How many AI training platforms are there?

The list has 58 platforms. 31 post their roles publicly, with 3,228 open roles on MantaWork today. The other 27 take one application, run a task app or post gigs on a marketplace, so each gets one card.

Which platforms are on the list?

A platform is on the list when a named company pays the worker, joining is free, the application runs on the company's own site or job board, and the work trains, tests or supplies data for AI. Closed platforms are not listed.

How is the list ordered?

The list runs A to Z. Some platforms are marked Paid partnership, and that label does not change a platform's place. No platform pays to be listed.

AI training and data annotation platforms, A to Z

58 platforms · 3,228 open roles · checked 16 November 2026

Platforms that pay people to train, test or label data for AI, in one list. 31 post their roles: see the 3,228 open today with the pay each listing shows. The other 27 take one application or run a task app, so you get what the work is and how to get in.

AfterQuery
Expert network
Expert tasks that build training data for frontier AI labs.
How you get in
Apply on its site.
Where
Worldwide
Go to AfterQuery
Alignerr
Owned by Labelbox. 450+ active roles across STEM, coding, audio, language, and general categories. Public role listings; you apply per role.
Open roles today
24
Pay in listings
$15 to $100/hr
How it pays
by PayPal or Payoneer
Go to Alignerr Read our review
Amazon Mechanical Turk
Task app
Run by Amazon
Short online tasks, including AI data labelling.
How you get in
Sign up as a worker, then pick tasks.
Where
Worldwide, US
Go to Amazon Mechanical Turk
Anyone AI
Hires experts in math, science, finance and software to train AI. Most roles list an hourly rate and a country.
Open roles today
212
Pay in listings
$15 to $150/hr
Go to Anyone AI
Awign
Video capture for robots
Run by Mynavi
Head-camera video of home and work tasks for robot training, plus annotation.
How you get in
Sign up for gig work on its site.
Where
India
Go to Awign
Babel Audio
Paid partnership
Collects voice data for AI models: transcription, voice acting and recorded conversations, in many languages. Freelance and fully online. Pay is per hour of finished audio, not per hour you work. Each listing names its language and who can apply.
Open roles today
53
Pay in listings
No pay listed
How it pays
weekly
Go to Babel Audio Read our review
Braintrust
A talent marketplace that re-lists contract roles from other companies. Only AI training and data roles are shown here. Each listing names the employer.
Open roles today
41
Pay in listings
$10 to $150/hr
Go to Braintrust
ByteDance Xpert
Expert network
Run by ByteDance
Chinese-speaking experts review and write AI training data. Tasks arrive by skill tag.
How you get in
Sign up by phone, then pass a one-hour entrance exam.
Where
China
Go to ByteDance Xpert
Chemin
Posts AI data projects such as recording, transcription, translation review and annotation. Most are remote, but each is tied to one country or language, often Malaysia, Hong Kong, Singapore or India.
Open roles today
20
Pay in listings
No pay listed
Go to Chemin
Claru
Get paid per hour in USD to film everyday tasks: chores, cooking, gardening, and work in shops, offices and warehouses. Use a phone or a head mount. Each project lists its countries. Claru also has game data and annotation projects.
Open roles today
48
Pay in listings
$5 to $50/hr
Go to Claru
Clickworker
Task app
Run by LXT
Short online tasks: text, photo and audio data for AI.
How you get in
Sign up on the site or app.
Where
Worldwide, Europe
Go to Clickworker
CloudFactory
An AI data company. It hires part-time workers to record video and site data for AI, often in person at construction sites in one city. It also hires bilingual computational linguists. Check the place and hours on each posting.
Open roles today
17
Pay in listings
No pay listed
Go to CloudFactory
CrowdGen by Appen
Data collection, transcription and evaluation projects. Check each project for its language, location and payment terms.
