Outlier
Outlier hires remote experts to review and train AI model outputs on a freelance basis.
Companies pay knowledgeable humans to review, rate and improve AI model outputs. Work is remote, flexible and open to UK residents. Reward figures vary — always verify current pay rates on the platform itself.
Full write-ups on the platforms we track — pros, cons, application steps and FAQs.
Expert-level AI evaluation with hourly pay.
Writing & coding tasks for LLM training.
Higher-paid alignment work for specialists.
Long-established remote AI community projects.
AI, localisation and search-quality raters.
Micro-tasks, transcription and evaluation.
High-volume micro-task platform.
Advanced trainer programmes for skilled operators.
Mature crowdsourcing platform at scale.
Newer AI-adjacent contract work.
Outlier hires remote experts to review and train AI model outputs on a freelance basis.
Alignerr pays subject-matter experts to align AI models through structured feedback.
DataAnnotation offers remote projects grading and refining AI model responses.
TELUS Digital (formerly TELUS International) runs paid AI evaluation programmes for UK workers.
Welocalize hires linguists and evaluators for AI training and localisation work.
Clickworker offers micro-tasks including AI training data creation and review.
OneForma by Pactera Edge runs AI evaluation, search rating and transcription projects.
Appen is a global platform for AI data and evaluation work, open to UK freelancers.
Invisible Technologies hires remote operators for AI training and advanced tasks.
RWS (via TrainAI) runs paid AI data collection and evaluation programmes.
Stellar AI recruits remote contractors to work on AI training projects such as writing, coding evaluation and prompt review. Application-based; not all applicants are approved.
Toloka is a global crowdsourcing platform offering micro-tasks and expert AI training projects. Earnings depend on available tasks in your country.
If you're new to AI training work, sign up to two or three platforms so you're not reliant on any single project pipeline. Read our side-hustle guides for tips on juggling remote work around a day job.