AI-focused talent marketplace connecting vetted professionals with project-based AI, data, and engineering roles. Mercor emphasizes skill matching and longer-term project work, positioning itself closer to a talent network than a traditional data annotation platform.
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68 companies that hire remote AI trainers, data annotators, evaluators and domain experts. Joining is free. The more platforms you are on, the more projects you get offered — most work is assigned to people who already have a profile.
How to do it fast: use the same email everywhere, keep one up-to-date résumé/LinkedIn, list every language you speak and your strongest subject, and finish each platform's assessment right after signing up. Never pay anyone to get access to AI training work.
AI workforce and staffing platform that connects companies with vetted global talent for AI training, evaluation, and domain-specific projects. Micro1 is known for higher-paying roles that often require subject-matter expertise in areas such as medicine, law, finance, or advanced STEM fields.
Sign up at Micro1 →AI data annotation platform offering tools and projects for image, video, text, and LLM-related annotation tasks, often used in computer vision and advanced AI training workflows.
Sign up at SuperAnnotate →Decentralized talent network connecting vetted professionals with AI, engineering, and data-related projects. Braintrust is often used for AI training, evaluation, and model-related work through client-driven projects rather than open task marketplaces.
Sign up at BrainTrust →AI training data company that hires remote contractors worldwide for RLHF and prompt rating, red teaming, coding review, vision annotation, gaming and first-person video capture projects. Roles are contractor-based with hourly pay in USD, no fixed hours and a quick online application.
Sign up at Claru →AI data development company whose Expert Community connects professionals and academics with paid projects for frontier AI labs. Experts create domain data, review peer submissions and evaluate AI outputs in math, law, finance, coding, chemistry, physics, biology, medicine and the humanities. Work is contract-based and paid per project.
Sign up at Snorkel AI →Career and talent platform primarily focused on connecting students and early-career professionals with employers, including opportunities related to AI training, data labeling, research assistance, and technical support roles. Handshake is commonly used for entry-level and academic-adjacent AI projects rather than open microtask-based annotation.
Sign up at Handshake AI →Platform specialized in AI response comparison, evaluation, and human feedback tasks used to improve large language models. DataAnnotation.tech focuses on reasoning-heavy work such as ranking AI outputs, assessing correctness, and providing structured feedback, making it particularly suitable for contributors interested in LLM evaluation rather than simple data labeling.
Sign up at DataAnnotation.tech →Global AI services provider offering search evaluation, AI training, and linguistic data work for major technology companies. TELUS International AI operates structured, project-based programs (including former Lionbridge AI roles) and is especially well known for multilingual AI evaluation and search quality tasks.
Sign up at TELUS →One of the longest-running AI data annotation companies, providing a wide range of remote AI training, language, and data labeling projects. Appen offers both entry-level crowdwork tasks and more specialized projects, making it a common starting point for people entering the AI training space.
Sign up at Appen →Global language and localization company that also works on large-scale AI training and multilingual data annotation projects, including text, audio, and language-specific AI evaluation tasks for enterprise clients.
Sign up at TransPerfect →AI training and data services platform focused on LLM evaluation and human feedback, supporting the improvement and alignment of large language models through structured review and assessment tasks.
Sign up at Mindrift →13. iMerit
21 open jobs →Enterprise-level AI data services company specializing in high-quality data annotation, model evaluation, and AI training for complex use cases such as computer vision, NLP, healthcare, and autonomous systems.
Sign up at iMerit →14. Outlier
7 open jobs →AI training platform focused on reviewing and evaluating AI-generated responses, completing structured tasks, and contributing to specialized AI improvement projects. Known for relatively easy onboarding and flexible, project-based work, Outlier is often used for LLM response evaluation and human feedback tasks.
Sign up at Outlier →AI operations and data services company focused on large-scale AI training, process optimization, and behind-the-scenes data work for enterprise clients. Invisible Technologies is known for structured, remote AI-related roles involving data review, content operations, and AI model support, often organized in long-term, team-based projects.
Sign up at Invisible →Global AI training and crowdsourcing platform offering data annotation, transcription, translation, and linguistic evaluation tasks. OneForma is widely used for multilingual AI projects and is particularly suitable for global contributors and language-based AI training work.
Sign up at OneForma →Global localization and language services company offering AI training, search evaluation, and linguistic data annotation projects. Welocalize is especially known for multilingual AI work and structured, project-based remote roles.
Sign up at Welocalize →Enterprise-level AI data services company specializing in large-scale data annotation, content processing, and AI training support. Innodata focuses on structured, professional AI projects rather than open microtask platforms.
Sign up at Innodata →AI training platform focused on cognitive labeling, decision evaluation, and ethical AI alignment tasks. Alignerr emphasizes high-quality human reasoning and judgment rather than large-scale microtask annotation.
