Micro1, an AI-training-data startup led by Ali Ansari, has achieved significant growth, reaching over $500M in annualized revenue.

This milestone comes shortly after securing over $100M in funding at a $4B valuation, which represents an eightfold increase from its $500M valuation just a year earlier in September 2025.

The company serves major customers including Microsoft, Amazon, robotics firm 1X, and frontier AI labs. Notably, two xAI cofounders also participated in this funding round, signaling strong backing and industry confidence.