Multiple platforms connect domain experts with AI labs for model training work

Ethos, Vetto AI, Mercor, and Micro1 operate as human-in-the-loop platforms that connect subject matter experts (professionals with specialized knowledge) with AI labs and enterprises needing high-quality training data and professional judgment.

These platforms enable remote, flexible work where domain experts — including scientists, engineers, doctors, analysts, and educators — contribute their knowledge to train frontier AI models.

Each platform frames expert participation as converting human expertise into training signals that improve model capability, rather than traditional job structures.