autonomous systems, focusing on AI/ML model training and annotation services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 899 contacts → | ||||
Exact match “With 30+ years of experience in data annotation, we support AI innovators to build smarter AI.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 799 contacts → | ||||
Exact match “DataMites™ team comprises world-class data scientists and business consultants who specialize in the application of advanced machine learning and artificial intelligence to…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 796 contacts → | ||||
Exact match “CapeStart is a global technology and services company that empowers organizations to compete and thrive in the digital economy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 770 contacts → | ||||
Exact match “Thoth AI is a global AI data solutions company with R&D operations in Silicon Valley, working with AI teams to support the design, development, and deployment of production-grade…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 751 contacts → | ||||
Exact match “Cogito Tech is a global managed service provider specializing in scalable data development tailored for AI model development.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 742 contacts → | ||||
Exact match “phData is the leading AI and data services company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 734 contacts → | ||||
Exact match “IndiaNIC is a leading AI development, premier machine learning solutions provider and Software Development Company, established in 1998 in Ahmedabad, India, with a continuously…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 732 contacts → | ||||
Exact match “Toloka is the global leader in human-powered data solutions for AI development.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 689 contacts → | ||||
Exact match “C1 is the global leader in Enterprise AI-Enablement, helping organizations transform their workforce for the AI era.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 683 contacts → | ||||
Exact match “We enable intelligent enterprises by translating business outcomes into decision-centric data products, powered by AI Factory Construct, accelerators, and Agentic Intelligence…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 654 contacts → | ||||
Exact match “Productive Playhouse is the execution partner technical program managers trust when scale, compliance, and quality can’t slip.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 567 contacts → | ||||
Exact match “Mindy Support delivers end-to-end AI data infrastructure - from data collection and annotation to LLM training and BPO - trusted by Fortune 500 and GAFAM companies.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 551 contacts → | ||||
Exact match “We leverage our AI data and localization experience – gained from working with the largest AI/NLP deployments in the world – to help train and fine-tune AI and LLM apps.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 524 contacts → | ||||
Exact match “With 27+ years of experience, Welo Data is the human-centered infrastructure for globally effective AI.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 516 contacts → | ||||
Exact match “Volga Partners is a global leader in generative AI (GenAI) innovation, building and deploying advanced AI solutions that power real-world business transformation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 484 contacts → | ||||
Exact match “Founded in 2009, OpenXcell is at the forefront of AI-driven innovation, offering cutting-edge software development services that propel businesses into the future.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 455 contacts → | ||||
Exact match “LXT is an emerging leader in AI training data to power intelligent technology for global organizations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “AI model training services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 4,530 AI model training services worldwide
See the full list, filter by size, metro and specialty, and access 103,723 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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AI model training services worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- 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.
- Coverage
- Every country. Country and city lists for AI model training services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “AI model training services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 103,723 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
AI model training services by location
21 lists · largest firstEvery AI model training services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- AI model training services based in the United States733
- AI model training services based in India471
- AI model training services based in France212
- AI model training services based in the United Kingdom187
- AI model training services based in Germany175
- AI model training services based in Canada116
- AI model training services based in the Netherlands114
- AI model training services based in Australia81
- AI model training services based in the United Arab Emirates61
- AI model training services based in Spain60
- AI model training services based in Brazil54
- AI model training services based in Switzerland54
- AI model training services based in Poland45
- AI model training services based in Japan34
- AI model training services based in Sweden32
Cities
- AI model training services based in London, United Kingdom82
- AI model training services based in Paris, France75
- AI model training services based in San Francisco, United States56
- AI model training services based in New York, United States45
- AI model training services based in Hyderabad, India40
- AI model training services based in Austin, United States36
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “AI model training services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many AI model training services are there worldwide?
RevenueBase identified 4,530 company matches for AI model training services worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Cognizant tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most AI model training services?
The United States leads with 733 companies, followed by India (471) and France (212). Every AI model training services list by country and city is linked on this page.
Which city has the most AI model training services?
