AI-training & data-annotation providers
72 providers across three tiers: 22 expert networks that recruit domain specialists (lawyers, physicians, engineers), 41 gig/task platforms open to anyone, and 10 managed workforces with no public self-serve worker portal. Filter by tier, domain, company, access model, and geography below — every ownership and status claim links to its public source.
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Data annotation, curation, model evaluation
Agent evaluation, model training, writing, ML and professional-domain work
Data annotation agent training and employment pathway
Rater, analyst, evaluator, annotator and data-collection roles
AI trainers, data annotators and domain experts
AI training, evaluation, coding, writing and specialist review
Managed AI-data annotation workforce, hired through a corporate careers route.
Search relevance evaluation, autonomous driving data, various AI training tasks
Data annotation and AI-data operations
AI training, evaluation, technical and professional expert projects
Data collection, RLHF, supervised fine-tuning, model safety evaluation
AI training, surveys, voice/image collection, categorisation and search relevance
Annotation, validation, curation for computer vision and NLP
Managed AI-data annotation workforce, hired through a corporate careers route.
Academic and commercial studies; some AI evaluation/data collection
Search rating, annotation, language, speech, data collection and LLM tasks
Project-based data annotation
Data entry, extraction, transcription, moderation, analysis and annotation
Generalist and expert AI training; coding, STEM, law, medicine, writing
Data sourcing, annotation, user studies and AI evaluation
Data collection, annotation, linguistic and study-based projects
Translation, verification, editing, QA and potentially AI-data projects
Linguistics, transcription, annotation, data labelling, testing and search evaluation
Model training, evaluation and specialist human–AI interaction
Managed linguist and AI-data workforce, recruited on a campaign-led or direct-sourcing basis.
Primarily enterprise annotation software; no open crowd/tasker route found.
Coding task creation, rubrics, evaluation and agent environments
AI training tasks for language model development, project-based work
Generalist and specialist AI evaluation and training projects
Image/text classification and small labelling tasks
Language, safety, generalist and specialist AI training
Research, STEM, medicine, finance, legal and ML model evaluation
Data annotation and AI-training work for conflict-affected and displaced communities, accessed through a partner network and training programmes.
Domain-expert GenAI tuning, evaluation and text analysis
Human-data annotation and AI-training delivery through corporate/project vacancies rather than an evergreen contributor portal.
Data annotation and AI-training work delivered through local programmes and partner organisations, primarily in India and selected expansion markets.
Annotation software plus managed services; contributor sourcing is not publicly exposed.
AI data, language, testing and evaluation projects
Speech data, audio, and NLP data collection and annotation
Research, surveys, labelling and data-processing tasks
Law, medicine, finance, engineering, operations and AI evaluation
Law, STEM, finance, coding, linguistics, safety and AI training
Professional, creative, scientific and technical AI training/evaluation
AI training, reasoning, coding, multilingual evaluation
Text, audio, image and video collection, annotation and validation
Translation, speech, annotation, collection, quality and multilingual AI work
Data labelling, RLHF, fine-tuning and AI-training projects
AI response evaluation, writing, coding, maths and specialist reasoning
High-skill AI training and evaluation allocated by demonstrated performance
Research studies, behavioural data and AI evaluation/training tasks
Data labelling, multimodal annotation and AI evaluation
Data labelling, RLHF, prompt evaluation, QA and content-safety work
Data labeling, RLHF, text/image/audio/video annotation
Voice recording, conversations, transcription and language data
Data validation and quality assurance
Enterprise managed data-labeling services; worker-facing hiring for Scale AI happens through its separate consumer brands, not this corporate careers page.
Specialist AI training and evaluation
Data annotation and AI-data roles
Software engineering datasets, coding challenges, reviews and annotations
Audio data collection and labeling for AI training
Subject-matter-expert AI training and evaluation
Data annotation and AI training projects
AI data annotation, image/video annotation, expert evaluation
Domain-expert AI training, evaluation, annotation
Data collection and annotation tasks
Search and ads rating, maps, safety, annotation and data collection
Online rating, data collection, annotation, search and ads evaluation
Coding, data science, model evaluation, voice and domain review
Text, image, audio, video, LiDAR labeling for AI training
Primarily enterprise annotation software; no open crowd/tasker route found.
Technical, finance, consulting, clinical, QA and planning-AI evaluation
Multilingual evaluation, AI safety, search relevance and annotation