Find & Hire Experts for Any Data Labeling Tool
Hire Experts For Any Data Labeling Tool
How OpenTrain Works
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Frequently Asked Questions
Yes. OpenTrain works with any data labeling tool, including Label Studio, Labelbox, CVAT, V7, Argilla, and many more. If you use custom or internal software, that works too.
Most clients add experts directly in their data labeling tool by entering their email address, just like adding any contractor. If you want to automate this, we offer API integrations with some tools where you can connect your API key.
No. Your data stays in your tool. OpenTrain never accesses, stores, or hosts your datasets. We're the talent layer, not the tool.
Select "Your Custom Tool" when posting your job and describe the environment. You can invite talent via email or SSO just like any other user.
Most experts on OpenTrain have experience across multiple data labeling tools. You can filter for tool-specific experience when posting, and provide onboarding materials through the OpenTrain workspace.
Yes. With self-service, you post a job, hire experts, and manage them in your tools. With managed service, we recruit, onboard, and manage the team for you, but work still happens inside your tools.
Find Talent For Any AI Data Need
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 
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