Finance
Based in San Francisco, Micro1 provides human-created training and evaluation data to frontier AI labs, with customers including Microsoft, Amazon and robotics company 1X. Several customers and two xAI cofounders are reportedly participating in the latest round.
The company initially operated as an AI recruiting business generating around $7 million annually before shifting to AI training data. By December 2025, it had crossed $100 million in annualised revenue, with its gross annual run rate reportedly reaching $500 million by August 2026.
Micro1 is now expanding into reinforcement learning environments and robotics training data.
Why It Matters
The funding highlights rising demand for specialised, human-generated datasets as AI development expands into advanced reasoning, reinforcement learning and robotics.