Open roles today
16
Pay in listings
No pay listed
How it pays
by bank, PayPal or Payoneer
Go to CrowdGen by Appen Read our review
CrowdWorks (Japan)
Freelance marketplace
Japanese annotation and AI evaluation gigs posted by clients.
How you get in
Create a freelancer profile, then apply to each gig.
Where
Japan
Go to CrowdWorks (Japan)
Crowdworks (Korea)
Task app
Korean data tasks in its app, plus project roles for speakers of Vietnamese, Malay, Thai and Khmer living in Korea.
How you get in
Do tasks in the app. Project roles are posted one at a time.
Where
Korea
Go to Crowdworks (Korea)
DataAnnotation
Expert network
Writing, coding and reasoning tasks that train chatbots.
How you get in
One application with an assessment. It posts no separate roles.
Where
Worldwide
Go to DataAnnotation
DataForce by TransPerfect
Data collection and annotation projects, including participant tasks and freelance projects. Check the work location and engagement terms in each listing.
Open roles today
166
Pay in listings
No pay listed
How it pays
by wire, PayPal and more
Go to DataForce by TransPerfect Read our review
DataVale AI
Video capture for robots
First-person video of household and industrial tasks for robot training.
How you get in
Apply on its site.
Where
India
Go to DataVale AI
Deccan AI Experts
Expert network
Run by Deccan AI, formerly Soul AI
Ranking AI answers, checking agent steps and writing prompts, in 40+ languages.
How you get in
Request an invite on its site.
Where
India, Worldwide
Go to Deccan AI Experts
Flitto Arcade
Task app
Run by Flitto
Language data tasks in 90+ languages, with rewards based on checked quality.
How you get in
Sign up in Flitto Arcade.
Where
Korea, Worldwide
Go to Flitto Arcade
Gray Swan Arena
Red-teaming contests
Contests to break AI agents safely, for prize money.
How you get in
Join a contest on its arena page.
Where
Worldwide
Go to Gray Swan Arena
Handshake AI
Expert network
Run by Handshake
Paid, remote AI training work for experts and generalists, from associate degrees to PhDs.
How you get in
Apply in the Handshake app.
Where
US
Go to Handshake AI
Hashlist
Expert network
AI tasks for embedded, hardware and controls engineers, paid per accepted task.
How you get in
Apply on its site.
Where
Worldwide
Go to Hashlist
Human Science
Data vendor
Doctors and dentists label medical AI data; translators work in Japanese, English, Korean and Chinese.
How you get in
Apply by email to each posting on its partner page.
Where
Japan
Go to Human Science
iMerit Scholars
iMerit's platform for paid AI tasks. Roles include language specialists, audio and video review, and expert summaries. Each role lists the countries it is open to. The site states pay from $40 an hour overall, but it gives no rate per role.
Open roles today
44
Pay in listings
No pay listed
Go to iMerit Scholars
Innodata
A data engineering company listed on NASDAQ. It hires part-time AI associates, annotators and evaluators, mostly with flexible hours. Many roles are open in one US state or one country.
Open roles today
29
Pay in listings
No pay listed
Go to Innodata
Karya
Task app
Speech, text and evaluation tasks in 115+ languages, including Indian languages.
How you get in
Join through its app and partner programmes.
Where
India
Go to Karya
Kastle
A Y Combinator company that builds AI voice agents for US mortgage lenders. Hires part-time AI trainers. You need mortgage call-center experience.
Open roles today
1
Pay in listings
No pay listed
Go to Kastle
Label Your Data
A data annotation company. Its current roles are based in Ukraine.
Open roles today
1
Pay in listings
No pay listed
Go to Label Your Data
Lancers
Freelance marketplace
Japanese annotation and comparison gigs posted by clients.
How you get in
Create a freelancer profile, then apply to each gig.
Where
Japan
Go to Lancers
Lilt
A language AI company. Its LiltLancer community hires AI training contributors, voice talent and subject matter experts. They build and score AI test tasks in their own language.
Open roles today
378