London leads with 110 company records, followed by Paris (89) and San Francisco (56).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 103,723 professional contacts with verified work emails tracked across these 4,530 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 4,530 AI model training services worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 AI model training services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 4,530 matching company records for AI model training services worldwide, with 399,851 tracked contacts and 103,723 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 AI model training services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Cognizantcognizant.aiHQ: Teaneck, NJ, United StatesReported employees: 10001+ | Teaneck, NJ, United States | 10001+ | Exact match | 326,658 contacts → |
“Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Imerit Technologyimerit.aiHQ: San Jose, CA, United StatesReported employees: 10001+ | San Jose, CA, United States | 10001+ | Exact match | 6,538 contacts → |
“iMerit is a leader in expert data solutions for training, tuning and evaluating AI models and computer vision systems.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Altimetrikaltimetrik.comHQ: Southfield, MI, United StatesReported employees: 5,001-10,000 | Southfield, MI, United States | 5,001-10,000 | Exact match | 5,969 contacts → |
“Altimetrik is an AI-native engineering company that builds systems to power the modern enterprise.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Invisible Technologiesinvisibletech.aiHQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 4,941 contacts → |
“Invisible Technologies makes AI work.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  SAMAsama.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,009 contacts → |
“What Does Sama Do Sama gets your AI project to production-and helps you stay there.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Softage Information Technology Limitedsoftage.aiHQ: Gurgaon, IndiaReported employees: 1,001-5,000 | Gurgaon, India | 1,001-5,000 | Exact match | 1,943 contacts → |
“We aim to help build high-quality AI models by providing high-quality data and model evaluations.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Objectwaysobjectways.comHQ: Scottsdale, AZ, United StatesReported employees: 1,001-5,000 | Scottsdale, AZ, United States | 1,001-5,000 | Exact match | 1,272 contacts → |
“Objectways is an AI data solutions company trusted by Fortune 500 enterprises and high-growth AI teams worldwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Digital Divide Data DDDdigitaldividedata.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 977 contacts → |
“provides ML data operations support with Human-in-the-loop for LLMs and autonomous systems, focusing on AI/ML model training and annotation services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sigma AIsigma.aiHQ: Miami, FL, United StatesReported employees: 501-1,000 | Miami, FL, United States | 501-1,000 | Exact match | 899 contacts → |
“With 30+ years of experience in data annotation, we support AI innovators to build smarter AI.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Datamitesdatamites.comHQ: Bangalore, IndiaReported employees: Not recorded | Bangalore, India | Not recorded | Exact match | 799 contacts → |
“DataMites™ team comprises world-class data scientists and business consultants who specialize in the application of advanced machine learning and artificial intelligence to…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Capestartcapestart.comHQ: Cambridge, MA, United StatesReported employees: 501-1,000 | Cambridge, MA, United States | 501-1,000 | Exact match | 796 contacts → |
“CapeStart is a global technology and services company that empowers organizations to compete and thrive in the digital economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Thoth AIaithoth.comHQ: Singapore, CA, United StatesReported employees: 201-500 | Singapore, CA, United States | 201-500 | Exact match | 770 contacts → |
“Thoth AI is a global AI data solutions company with R&D operations in Silicon Valley, working with AI teams to support the design, development, and deployment of production-grade…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Cogito Techcogitotech.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 751 contacts → |
“Cogito Tech is a global managed service provider specializing in scalable data development tailored for AI model development.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Phdataphdata.ioHQ: Minneapolis, MN, United StatesReported employees: 501-1,000 | Minneapolis, MN, United States | 501-1,000 | Exact match | 742 contacts → |
“phData is the leading AI and data services company.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Indianic Infotech Limitedindianic.comHQ: Ahmedabad, IndiaReported employees: 501-1,000 | Ahmedabad, India | 501-1,000 | Exact match | 734 contacts → |
“IndiaNIC is a leading AI development, premier machine learning solutions provider and Software Development Company, established in 1998 in Ahmedabad, India, with a continuously…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Tolokatoloka.ai HQ: Amsterdam, NetherlandsReported employees: Not recorded | Amsterdam, Netherlands | Not recorded | Exact match | 732 contacts → |
“Toloka is the global leader in human-powered data solutions for AI development.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Correlation ONEcorrelation-one.comHQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 689 contacts → |
“C1 is the global leader in Enterprise AI-Enablement, helping organizations transform their workforce for the AI era.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Anblicksanblicks.comHQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 683 contacts → |
“We enable intelligent enterprises by translating business outcomes into decision-centric data products, powered by AI Factory Construct, accelerators, and Agentic Intelligence…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Productive Playhouseproductiveplayhouse.comHQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 654 contacts → |
“Productive Playhouse is the execution partner technical program managers trust when scale, compliance, and quality can’t slip.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Mindy Supportmindy-support.comHQ: CyprusReported employees: 1,001-5,000 | Cyprus | 1,001-5,000 | Exact match | 567 contacts → |
“Mindy Support delivers end-to-end AI data infrastructure - from data collection and annotation to LLM training and BPO - trusted by Fortune 500 and GAFAM companies.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  E2f, INCe2f.comHQ: Los Altos, CA, United StatesReported employees: 51-200 | Los Altos, CA, United States | 51-200 | Exact match | 551 contacts → |