Sign up at Alignerr →AI training and evaluation platform offering project-based data annotation and quality assurance tasks. Stellar AI focuses on accuracy, consistency, and guideline-driven work rather than high-volume microtasking.
Sign up at Stellar AI →21. Cohere
3 open jobs →Enterprise AI company focused on large language models (LLMs) and language intelligence. Cohere offers expert-level roles and research-oriented opportunities related to AI training and model evaluation, rather than open crowd-based annotation tasks.
Sign up at Cohere →Global localization, language, and AI data services company working with enterprise and research clients on large-scale AI training, data annotation, and language-related projects, especially in regulated and technical fields.
Sign up at RWS →AI research and product company focused on large language models, reasoning systems, and advanced AI development. xAI offers highly selective AI tutor, research and engineering roles rather than open, crowd-based AI training tasks.
Sign up at xAI →24. Toloka
About Toloka →Global crowdsourcing platform offering data annotation, content evaluation, and AI training microtasks. Toloka is beginner-friendly and provides small, task-based work used to train and evaluate machine learning models.
Sign up at Toloka →Online research platform connecting participants with paid academic and industry studies, including tasks used for AI training, human feedback, and data collection. Prolific focuses on short research-based studies rather than ongoing data annotation work.
Sign up at Prolific →Global data operations company providing human-in-the-loop services for AI systems. CloudFactory focuses on structured, team-based data annotation and validation work rather than open microtask platforms.
Sign up at CloudFactory →Premium AI data services company focused on RLHF (Reinforcement Learning from Human Feedback) and high-quality human evaluation for advanced AI models. Surge AI operates through selective contracts and managed teams, not open crowd-based tasks.
Sign up at Surge AI →Microtask-based platform offering occasional AI-related tasks such as data labeling, content review, and basic human feedback. TaskVerse is easy to access and beginner-friendly, but task availability can be inconsistent.
Sign up at TaskVerse →Task-based platform offering flexible AI-related work such as data labeling, content evaluation, and basic human feedback tasks. Uber AI Solutions focuses on short, on-demand assignments, making it suitable for supplemental or entry-level AI work.
Sign up at Uber AI Solutions →Expert-focused AI training and evaluation platform by RemoExperts connecting vetted professionals with high-value remote projects such as LLM evaluation, RLHF, domain-specific analysis, and advanced data annotation.
Sign up at Rex.Zone →Platform collecting real-world audio data to support speech and AI model development. Contributors earn by capturing and submitting audio recordings through the app, helping improve voice and sound recognition systems.
Sign up at Silencio →Enterprise-level AI data solutions company providing scalable data pipelines, human-in-the-loop workflows, and high-quality datasets for AI projects, with a focus on large clients in regulated industries.
Sign up at Centific →Ethos is an expert network backed by Andreessen Horowitz that uses an AI voice interview to learn about your experience and then matches you with paid opportunities, including AI training and evaluation projects.
Sign up at Ethos →Sigma AI is a data-annotation company with roots in linguistic projects and a strong presence in Europe and Latin America. It hires freelancers to label data, transcribe speech and evaluate AI output in dozens of languages.
Sign up at Sigma AI →Turing started as a marketplace for remote software engineers and now focuses on training and evaluating AI models for frontier labs. Most listings are for developers who write, review and debug code used to improve LLM coding ability.
Sign up at Turing →36. e2f
5 open jobs →e2f is a language data company that creates multilingual datasets for AI. It hires translators, linguists and native speakers for annotation, evaluation, prompt writing and transcription.
Sign up at e2f →37. Aptura
17 open jobs →Aptura builds an expert community that helps AI labs train and evaluate models. Listings often target licensed professionals such as doctors and medical experts, as well as other specialists.
Sign up at Aptura →HumanSignal is the company behind Label Studio, a popular open-source data-labeling tool. It also runs a data-services arm that recruits experts for paid AI training projects.
Sign up at HumanSignal →Cognito AI hires AI data trainers worldwide for visual and multimodal projects: image object recognition and classification, video captioning, scene descriptions and evaluation of image-generation models.
Sign up at Cognito AI →40. Vetto
4 open jobs →Vetto runs expert-driven AI projects for model developers. Openings target engineers, coders, data and automation specialists and other professionals who help plan, build and evaluate AI training data.
Sign up at Vetto →AuraOne runs a human-data job board where AI labs hire professionals to evaluate and train models. Listings range from entry-level AI evaluation specialists to registered nurses, administrative professionals and scenario designers.
Sign up at Aura One →AfterQuery is a Y Combinator-backed company that produces expert data for frontier AI labs. It hires professionals and specialists to build hard evaluation problems, write gold-standard answers and review model reasoning.
Sign up at Afterquery →43. Terac
49 open jobs →Terac posts paid expert studies and data-annotation tasks for teams building AI. Opportunities range from short professional surveys and interviews to longer annotation projects.