Pay in listings
No pay listed
Go to Lilt
LXT
An AI data company. It hires freelancers for speech recording, audio data collection and language review. Each project names its languages and countries.
Open roles today
15
Pay in listings
No pay listed
Go to LXT
Mercor
Paid partnership
AI-interview-based talent network. One application, voice interview with their AI, then matched to projects across coding, research, and specialist work. Pay scales with track and seniority.
Open roles today
328
Pay in listings
$4.56 to $500/hr
How it pays
by Stripe or Wise
Go to Mercor Read our review
Meridial
The marketplace run by Invisible Technologies for AI training projects. The same project is posted once per country, so look for the listing in your country.
Open roles today
544
Pay in listings
$6 to $150/hr
Go to Meridial
micro1
Paid partnership
Recruits experts and generalists for AI training projects and lists each role with an hourly range on its own job board. You apply per role, then do a role-specific interview with micro1's AI recruiter.
Open roles today
349
Pay in listings
$9 to $400/hr
How it pays
twice a month
Go to micro1 Read our review
Mindrift
Remote AI training platform with category-organized tracks (code, STEM, design, writing, legal, consulting). Published pay band $15-$100/hr. Lower friction than Mercor or Alignerr; project supply has been growing through 2026.
Open roles today
22
Pay in listings
No pay listed
How it pays
twice a month
Go to Mindrift Read our review
Neevo
Task app
Run by Defined.ai
Text, audio, image and video tasks in 500+ languages, paid by PayPal.
How you get in
Sign up on its site.
Where
Worldwide
Go to Neevo
OneForma (Centific)
OneForma is the contributor marketplace for Centific (formerly Pactera EDGE). Hires for domain-specific projects: cultural annotation, healthcare data, video data collection, photo ML evaluation. Mostly task-based pay rather than hourly.
Open roles today
16
Pay in listings
$5 to $150/hr
How it pays
by Payoneer, Tipalti or PayPal
Go to OneForma (Centific)Read our review
OpenTrain
A marketplace where AI teams post paid data work. Data collection jobs include at-home video recording, first-person chore footage and 360-camera vlogging. Most pay per hour of approved video. Each job lists its pay and countries.
Open roles today
41
Pay in listings
$6 to $150/hr
Go to OpenTrain
Outlier
Operated by Scale AI. The largest AI training marketplace by contributor count. Multiple project tracks (coding, language, math, science). Pay varies widely by track and project.
Open roles today
10
Pay in listings
$18 to $80/hr
How it pays
weekly
Go to Outlier Read our review
Perle
Voice and audio
Transcription and audio work by language, including African languages.
How you get in
Apply on its site.
Where
Worldwide, Africa
Go to Perle
Productive Playhouse
A language data company. It hires AI product evaluators, transcribers and data collectors in many languages. Most roles are remote and temporary.
Open roles today
49
Pay in listings
No pay listed
Go to Productive Playhouse
Prolific
Paid research studies
Paid research studies and AI tasks.
How you get in
Sign up, and studies appear in your account.
Where
Worldwide, Europe, US
Go to Prolific
Remo Experts
Lists AI data projects: speech recording, audio review, coding and expert tasks. Each project states its pay and countries. Some pay per hour of accepted audio, not per hour worked.
Open roles today
35
Pay in listings
$20 to $40/hr
Go to Remo Experts
Remotasks
Task app
Run by Scale AI
Image tagging, transcription and moderation tasks. English is the only requirement.
How you get in
Sign up on its site.
Where
Worldwide
Go to Remotasks
Respondent
Paid research studies
Paid interviews and diary studies.
How you get in
Sign up, and studies appear in your account.
Where
Worldwide, US
Go to Respondent
RWS TrainAI
TrainAI is the contributor arm of RWS, a publicly-listed language services company. Hires globally for AI training across most major languages. Late payment is the most common complaint in reviews. Hires via Lever job board.