“We leverage our AI data and localization experience – gained from working with the largest AI/NLP deployments in the world – to help train and fine-tune AI and LLM apps.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Welo Datat.mtrbio.comHQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 524 contacts → |
“With 27+ years of experience, Welo Data is the human-centered infrastructure for globally effective AI.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Volga Partnersvolgapartners.comHQ: Kirkland, WA, United StatesReported employees: 1,001-5,000 | Kirkland, WA, United States | 1,001-5,000 | Exact match | 516 contacts → |
“Volga Partners is a global leader in generative AI (GenAI) innovation, building and deploying advanced AI solutions that power real-world business transformation.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Openxcell Next-Gen AI Servicesopenxcell.comHQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 484 contacts → |
“Founded in 2009, OpenXcell is at the forefront of AI-driven innovation, offering cutting-edge software development services that propel businesses into the future.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  LXTlxt.aiHQ: Mississauga, ON, CanadaReported employees: 501-1,000 | Mississauga, ON, Canada | 501-1,000 | Exact match | 455 contacts → |
“LXT is an emerging leader in AI training data to power intelligent technology for global organizations.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,530 company matches
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AI model training services: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,524 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 4,530 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
AI model training services by location
21 lists · largest firstEvery AI model training services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- AI model training services based in the United States733
- AI model training services based in India471
- AI model training services based in France212
- AI model training services based in the United Kingdom187
- AI model training services based in Germany175
- AI model training services based in Canada116
- AI model training services based in the Netherlands114
- AI model training services based in Australia81
- AI model training services based in the United Arab Emirates61
- AI model training services based in Spain60
- AI model training services based in Brazil54
- AI model training services based in Switzerland54
- AI model training services based in Poland45
- AI model training services based in Japan34
- AI model training services based in Sweden32
Cities
- AI model training services based in London, United Kingdom82
- AI model training services based in Paris, France75
- AI model training services based in San Francisco, United States56
- AI model training services based in New York, United States45
- AI model training services based in Hyderabad, India40
- AI model training services based in Austin, United States36
Questions about this company list
What does Exact match mean for AI model training services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many AI model training services did RevenueBase find worldwide?
The saved snapshot records 4,530 matching company records, 399,851 tracked contacts and 103,723 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 AI model training services worldwide. Snapshot: September 19, 2026. https://revenuebase.ai/companies/browse/ai-model-training-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 AI model training services worldwide
RevenueBase records 4,530 matching company records for AI model training services worldwide, with 399,851 tracked contacts and 103,723 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 AI model training services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Cognizantcognizant.ai HQ: Teaneck, NJ, United StatesReported employees: 10001+ | Teaneck, NJ, United States | 10001+ | Exact match | 326,658 contacts → |
“Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Imerit Technologyimerit.ai HQ: San Jose, CA, United StatesReported employees: 10001+ | San Jose, CA, United States | 10001+ | Exact match | 6,538 contacts → |
“iMerit is a leader in expert data solutions for training, tuning and evaluating AI models and computer vision systems.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Altimetrikaltimetrik.com HQ: Southfield, MI, United StatesReported employees: 5,001-10,000 | Southfield, MI, United States | 5,001-10,000 | Exact match | 5,969 contacts → |
“Altimetrik is an AI-native engineering company that builds systems to power the modern enterprise.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Invisible Technologiesinvisibletech.ai HQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 4,941 contacts → |
“Invisible Technologies makes AI work.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | SAMAsama.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,009 contacts → |
“What Does Sama Do Sama gets your AI project to production-and helps you stay there.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Softage Information Technology Limitedsoftage.ai HQ: Gurgaon, IndiaReported employees: 1,001-5,000 | Gurgaon, India | 1,001-5,000 | Exact match | 1,943 contacts → |
“We aim to help build high-quality AI models by providing high-quality data and model evaluations.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Objectwaysobjectways.com HQ: Scottsdale, AZ, United StatesReported employees: 1,001-5,000 | Scottsdale, AZ, United States | 1,001-5,000 | Exact match | 1,272 contacts → |
“Objectways is an AI data solutions company trusted by Fortune 500 enterprises and high-growth AI teams worldwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Digital Divide Data DDDdigitaldividedata.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 977 contacts → |
“provides ML data operations support with Human-in-the-loop for LLMs and autonomous systems, focusing on AI/ML model training and annotation services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sigma AIsigma.ai HQ: Miami, FL, United StatesReported employees: 501-1,000 | Miami, FL, United States | 501-1,000 | Exact match | 899 contacts → |
“With 30+ years of experience in data annotation, we support AI innovators to build smarter AI.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Datamitesdatamites.com HQ: Bangalore, IndiaReported employees: Not recorded | Bangalore, India | Not recorded | Exact match | 799 contacts → |
“DataMites™ team comprises world-class data scientists and business consultants who specialize in the application of advanced machine learning and artificial intelligence to…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Capestartcapestart.com HQ: Cambridge, MA, United StatesReported employees: 501-1,000 | Cambridge, MA, United States | 501-1,000 | Exact match | 796 contacts → |
