Hire Expert Annotators for Any Tool
Post a job and hire from 150,000+ pre-vetted AI Trainers and Data Labelers directly into your annotation platform — Label Studio, CVAT, Encord, or your own custom tool.








































































































Multimodal
Full-stack annotation platforms supporting image, video, text, audio, and 3D point cloud labeling.






Vision
Specialized tools for image and video annotation — bounding boxes, segmentation masks, keypoints, and more.
Text
NLP-focused platforms for text classification, NER, relation extraction, and document annotation.
Programmatic
Code-first and programmatic labeling tools for teams that prefer scripting over GUI annotation.
Custom
Bring your own tool. OpenTrain talent works in any software — proprietary, internal, or custom-built.
Frequently Asked Questions
Common questions about hiring annotators for your data labeling tools.