Open roles today
127
Pay in listings
No pay listed
How it pays
per task
Go to RWS TrainAI Read our review
Shaip
Data vendor
Data collection, annotation and search evaluation, including Indian languages such as Bengali and Sylheti.
How you get in
Sign up on its community portal. Payouts are weekly.
Where
India, Worldwide
Go to Shaip
Sovrano AI
Expert network
Expert evaluations and data in 23 European languages.
How you get in
Apply on its site.
Where
Europe
Go to Sovrano AI
TELUS Digital AI Community
Data vendor
Run by TELUS Digital
Rater and evaluator roles by language and country, such as Spanish, Arabic and Canadian French.
How you get in
Apply per role on its AI Community page.
Where
Worldwide, Latin America, Middle East, Europe
Go to TELUS Digital AI Community
Tencent Hunyuan ExpertHub
Expert network
Run by Tencent
Chinese-speaking professionals review medical, legal, finance and coding data for Tencent's Hunyuan models.
How you get in
Apply with the online form. Each task shows its rate.
Where
China
Go to Tencent Hunyuan ExpertHub
Terac
Paid partnership
Pays experts and everyday users for AI evaluation, model review, transcription, voice recording and data annotation projects, plus paid research studies. Each opportunity lists its hourly rate and who it is looking for. Fully online.
Open roles today
18
Pay in listings
$4 to $150/hr
Go to Terac
Toloka
Data vendor
Annotation projects in Russian, German, English and other languages.
How you get in
Apply per posting on its annotator job board.
Where
Europe, Russia, Worldwide
Go to Toloka
Turing
Hires contractors to train and test AI models for AI labs, in coding, math, science, medicine, languages and more. Most work is remote.
Open roles today
294
Pay in listings
No pay listed
Go to Turing
Vetto
Hires expert reviewers to improve the scenarios used to train AI models. Most projects are remote and open to applicants worldwide.
Open roles today
20
Pay in listings
No pay listed
Go to Vetto
Welocalize
Language QA at scale. Translation evaluation, speech labeling, multilingual prompt review. Pay is hourly and predictable; project supply is steady for working language pairs.
Open roles today
270
Pay in listings
$2.25 to $37/hr
Go to Welocalize Read our review
xAI
The company behind Grok. Hires AI Tutors to label, record and review data for its models, listed one role at a time on its own job board. Recent postings name the company SpaceXSI. Each listing names the countries it hires in, so check yours before you apply.
Open roles today
20
Pay in listings
No pay listed
Go to xAI Read our review
Yandex
Hires AI trainers to review and improve the answers of its AI, in medicine, law, finance and languages. Postings are in Russian and pay is in roubles.
Open roles today
20
Pay in listings
No pay listed
Go to Yandex

Common questions

How many AI training platforms are there?: The list has 58 platforms. 31 post their roles publicly, with 3,228 open roles on MantaWork today. The other 27 take one application, run a task app or post gigs on a marketplace, so each gets one card.
Which platforms are on the list?: A platform is on the list when a named company pays the worker, joining is free, the application runs on the company's own site or job board, and the work trains, tests or supplies data for AI. Closed platforms are not listed.
How is the list ordered?: The list runs A to Z. Some platforms are marked Paid partnership, and that label does not change a platform's place. No platform pays to be listed.

Browse all 3,228 AI training jobs · Hourly pay by platform · Compare platforms

AI training and data annotation platforms, A to Z

AfterQuery

Amazon Mechanical Turk

Awign

ByteDance Xpert

Clickworker

CrowdWorks (Japan)

Crowdworks (Korea)

DataAnnotation

DataVale AI

Deccan AI Experts

Flitto Arcade

Gray Swan Arena

Handshake AI

Hashlist

Human Science

Karya

Kastle

Label Your Data

Lancers

Neevo

Perle

Prolific

Remotasks

Respondent

Shaip

Sovrano AI

TELUS Digital AI Community

Tencent Hunyuan ExpertHub

Toloka

Common questions