Hire Expert Annotators for Your Scale Studio Projects
Post a job and find skilled data labelers for your Scale Studio projects. Access 124,000+ pre-vetted specialists across image, video, LiDAR, document, and more.
124,000+ AI Trainers
Post & Hire
Post your Scale Studio project on OpenTrain and hire from a curated shortlist of pre-vetted annotators.
Add to Scale Studio

Review proposals, hire directly, and invite your new team into your Scale Studio workspace — no extra onboarding needed.
Manage & Pay
Manage tasks, communication, and payouts through OpenTrain while work happens in Scale Studio.
One Platform to Hire and Manage Your Scale Studio Workforce
Find annotators for your projects and manage everything in one place. No more juggling spreadsheets, chat apps, and payment tools.
Post a Scale Studio Job
Create an account and post your first job in minutes. Describe your annotation requirements, set your rate, and start receiving proposals from qualified candidates.
Post a Scale Studio Job
Create an account and post your first job in minutes. Describe your annotation requirements, set your rate, and start receiving proposals from qualified candidates.
Review Pre-Vetted Proposals
Every candidate goes through AI-powered vetting and interviews before being matched to your job. Review your shortlist, message candidates, and find the right fit.
Review Pre-Vetted Proposals
Every candidate goes through AI-powered vetting and interviews before being matched to your job. Review your shortlist, message candidates, and find the right fit.
Hire and Add to Your Scale Studio Workforce
Once you've made your hires, add them to your Scale Studio workforce. Keep using your existing projects, batches, and ontologies.
Hire and Add to Your Scale Studio Workforce
Once you've made your hires, add them to your Scale Studio workforce. Keep using your existing projects, batches, and ontologies.
Communicate and Manage Work
Message your team, share annotation guidelines and instructions, and track progress in one place. Everything you need to coordinate your Scale Studio projects is built in.
Communicate and Manage Work
Message your team, share annotation guidelines and instructions, and track progress in one place. Everything you need to coordinate your Scale Studio projects is built in.
Pay Securely in One Place
Handle global payments from a single dashboard. No chasing invoices or juggling multiple payment methods.
Pay Securely in One Place
Handle global payments from a single dashboard. No chasing invoices or juggling multiple payment methods.
Staff Your Scale Studio Projects Today
Hire pre-vetted Scale Studio annotators yourself, or let our team build and manage your entire Scale Studio workforce.
Post a Scale Studio Job, Hire Scale Studio Experts
Describe your Scale Studio project and get a curated shortlist of pre-vetted annotators with Scale Studio experience. 15% flat fee.
Full-Service Scale Studio Team
- Recruiting & live vetting
- Onboarding & training
- Daily management & QA
- Dedicated program lead
Build a career training the world's top AI models.
Freelance AI Trainer?
Join 124,000+ freelancers
Data Labeling Company?
Find clients and recruit talent
Pre-Vetted Scale Studio Experts You Can Trust
Every Scale Studio annotator on OpenTrain is verified through live interviews and proctored skills testing — not just AI screening. Choose from 124,000+ pre-vetted experts across 180+ countries.
Pre-Vetted Experts
Countries
Languages
Platforms
The Network
The only talent network purpose-built for Scale Studio and AI training.
Scale Studio Specialists, Not Crowd Workers
Experienced annotators who know Scale Studio inside and out. Matched to your project requirements, not pulled from a generic applicant pool.
Global Coverage, Any Language
Native speakers across 180+ countries and 110+ languages. Build a Scale Studio team in any region or timezone.
AI-Powered Matching
Candidates screened and ranked for Scale Studio experience, domain expertise, and language skills. You review only qualified matches.
Proven at Scale
From 5-person pilots to 500-person production teams. Companies trust OpenTrain to staff their Scale Studio projects at any scale.
We Recruit, Train, and Manage Your Scale Studio Team
A dedicated team working directly in your Scale Studio account. We handle recruiting, training, QA, and daily ops.
Live Proctored Testing
Proctored skills tests for every Scale Studio candidate. Human-watched, no ChatGPT.
Live Interviews
Scale Studio experience verified face-to-face by trained interviewers.
Custom Calibration
Custom tests built for your Scale Studio project and annotation standards.
Scale Studio + OpenTrain FAQ
Common questions about hiring Scale Studio annotators through OpenTrain.




















