Updated 8 Nov 2026

Best AI training data providers in 2026, ranked by revenue.

The largest AI training data providers by revenue on record are Mercor ($2B, run rate, Jun 2026), Surge AI ($1.2B, FY2024), micro1 ($1B, run rate, Oct 2026), Scale AI ($870M, FY2024) and Prolific ($500M, run rate, May 2026). They sell datasets, made to order or off the shelf, to the companies that train AI models.

115 companies on our register say on their own pages that they sell datasets. 53 have revenue, a valuation or funding on record and are ranked below, every figure linked to the filing or article it comes from. Also called AI dataset companies, training data vendors.

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115

AI training data providers on the list

18

with revenue on record

$7.8B

a year between them, on record

27

take data from companies

The largest AI training data providers by revenue

The 10 with the most revenue on record, each bar linked to the record it comes from.

  1. 1Mercor$2B
  2. 2Surge AI$1.2B
  3. 3micro1$1B
  4. 4Scale AI$870M
  5. 5Prolific$500M
  6. 6Snorkel AI$375M
  7. 7Innodata$350M
  8. 8Turing$300M
  9. 9TaskUs$250M
  10. 10Appen$249M
Revenue over twelve months as each company published it or was reported to earn it; the periods differ, and the table below gives each one.

The latest money moves

The newest rounds, valuations and revenue figures among these companies, each linked to its record.

Best for each kind of work

For each area, the highest-ranked company on this list that names it on its own pages: the largest by the money on record, and how many here do the same work.

  • Best for business workMercor, $2B (run rate, Jun 2026): the largest of the 31 here that work on business work.
  • Best for codingMercor, $2B (run rate, Jun 2026): the largest of the 27 here that work on coding.
  • Best for medicalMercor, $2B (run rate, Jun 2026): the largest of the 23 here that work on medical.
  • Best for financeMercor, $2B (run rate, Jun 2026): the largest of the 20 here that work on finance.
  • Best for legalMercor, $2B (run rate, Jun 2026): the largest of the 15 here that work on legal.
  • Best for images and videoSurge AI, $1.2B (FY2024): the largest of the 24 here that work on images and video.
  • Best for speech and audioSurge AI, $1.2B (FY2024): the largest of the 16 here that work on speech and audio.
  • Best for languagesSurge AI, $1.2B (FY2024): the largest of the 15 here that work on languages.
  • Best for scienceSurge AI, $1.2B (FY2024): the largest of the 11 here that work on science.
  • Best for roboticsScale AI, $870M (FY2024): the largest of the 23 here that work on robotics.
  • Best for computer useScale AI, $870M (FY2024): the largest of the 14 here that work on computer use.
  • Best for securityProximal, $200M (run rate, Sep 2026): the largest of the 7 here that work on security.
  • Best for mathToloka, $26.4M (FY2024): the largest of the 4 here that work on math.

The ranking: 53 AI training data providers

Each company is ranked on the first of these it has on record: its revenue over twelve months (a run rate or a year as published, or its last four quarters added up; an AI segment where the rest of its business is not AI data), then its newest valuation, then the money it disclosed raising. No company pays for a place.

