OpenTrain AI

OpenTrain AI is a web-based talent marketplace and management platform for ML teams, data ops leaders, startups, enterprises, and research labs that need scalable AI training data and evaluation.

Key capabilities include:

• Vetted global talent network with 100,000+ AI trainers and data labelers across 70+ languages and 110+ countries for RLHF, LLM evaluation, red teaming, hallucination audits, computer vision, NLP, speech, and structured data labeling.
• Bring-your-own-tool workflow that lets hired specialists work directly inside existing labeling stacks or internal platforms (including integrations such as CVAT, Supervisely, Label Studio, and AWS SageMaker Ground Truth) while maintaining control over permissions and security policies.
• Self-serve hiring and collaboration with job posting, curated shortlists, direct messaging, work samples, and a project hub for instructions, training modules, and progress tracking.
• Payments and quality controls with hourly, per-task, or milestone/fixed-price payouts, secure global payments, and QA mechanisms such as reviewer assignment, consensus checks, gold-standard verification, plus KPI monitoring (accuracy, agreement, throughput).

Pricing: Paid, users set freelancer rates (hourly, per-task, or fixed price) with a flat platform fee; no public tier pricing listed.

Notable for supporting both self-service hiring and an optional managed service (recruiting, onboarding, staffing, QA, delivery), while keeping work in the customer’s own tooling and infrastructure to reduce tool lock-in and preserve data control.