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.
/ 60,000+ Vetted AI Data Experts
The #1 Talent Network for AI Training & Data Labeling
Hire pre-vetted domain experts at scale for LLM evaluation, RLHF, red teaming, data labeling, and more. Post a job, get a curated shortlist, and bring talent into any platform you use, on your terms.
/ QUALITY & VETTING
Where Top AI Teams Find Top AI Trainers
Global Network
60,000+ vetted experts across 130 countries and 70+ languages, including hard-to-find specialties.
Domain Specialists
PhD-level and industry experts across technical, scientific, medical, legal, creative, and more.
AI Matching and Screening
Every applicant is AI matched to your spec, resume-checked, and interviewed before you review.
Project-Specific Skill Tests
Candidates complete task tests graded to your rubrics so shortlists are proven on your work.
Exact-Fit Shortlists
Post once and receive a curated list of specialists aligned to your domain, language, and tool stack.
Better Talent. Better Data. Better Models.
/ All-In-One
One Platform to Find, Hire, and Pay AI Training Talent
Source vetted talent, manage projects, and handle payments in one workspace. Keep your preferred tools and workflows.
Post a Job Once, Get Pre-Vetted Matches Fast
Post once and receive a vetted shortlist of domain experts. Our AI screens resumes, runs skills tests, and conducts live interviews so you review only qualified candidates.
How It Works
Use Any Data Labeling Tool
Keep your stack and workflows. Invite AI Trainers and Data Labelers into your existing annotation software or custom tool with full control.
See Integrations
Communication and Project Hub
Centralize chat, announcements, and documents. Share and update instructions, assign training modules, and keep projects organized in one workspace.
How It Works
Global Payments & Transparent Pricing
Pay talent securely in the platform with a simple flat fee. No bundled software markups and predictable costs as you scale.
View Pricing
/ Talent Network
Find the Human Data Experts You Need to Build the Best AI
OpenTrain is where AI teams find specialized human data experts. Our AI matching and interviews surface exact-fit specialists for any project, fast.
60,000+ pre-vetted experts spanning 130 countries and 70+ languages
AI matching with resume screening and live interviews tailored to your project
Domain expertise across any field, including technical, scientific, creative, and more
/ Process
How OpenTrain Works
Create your account, post a job, and let our AI do the heavy lifting so you can focus on better models.
/ 01
Post a Job & Reach Pre-Vetted Experts
Post your role and requirements. Our AI screens resumes, tests skills, and runs interviews so you review a shortlist of exact-fit domain experts.
/ 02
Hire and Integrate Into Your Data Labeling Tools
Easily hire and invite your team into any data labeling platform or your own environment while keeping full control over setup and workflow.
/ 03
Manage Work and Pay in One Place
Use one workspace for chat, instructions, training modules, progress tracking, and secure payouts so production moves faster and teams stay aligned.
Post Your AI Data Job Now
Create an account, post your role, and get a curated shortlist from 60,000+ experts to hire fast in your tools.
Post a Job Large Project? Explore Our Managed Service
For large or complex work, we recruit, onboard, manage, and QA a dedicated team inside your tools.
Managed Service Better data quality
*
Flexible tooling
Transparent Pricing
*
Simplify AI Data Ops
Better data quality
*
Flexible tooling
Transparent Pricing
*
Simplify AI Data Ops
/ AI Data Talent Layer
Find the Best AI Trainers.
Build the Best AI Models.
Post a job and get a curated shortlist of vetted AI Trainers and Data Labelers within 24 hours. Hire them into any annotation tool. No commitment required.
/ Solutions
Find Talent For Any AI Data Need
LLM & Agents
Find vetted domain experts to train and evaluate your LLMs, driving higher quality and more reliable model behavior.
LLM Evaluation 
Red Teaming 
Hallucination Audits 
RLHF & Preference Data 
Supervised Fine-Tuning 
Code Generation Review 
Function Calling 
Computer Use Agent Training 
Reasoning Step Verification 
Multilingual AI Training 
Reasoning Problem Creation 
Agent Simulations 
RL Environment Design View All LLM & Agent Solutions
Structured Data Labeling
Hire experienced annotators to deliver precise, consistent labels at scale across vision, text, audio, and 3D.
Document Annotation 
Image Annotation 
Segmentation 
Video Annotation 
Text Annotation 
Speech and Audio Labeling 
Time Series Annotation 
Point Cloud Annotation 
Medical Imaging Annotation 
Satellite Imagery Annotation View All Data Labeling Solutions
/ INTEGRATIONS
Hire Experts For Any Data Labeling Tool
Hire from the #1 network for AI Trainers and Data Labelers. Post a job and bring pre-vetted experts into any tool you use.
Your Custom Tool
Custom
Label Studio
Multimodal
Roboflow
Vision
AWS SageMaker
Multimodal
CVAT
Vision
Scale Studio
Multimodal
SuperAnnotate
Multimodal
Encord
Vision
Dataloop
Multimodal
Kili Technology
Multimodal
Supervisely
Vision
V7 Darwin
Vision
Datature
Vision
Snorkel AI
Programmatic
Argilla
Text
Datasaur
Text
Prodigy
Programmatic
/ FAQ
Simple Answers to Common Questions.
What OpenTrain is, how vetting works, pricing and payments, tool compatibility, self service vs managed, and how freelancers join.
OpenTrain is a talent network and platform. You use it to find, hire, and manage AI trainers and annotators at scale. Work happens inside the tools you choose. You can run projects yourself or have our team manage them end to end.
Vetting is project specific. When you post a role, applicants go through AI resume screening, skills tests, and a live AI interview tailored to your requirements. You receive a curated shortlist of exact-fit candidates. For managed programs we can add paid task tests and deeper calibration.
You pay talent directly at transparent rates with a simple flat platform fee. Choose hourly, task based, or milestone based payments. Funds are handled securely and payouts are supported globally. No bundled software markups and no long commitments.
Yes. Invite hires into any annotation software or your custom environment. You keep full control over permissions, workflow, and QA policies. There is no tool migration or lock in.
Self Service: Post a job, review a curated shortlist, hire and manage talent directly in your tools. Managed Service: We recruit, onboard, schedule, train, and manage the team with quality assurance, operating inside your tools with a single point of contact.
Create an account and complete your profile. Apply to projects that match your skills and languages. For each project you will complete screening steps and a live AI interview. Approved work is paid through OpenTrain with secure global payouts.
/ 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 Projects Done-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.