Platforms

Pay, eligibility, onboarding and risks, with sources.

Alignerr

Labelbox's expert network: AI-training projects in coding, languages and many other fields.

Coding pay (posted)

$60–120/hr

codinglanguagemedicalstem+4

Some evaluation phases are unpaid; unaccepted tasks are not paid; BBB rating F

Appen (CrowdGen)

One of the oldest AI-data companies: language, rating and expert projects through CrowdGen.

codingmedicallegalfinance+3

Stalled ID checks, little work after onboarding, Trustpilot 1.6/5

CloudFactory

Managed AI-data workforce, mainly in Nepal, Kenya, the Philippines and Colombia, plus per-country capture projects.

datagenerallanguageengineering

Low-pay reports; you supply laptop and internet; some projects use your own voice or card data

DataAnnotation

Self-serve AI-training tasks after one unpaid assessment; pick your own hours, paid via PayPal.

Coding pay (posted)

$40–150/hr

codingstemmedicallegal+5

Rejected applicants usually hear nothing; reports of lockouts with earnings held; 2025 misclassification suit

Handshake AI

Handshake's AI-training fellowship for graduate-level experts, mostly in the US.

Coding pay (posted)

$65–150/hr

codingstemmedicalfinance+3

Reported suspensions with pay withheld; AI-tool use means unpaid work; onboarding usually unpaid

Mercor

Expert AI-training contracts for engineers and professionals, screened by an AI interview.

Coding pay (posted)

$70–150/hr

codingmedicallegalfinance+3

March 2026 data breach and class actions; projects can end with little notice

micro1

AI-training and expert roles, screened by micro1's AI interviewer, paid via Deel.

Coding pay (posted)

$50–120/hr

codingmedicallegalfinance+3

Being certified does not guarantee a placement; contracts require individual arbitration

Mindrift

Toloka's expert network: per-task AI-training projects in engineering, medicine, coding and more.

Coding pay (posted)

$30–90/hr

codingstemengineeringmedical+7

Task supply not guaranteed; quality scores can quietly cut access

Outlier

Scale AI's contributor platform: coding, STEM, language and generalist AI-training tasks.

codingstemlanguagewriting+3

Empty task queues and unexplained deactivations; misclassification settlement pending

RWS TrainAI

RWS's AI-data community: language, search-evaluation and annotation work in 175+ countries.

languagegeneraldatalegal

Payment-delay complaints (Trustpilot 1.8/5); some country rates are very low

Scale AI Human Frontier Collective

Scale AI's invite-style network for PhD-level and senior experts (separate from Outlier).

codingresearchstemmedical+2

No rate until matched to a project; Meta owns 49%; worker lawsuits against Scale

Welo Data

Welocalize's AI-data arm: rater, search-evaluation and language roles locked to a country and language.

languagedatageneralresearch+1

Unpaid testing, 'project is full' reports, very low rates in some countries, recruiter scams

xAI (AI Tutor)

Grok's AI-tutor roles: hourly, often as employees with US benefits; now under SpaceX.

languagewritinglegalgeneral+1

Hubstaff monitoring on personal laptops; explicit-content projects; layoffs in 2025 and 2026