The training data provider raised more than $100M in a funding round that included contributions from co-founders of xAI and several frontier labs. Micro1 now supplies essential data to AI developers and corporate clients including Microsoft, Amazon and 1X. The company, founded by 25-year-old Ali Ansari, reached a $4B valuation in the investment round according to Forbes.

The startup transitioned to the AI data market at the start of 2025 after operating as a recruiting firm with roughly $7M in annual recurring revenue. Since pivoting, Micro1 has grown its annualized revenue to more than $500M. This expansion drove its valuation from $500M in September 2025 to the current $4B mark.