How it is made
Best AI training data providers, ranked by revenue, valuation and funding on record
#CompanyRanked onMeasureValuationWorks onPays companies for data
1Mercor$2BRevenue, run rate, Jun 2026$10BCoding, Business work, Finance, LegalThrough our introductions
2Surge AI$1.2BRevenue, FY2024Coding, Business work, Finance, Legal
3micro1$1BRevenue, run rate, Oct 2026$4BCoding, Finance, Legal, MedicalThrough our introductions
4Scale AI$870MRevenue, FY2024$29BCoding, Computer use, Business work, RoboticsThrough our introductions
5Prolific$500MRevenue, run rate, May 2026Coding, Medical, Languages
6Snorkel AI$375MRevenue, run rate, Sep 2026$3.5BCoding, Computer use, Business work, Legal
7Innodata$350MRevenue, 12 months to Sep 2026Coding, Business work, Medical, Robotics
8Turing$300MRevenue, run rate, Mar 2025$2.2BCoding, Computer use, Business work, FinanceThrough our introductions
9TaskUs$250MRevenue, 12 months to Sep 2026 (AI Services)Business work, Medical, Robotics, Images and video
10Appen$249MRevenue, 12 months to Jun 2026Coding, Business work, Finance, LegalIts own programme
11Proximal$200MRevenue, run rate, Sep 2026$300MCoding, Security
12Invisible Technologies$134MRevenue, FY2024$2BCoding, Finance, Legal, Business work
13AfterQuery$100MRevenue, run rate, Apr 2026$3.2BCoding, Computer use, Business work, FinanceThrough our introductions
14Arena$100MRevenue, run rate, Oct 2026$3.1BBusiness work
15Mecka$100MRevenue, run rate, Jun 2026$500MRobotics, Business work
16Wirestock$40MRevenue, run rate, May 2026Creative, Images and videoIts own programme
17Toloka$26.4MRevenue, FY2024Coding, Computer use, Business work, Finance
18Eigent AI$12MRevenue, run rate, Oct 2026Computer use, Business work
19Mechanize$500MValuation, 2026Coding
20Vals AI$400MValuation, 2026Coding, Computer use, Finance, Legal
21Kled$100MValuation, 2025Images and video, MedicalIts own programme
22Lightwheel$145MMoney raised, disclosedRobotics
23Encord$90MMoney raised, disclosedImages and video, Robotics, Medical, Business work
24Patronus AI$70MMoney raised, disclosedCoding, Computer use, Business work, FinanceThrough our introductions
25XDOF$70MMoney raised, disclosedRobotics, Business work
26CloudFactory$65MMoney raised, disclosedBusiness work, Medical, Robotics, Images and video
27Defined.ai$62.3MMoney raised, disclosedBusiness work, Finance, Medical, RoboticsIts own programme
28Centific$60MMoney raised, disclosedBusiness work, Finance, Medical, LanguagesIts own programme
29David AI$50MMoney raised, disclosedSpeech and audio, Languages
30SuperAnnotate$49.5MMoney raised, disclosedCoding, Computer use, Business work, FinanceIts own programme
31Deeptune$43MMoney raised, disclosedCoding
32Bespoke Labs$40MMoney raised, disclosedCoding, Business work
33Gray Swan AI$40MMoney raised, disclosedCoding, Computer use, Business work, Security
34Luel$31.2MMoney raised, disclosedSpeech and audio, Computer use, Robotics, Images and video
35Deccan AI$25MMoney raised, disclosedCoding, Computer use, Business work, Finance
36iMerit$23.5MMoney raised, disclosedCoding, Business work, Finance, Medical
37SimpleClosure$19MMoney raised, disclosedCoding, Business workIts own programme
38Datacurve$15MMoney raised, disclosedCoding, Business work, SecurityIts own programme
39Midcentury$15MMoney raised, disclosedRobotics, Images and video
40Chakra Labs$10.1MMoney raised, disclosedLegal, Finance, Business work, Computer use
41BioStack Platforms$9.5MMoney raised, disclosedMedical, Science, Images and video
42Idler$9MMoney raised, disclosedCoding, Legal, Finance, SecurityIts own programme
43Perle AI$9MMoney raised, disclosedCoding, Robotics, Legal, Medical
44Human Archive$8.2MMoney raised, disclosedRobotics, Images and video, Speech and audio
45Runloop$7MMoney raised, disclosedCoding, Computer use, Business work
46clickworker$6MMoney raised, disclosedImages and video, Speech and audio
47VisionLab AI$6MMoney raised, disclosedRobotics, Images and video
48Build AI$5MMoney raised, disclosedRobotics
49Latch$5MMoney raised, disclosedScience, Medical, Security
50Troveo$4.5MMoney raised, disclosedImages and video, Speech and audio, Robotics, GamesIts own programme
51Good Start Labs$3.6MMoney raised, disclosed
52Gradient Health$2.8MMoney raised, disclosedMedicalSays it buys data
53Poindexter Labs$2.7MMoney raised, disclosedFinance, Legal
On the list with no money on record (62)

