HumanSourcer

Expert AI-training networks

21 expert networks that recruit domain specialists — lawyers, physicians, engineers, scientists, and more — for AI-training and data-annotation work. Filter by domain, company, access model, and geography. Every ownership and status claim links to its public source.

Looking for open-to-anyone task work instead? See thegig platforms directory, orbrowse all providers.

21 of 21 networks
AfterQuery
Expert
AfterQuery Experts

Agent evaluation, model training, writing, ML and professional-domain work

Writing / CreativeReasoning / Agents
Alfons AI
Expert
Alfons AI Talent Network

AI trainers, data annotators and domain experts

Generalist
Labelbox
Expert
Alignerr

AI training, evaluation, coding, writing and specialist review

CodingWriting / Creative
Deccan AI
Expert
Deccan Experts

Model training, evaluation and specialist human–AI interaction

Generalist
G2i
Expert
G2i Talent

Coding task creation, rubrics, evaluation and agent environments

CodingReasoning / Agents
Handshake
Expert
Handshake AI

Generalist and specialist AI evaluation and training projects

Generalist
Human
Expert
Human Expert Network

Language, safety, generalist and specialist AI training

LinguisticsSafetyGeneralist
Scale AI
Expert
Human Frontier Collective (HFC)

Research, STEM, medicine, finance, legal and ML model evaluation

LawHealthcareFinance
iMerit
Expert
iMerit Scholars

Domain-expert GenAI tuning, evaluation and text analysis

Generalist
Mercor
Expert
Mercor Experts

Law, medicine, finance, engineering, operations and AI evaluation

LawHealthcareFinance
Invisible Technologies
Expert
Meridial

Law, STEM, finance, coding, linguistics, safety and AI training

LawFinanceCoding
micro1
Expert
micro1 Experts Opportunities

Professional, creative, scientific and technical AI training/evaluation

Writing / Creative
Toloka
Expert
Mindrift

AI training, reasoning, coding, multilingual evaluation

CodingLinguisticsReasoning / Agents
Pareto AI
Expert
Pareto Experts

High-skill AI training and evaluation allocated by demonstrated performance

Generalist
Prolific
Gig + Expert
Prolific Participants

Research studies, behavioural data and AI evaluation/training tasks

GeneralistCodingHealthcare
RemoExperts
Expert
Rex.zone

Data labelling, RLHF, prompt evaluation, QA and content-safety work

SafetyWriting / CreativeConsulting / Ops
Sepal AI
Expert
Sepal Expert Hub

Specialist AI training and evaluation

Generalist
SuperAnnotate
Expert
SME Careers

Subject-matter-expert AI training and evaluation

Generalist
Surge AI
Expert
Surge Workforce

Domain-expert AI training, evaluation, annotation

Generalist
Turing
Expert
Turing AI Advancement Work

Coding, data science, model evaluation, voice and domain review

CodingScience / STEMVoice / Speech
Vetto
Expert
Vetto Opportunities

Technical, finance, consulting, clinical, QA and planning-AI evaluation

HealthcareFinanceConsulting / Ops