Sign up at Terac →Respondent.io connects professionals and consumers with companies running paid research: video interviews, usability tests, surveys and focus groups. Many studies now involve AI products.
Sign up at Respondent.io →Rise Data Labs hires AI training specialists to create and review data for language models. Openings cover programming (Python, JavaScript, C#, SQL, HTML), chemistry, finance, data annotation and non-English languages such as French.
Sign up at RiseDataLabs →LXT is an AI data company specialising in speech and language data. It hires people around the world for audio recording, transcription, annotation, search relevance and evaluation of AI systems in many languages and dialects.
Sign up at LXT →47. Babel
43 open jobs →Babel Audio collects conversational speech data for AI. Its best-known role is the conversation partner: you record natural, unscripted conversations with another participant to help train voice AI.
Sign up at Babel →Fleet AI builds training environments where AI agents practise real tasks. Its remote Fleet Fellow contract roles hire domain experts, for example lawyers and mechanical engineers, to create tasks and reference answers for AI evaluation, with specialist rates up to $150–$200/hr.
Sign up at Fleet AI →OpenTrain AI is a marketplace that collects AI training jobs from many data-labeling companies in one place. You create one freelancer profile and apply to annotation, evaluation and expert projects posted by different clients.
Sign up at OpenTrain AI →Deccan AI, formerly Soul AI, runs an invite-based network of experts who train and evaluate AI models for leading labs. Projects cover coding, STEM, languages and other domains, paid per hour.
Sign up at Deccan AI (Soul AI) →Clickworker is a long-running crowdwork platform with small paid tasks: AI data collection, text writing and checking, surveys, audio and video recordings, app testing and UHRS search-rating tasks.
Sign up at Clickworker →Wirestock pays photographers, illustrators, graphic designers and game artists for content used to train AI models, alongside selling their work on stock sites. Creators join paid projects that match their skills.
Sign up at Wirestock →Hive Micro is a microtask platform from Hive, an AI company. Workers label images, video and text through a simple web app and are paid per completed task.
Sign up at Hive Micro →54. Neevo
About Neevo →Neevo is the contributor platform of Defined.ai. Members record their voice, transcribe and annotate audio, and complete text tasks in many languages to build speech and language AI datasets.
Sign up at Neevo →Sahara AI runs a Data Services Platform where contributors label data, transcribe and evaluate text for AI developers. Rewards are paid in crypto, and you sign in by connecting a crypto wallet.
Sign up at Sahara AI →RealTrainAI screens experts and matches them to AI training projects in medicine, biology, software engineering, law, finance and other fields. Open projects list hourly ranges of roughly $20–$140.
Sign up at RealTrainAI →57. Perle
80 open jobs →Perle hires remote contributors in many countries for AI data projects: audio recording, transcription, egocentric video, face-motion capture and language specialist roles.
Sign up at Perle →DATAmundi runs language and data collection projects for AI: voice recordings in rare languages and dialects, photo and video collection, transcription and language assessment.
Sign up at DATAmundi →Pasiflora AI recruits credentialed experts for AI training and AI safety work across more than a hundred fields. A few roles are hiring at any time; the rest are interest lists that notify you when they open.
Sign up at Pasiflora AI →60. Shaip
10 open jobs →Shaip runs paid data collection projects for AI through its Shaip Work app: voice recordings in many languages and dialects, image and video capture, wake-word recordings and similar tasks.
Sign up at Shaip →Shipd is Datacurve's platform for software engineers, ML engineers and data scientists. You solve real coding quests and bounties used to train AI models and get paid for each accepted solution.
Sign up at Shipd (Datacurve) →User Interviews connects participants with paid research studies run by product and UX teams: one-on-one interviews, focus groups, multi-day studies and unmoderated tasks, typically paying $50–$150+ per study.
Sign up at User Interviews →CleverX is an expert network and research platform that pays professionals for interviews, surveys and AI training projects. Experts set their own hourly rate.
Sign up at CleverX →rustLabs builds AI training data with domain experts in software engineering, finance, machine learning, STEM, law and medicine. Applicants take an assessment and are then assigned to projects.
Sign up at rustLabs →Aligned Labs works with experts who train and evaluate AI models on specialised tasks. Contributors set their own hourly rate and are invited to projects that match their expertise.
Sign up at Aligned Labs →Twine AI recruits data collectors worldwide for AI datasets: voice and video recordings, photos and other media. You apply once and are matched to projects based on your language, location and demographics.
Sign up at Twine AI →DiagnosUs is a mobile app from Centaur Labs where medical students, clinicians and other skilled users label medical images in competitions and win cash prizes for accurate answers.
Sign up at DiagnosUs →Prime Intellect pays developers bounties for building reinforcement-learning environments used to train open AI models. Open bounties pay roughly $100–$500, application-only bounties up to several thousand dollars.
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