Platform Overview
Hire, manage, and pay top AI Trainers & Data Labelers in one place while working in the tools you already use
Find Data Labeling Vendors
Browse vetted agencies and BPOs for large-scale projects.
List your data labeling company
Create a free company profile, receive matched RFPs, and submit proposals with your pricing, capacity, and timeline.
JOIN AS Freelancer
The #1 Platform for Finding AI Training Jobs
We bring AI training and data labeling jobs from 20+ platforms into one place.
Work With Us
Hire Freelancers
Post a Job to the #1 Network for AI Training Talent Now
Post your job and find pre-vetted AI Trainers & Data Labelers across any domain, language, or tool.
FOR LARGE PROJECTS / MANAGED SERVICE
Done-for-You AI Data Teams
For large or complex projects. We recruit, train, manage, and QA your team inside your tools.
JOIN AS Freelancer
The #1 Platform for Finding AI Training Jobs
We bring AI training and data labeling jobs from 20+ platforms into one place.
LLM & Agents
View All LLM & Agent Solutions
Structured Data Labeling
View Data Labeling Solutions
Work With Us
Hire Freelancers
Post a Job to the #1 Network for AI Training Talent Now
Post your job and find pre-vetted AI Trainers & Data Labelers across any domain, language, or tool.
FOR LARGE PROJECTS / MANAGED SERVICE
Done-for-You AI Data Teams
For large or complex projects. We recruit, train, manage, and QA your team inside your tools.
Work With Us
Hire Freelancers
Post a Job to the #1 Network for AI Training Talent Now
Post your job and find pre-vetted AI Trainers & Data Labelers across any domain, language, or tool.
FOR LARGE PROJECTS / MANAGED SERVICE
Done-for-You AI Data Teams
For large or complex projects. We recruit, train, manage, and QA your team inside your tools.
Data Labeling Solutions / Text Annotation
Hire Expert Text Annotators for Any Tool
Post a job and hire text annotators for classification, NER, sentiment, and content moderation in any platform. 70+ languages and experts in healthcare, finance, legal, and more. 100,000+ pre-vetted Data Labelers.
Why Top AI Teams Choose OpenTrain for Text Annotation
Annotators to QA Leads
Annotators, moderators, and QA reviewers for any project
Use Any Tool
Work inside any labeling platform or internal environment
Any Domain or Language
Healthcare, finance, legal, and more across 70+ languages
All-In-One
One Place to Hire and Manage Your Text Annotation Team
Everything you need to build a team that delivers accurate labels, consistent classifications, and production-ready datasets for your NLP models.
The #1 Network for Text Annotation Talent
Text annotators, content moderators, and QA reviewers across 70+ languages. Healthcare, finance, legal, customer support, and more. Find the right people for any text annotation project.
Post a Text Annotation Job
Invite Hires Into Any Labeling Platform
Data Labelers work inside any annotation tool or your internal environment. You control access and permissions. Your data never leaves your systems.
Post a Text Annotation Job
Communication and Project Hub
Built-in chat, document editor, and everything you need to coordinate annotation across distributed teams. Share guidelines and instructions, message your team, and keep everyone aligned in one place.
Post a Text Annotation Job
Secure Global Payments and Transparent Pricing
Pay Data Labelers in any country from a single dashboard. You set the rates, we add a small fixed fee on top. No hidden costs, no chasing invoices.
Post a Text Annotation Job
Why OpenTrain 
Hire Text Annotators for Any Classification or Labeling Task
Post a job and get a shortlist of qualified text annotators, content moderators, and QA reviewers ready to work in any labeling tool or internal platform. Hire for:
Text classification for topic tagging, intent detection, and multi-label categorization
Named entity recognition for extracting people, organizations, locations, products, and custom entities
Sentiment and emotion labeling for customer feedback, reviews, and social media analysis
Content moderation for policy labeling, toxicity detection, and trust and safety workflows
QA and adjudication for consistency checks, disagreement resolution, and gold set creation
How It Works
How OpenTrain Works for Text Annotation
Create your account, post a job, and hire Data Labelers who work inside your existing tooling.
01
Post a Text Annotation Job & Receive Pre-Vetted Applicants
Describe your project and the skills you need. Receive proposals from text annotators, content moderators, and QA reviewers with proven experience in your domain.
02
Hire and Add to Any Labeling Platform
Review candidates, make your hires, and invite them to any annotation tool or your internal environment.
03
Communicate and Pay in One Place
Share guidelines and taxonomies, message your team, and handle global payments from a single dashboard.
Post Your Text Annotation Job Now
Create an account and post your first job in minutes.
Post a Text Annotation Job Large Project? We Can Help.
Get a dedicated team managed end-to-end for large text annotation projects.
Get a Managed Service Quote Get Started
Start Building Your Text Annotation Team Today
Post your first job and connect with text annotators, content moderators, and QA reviewers who work inside any labeling platform or your own internal environment.
Metrics
Where AI Teams Hire for Text Annotation at Scale
The largest network of text annotators, content moderators, and QA reviewers, ready to work in any labeling platform or custom environment.
100K+
pre-vetted data labeling specialists
50+
domains and specializations
24 hrs
avg. time from job post to production start
Resources
Related Articles
Guides and insights for text annotation
FAQ
FAQs about Hiring for Text Annotation
Quick answers to common questions about text annotation projects and Data Labeler hiring on OpenTrain.
You can hire for text classification, named entity recognition (NER), sentiment analysis, intent detection, content moderation, PII tagging, span labeling, and more. Whether you need single-label classification, multi-label tagging, or hierarchical taxonomies, you can find annotators with the right experience.
Yes. Our network includes text annotators with backgrounds in healthcare, finance, legal, customer support, e-commerce, cybersecurity, and more. You can filter candidates by domain and require specific qualifications in your job post.
Yes. You hire annotators on OpenTrain, then invite them into any labeling tool you already use, such as Label Studio, Labelbox, Argilla, or your own internal environment. Your data stays in your systems.
Every Data Labeler on OpenTrain has a profile with work history, client reviews, and ratings from past projects. You can evaluate candidates based on their track record, filter by relevant experience, and hire annotators who have already proven themselves on similar work.
Our network spans 70+ languages. You can hire native-speaker annotators for multilingual classification, sentiment analysis, content moderation, and entity extraction projects.
For large or complex projects, we offer a managed service where we handle recruiting, onboarding, QA oversight, and team coordination end-to-end. Contact us for a managed service quote.
Integrations
Hire for Any Text Labeling Platform or Internal Tool
Hire Data Labelers on OpenTrain, then invite them to any annotation platform or your own internal environment.
Get Started
Join the #1 Platform for AI Training Talent
Where top AI builders and expert AI Trainers connect to build the future of AI.
Self-Service
Post a Job
Post your project and get a shortlist of qualified AI Trainers and Data Labelers. Hire and manage your team in the tools you already use.
Managed Service
For Large ProjectsDone-for-You
We recruit, onboard, and manage a dedicated team inside your tools. End-to-end operations for large or complex projects.
For Freelancers
Join as an AI Trainer
Find AI training and data labeling projects across platforms, all in one place. One profile, one application process, more opportunities.