“CapeStart is a global technology and services company that empowers organizations to compete and thrive in the digital economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Thoth AIaithoth.com HQ: Singapore, CA, United StatesReported employees: 201-500 | Singapore, CA, United States | 201-500 | Exact match | 770 contacts → |
“Thoth AI is a global AI data solutions company with R&D operations in Silicon Valley, working with AI teams to support the design, development, and deployment of production-grade…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Cogito Techcogitotech.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 751 contacts → |
“Cogito Tech is a global managed service provider specializing in scalable data development tailored for AI model development.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Phdataphdata.io HQ: Minneapolis, MN, United StatesReported employees: 501-1,000 | Minneapolis, MN, United States | 501-1,000 | Exact match | 742 contacts → |
“phData is the leading AI and data services company.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Indianic Infotech Limitedindianic.com HQ: Ahmedabad, IndiaReported employees: 501-1,000 | Ahmedabad, India | 501-1,000 | Exact match | 734 contacts → |
“IndiaNIC is a leading AI development, premier machine learning solutions provider and Software Development Company, established in 1998 in Ahmedabad, India, with a continuously…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Tolokatoloka.ai HQ: Amsterdam, NetherlandsReported employees: Not recorded | Amsterdam, Netherlands | Not recorded | Exact match | 732 contacts → |
“Toloka is the global leader in human-powered data solutions for AI development.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Correlation ONEcorrelation-one.com HQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 689 contacts → |
“C1 is the global leader in Enterprise AI-Enablement, helping organizations transform their workforce for the AI era.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Anblicksanblicks.com HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 683 contacts → |
“We enable intelligent enterprises by translating business outcomes into decision-centric data products, powered by AI Factory Construct, accelerators, and Agentic Intelligence…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Productive Playhouseproductiveplayhouse.com HQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 654 contacts → |
“Productive Playhouse is the execution partner technical program managers trust when scale, compliance, and quality can’t slip.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Mindy Supportmindy-support.com HQ: CyprusReported employees: 1,001-5,000 | Cyprus | 1,001-5,000 | Exact match | 567 contacts → |
“Mindy Support delivers end-to-end AI data infrastructure - from data collection and annotation to LLM training and BPO - trusted by Fortune 500 and GAFAM companies.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | E2f, INCe2f.com HQ: Los Altos, CA, United StatesReported employees: 51-200 | Los Altos, CA, United States | 51-200 | Exact match | 551 contacts → |
“We leverage our AI data and localization experience – gained from working with the largest AI/NLP deployments in the world – to help train and fine-tune AI and LLM apps.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Welo Datat.mtrbio.com HQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 524 contacts → |
“With 27+ years of experience, Welo Data is the human-centered infrastructure for globally effective AI.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Volga Partnersvolgapartners.com HQ: Kirkland, WA, United StatesReported employees: 1,001-5,000 | Kirkland, WA, United States | 1,001-5,000 | Exact match | 516 contacts → |
“Volga Partners is a global leader in generative AI (GenAI) innovation, building and deploying advanced AI solutions that power real-world business transformation.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Openxcell Next-Gen AI Servicesopenxcell.com HQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 484 contacts → |
“Founded in 2009, OpenXcell is at the forefront of AI-driven innovation, offering cutting-edge software development services that propel businesses into the future.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | LXTlxt.ai HQ: Mississauga, ON, CanadaReported employees: 501-1,000 | Mississauga, ON, Canada | 501-1,000 | Exact match | 455 contacts → |
“LXT is an emerging leader in AI training data to power intelligent technology for global organizations.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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AI model training services: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,524 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 4,530 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
AI model training services by location
21 lists · largest firstEvery AI model training services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- AI model training services based in the United States733
- AI model training services based in India471
- AI model training services based in France212
- AI model training services based in the United Kingdom187
- AI model training services based in Germany175
- AI model training services based in Canada116
- AI model training services based in the Netherlands114
- AI model training services based in Australia81
- AI model training services based in the United Arab Emirates61
- AI model training services based in Spain60
- AI model training services based in Brazil54
- AI model training services based in Switzerland54
- AI model training services based in Poland45
- AI model training services based in Japan34
- AI model training services based in Sweden32
Cities
- AI model training services based in London, United Kingdom82
- AI model training services based in Paris, France75
- AI model training services based in San Francisco, United States56
- AI model training services based in New York, United States45
- AI model training services based in Hyderabad, India40
- AI model training services based in Austin, United States36
Questions about this company list
What does Exact match mean for AI model training services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many AI model training services did RevenueBase find worldwide?
The saved snapshot records 4,530 matching company records, 399,851 tracked contacts and 103,723 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Cite this list
RevenueBase Data Team. Top 25 AI model training services worldwide. Snapshot: September 19, 2026. https://revenuebase.ai/companies/browse/ai-model-training-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