AI data startup Micro1 hits $500M gross run rate amid training data boom

Micro1, a four-year-old startup that supplies AI training data, has grown its gross annual run rate from $100 million to $500 million over the past eight months, according to a person familiar with the company, as reported by TechCrunch.

Like its peers, Micro1 hires domain experts such as doctors, lawyers, and scientists on a contract basis to produce training data, and retains roughly 60% to 70% of that figure, putting its net annual run rate between $150 million and $200 million.

The startup still trails rivals such as Mercor, which hit $2 billion in gross annualized revenue this summer, and Handshake, which reached $1 billion earlier this year, but its revenue growth shows there is more than enough demand to support multiple players in the AI training data market.

The boom is expected to continue, with some researchers hypothesizing that future AI spending on data could rival spending on compute. Micro1 is seeing its contract sizes grow at an accelerated pace and is increasingly generating synthetic data without human involvement, such as automated descriptions of video content.

Some of the data it generates can be sold to multiple customers, driving gross margins for this "off-the-shelf" data as high as 80% to 90% — a practice that has sparked controversy, with critics arguing that distributing such datasets to Chinese AI developers helps make their models as powerful as top U.S. models.

Founder Ali Ansari said last month on X that, unlike some competitors, Micro1 does not sell its data to Chinese model makers, calling it shameful to claim American AI dominance while selling millions of dollars worth of data to countries the U.S. is in adversarial competition with.

Like Mercor, Micro1 started as an AI recruiting startup before pivoting into data labeling. It raised its Series A at a $500 million valuation last September, and TechCrunch understands it may have recently raised another round at a significantly higher valuation. Micro1 did not respond to a request for comment.