OpenTrain AI

OpenTrain AI is a talent marketplace that connects companies needing AI training work with vetted domain experts and data labelers, enabling hiring for tasks like RLHF, LLM evaluation, red teaming, and data annotation. It offers access to more than 349,000 pre-vetted domain experts across more than 40 fields and 210 countries, AI-powered candidate matching against specific project requirements, and integration with more than 20 annotation platforms including Label Studio, CVAT, and Argilla without vendor lock-in. OpenTrain AI includes a built-in workspace with chat, documentation, and project management, global payment processing across 210-plus countries, and two service models: self-service hiring or fully managed recruitment and operations. It operates with live job postings and established integrations with major annotation tools. Pricing has no upfront software cost: self-service carries a 10% marketplace fee on talent payments plus $9.95 per new contract, while managed service is a flat 20% fee, with transparent pricing shown before commitment.