6thSense, Abaka AI, Abundant, Anthromind, Aptura, Asimov, Aviro, Besimple AI, Claru, Collinear, Contra Labs, Cortex AI, Cua, DARE Labs, DataOcean AI, Datoric, Dissei, EdotEnv, Emulated, Enact, Exabite, exponential, Fleet, Foundry AI, Hillclimb, Hitech BPO, Humyn Labs, Huzzle Labs, Incalmo, Karya, Keymakr, Labellerr, LXT, Magma, Markov, Metaphi, Olam Labs, Ooak, OpenTrain AI, Paper Instruments, Parsewave, Petrarch, Pixelstwo, Prime Intellect, ReasonCore, Refresh, Revelo, Rise Data Labs, Sepal AI, Shaip, Sieve, Symbal, Tacit Labs, TELUS Digital, TrainAI by RWS, Uber AI Solutions, Ulam, Unidata, Vetto AI, Vibrant Labs, Welocalize, Zeton.

Twelve months.
A run rate or ARR is the company's own annualised figure, often its best month times twelve; a year is the year it published. Where a company reports quarters or halves, the last four quarters or two halves are added up. Gross revenue of a human data company includes what it pays its experts.
Who is on it.
A company is on this list when its own pages say it does this work, read word for word. It is not on it because we chose it, and none pays to be here.
Your place, on your site.
Every ranked company has a badge of its place, kept current with this page: the address is /badges/ai-training-data-providers/ followed by the company's id in its page's address, as in Mercor's. Link it to this page.
Pays companies for data.
"Through our introductions": it takes companies' data through AIData.Broker's introductions and pays us a referral fee when one goes ahead. That never moves its place: the order is the money on record. "Its own programme": a published programme for buying data. "Says it buys data": its own words, linked.

Head to head

The comparisons people search between companies on this list, side by side on the same figures.

Every comparison

More answers

Which are the largest AI training data providers?
By the money on record: Mercor, $2B (run rate, Jun 2026); Surge AI, $1.2B (FY2024); micro1, $1B (run rate, Oct 2026). 18 of the 115 on the list have revenue on record; the others are ranked on their valuation or the money they raised.
Is Scale AI the biggest of the AI training data providers?
By valuation, yes: Scale AI was valued at $29B (Jun 2025). By revenue on record, Mercor is larger: $2B (run rate, Jun 2026), against $870M (FY2024) for Scale AI.
Which AI training data providers buy data from companies?
27 of them take data from companies that hold it, on a published programme or in their own words: Mercor, micro1, Scale AI, Turing, Appen, AfterQuery, Wirestock, Kled, Patronus AI and Defined.ai, and others in the table. A company holding such data can value it free and be introduced to every one whose rules take it.
How many AI training data providers are there?
115 companies on our register say on their own pages that they sell datasets. 53 of them have revenue, a valuation or funding on record, and are ranked; the rest are listed by name.
How is this list ranked?
Each company is ranked on the first of these it has on record: its revenue over twelve months (a run rate or a year as published, or its last four quarters added up; an AI segment where the rest of its business is not AI data), then its newest valuation, then the money it disclosed raising. No company pays for a place.

Buying data rather than selling it? We also publish AI Training Data Providers, which sets the same companies out for buyers: where each provider says its data comes from.

Other rankings

The same rule, other parts of the market, and every company on one page: the market map.

Every ranking

Cite this

AIData.Broker, “Best AI training data providers in 2026, ranked by revenue”, reviewed 8 Nov 2026. https://aidata.broker/best/ai-training-data-providers

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