TrainPlex is an India-based AI training platform and data services partner serving AI companies globally. It provides human-led RLHF, annotation, evaluation, and data collection across more than 22 Indian languages, supported by a network of over 60,000 AI trainers. Its services include response ranking, Hindi and regional-language prompt evaluation, translation assessment, AI safety and red-teaming, and expert tasks in fields such as law, medicine, and finance. TrainPlex also collects voice, audio, image, and video data through consent-first, device-verified processes.

The company’s five-phase method covers scoping, collection, annotation, verification, and delivery. Tasks are completed by language-native and domain-verified trainers, then reviewed through four independent quality-assurance layers, combining automated checks with human review. TrainPlex reports accuracy above 95%, inter-annotator agreement above 0.80 kappa, and 98% on-time delivery. Clients receive data in formats suited to their pipelines, along with quality reports. The platform also enables people to earn by training AI in their languages, with certification opportunities that can unlock higher-paying tasks.