OpenTrain AI

OpenTrain AI is a talent network and managed service for sourcing, vetting, and deploying human contributors for AI training and data labeling. The platform connects AI labs and companies with more than 236,000 pre-vetted domain experts across 190+ countries and 120+ languages, including PhDs, engineers, clinicians, legal specialists, and creative professionals.

Hiring teams can post a job in minutes and receive a curated shortlist of candidates matched to their domain, language, and skill requirements. OpenTrain screens resumes, runs AI interviews, and conducts skills testing so reviewers only see qualified matches. A 15% flat platform fee applies for self-service hiring, while a 20% managed service option handles recruiting, onboarding, QA, and ongoing team management with a dedicated program lead.

The platform supports RLHF preference ranking, DPO pair generation, red teaming, hallucination audits, reasoning step verification, multilingual evaluation, and multimodal annotation across text, image, video, audio, and 3D. Experts deploy directly into existing annotation tools such as Label Studio, Argilla, CVAT, V7, Encord, or custom environments, with OpenTrain acting as a talent layer rather than a data processor. Pricing is transparent: 15% for self-service, 20% for managed service, with no bundled markups or per-task software charges.