Micro1 Rockets From $7 Million to $300 Million in Revenue in a Single Year

Micro1, a startup founded by 25-year-old Ali Ansari, grew from $7 million to $300 million in annualized revenue by April 2026, according to Forbes, by pivoting from AI recruiting to supplying vetted human experts for reinforcement learning from human feedback (RLHF) to AI labs. The company, which counts Microsoft as a disclosed customer and serves most of the Magnificent Seven, raised $35 million in a Series A led by 01 Advisors at a $500 million valuation in September 2025, and by December 2025 was fielding offers at a $2.5 billion valuation.

Micro1 started 2025 as a recruiting app pulling in $7 million a year. Eighteen months later it's doing more than $300 million in annualized revenue selling humans, not software, to the AI labs racing to fine-tune their models. You've probably never heard of Ali Ansari. But if you've used ChatGPT, Gemini, or Copilot recently, there's a decent chance a human trained by his company shaped how the model answered you. Ansari, 25, runs micro1, a startup that supplies AI labs with vetted doctors, lawyers, and senior engineers who spend their days grading, correcting, and arguing with chatbot outputs. Sacra estimates the company hit $300 million in annualized revenue by April 2026, up from $125 million at the end of 2025 and just $7 million when the year began, according to Forbes. That's one of the steepest revenue climbs in tech right now. It's real money, not just headlines, in a corner of the AI industry most readers have never thought about. The pivot happened almost by accident. Micro1 launched as an AI-powered recruiting tool, matching engineers with jobs. Then, according to Forbes, a major data-labeling firm hired micro1 to help it recruit graders for its own AI training work. "It was a mind-blowing project for us," Ansari told Forbes. "We should really focus on this market." Within eight months, the recruiting side had quietly become the entire business. Selling humans, not software Training a large language model doesn't stop once the base model is built. Labs still need people to rate answers, flag hallucinations, and write out the kind of expert reasoning a model should imitate: a process known as reinforcement learning from human feedback, or RLHF. Micro1 sells access to that labour, PhDs in medicine, physics, and law, plus senior software engineers, all vetted and put to work grading model outputs for AI companies. Microsoft is a disclosed customer, and Forbes reports the client list includes most of the so-called Magnificent Seven tech companies. Etched's AI chip valuation doubles to $21 billion in a single month https://startupfortune.com/etcheds-ai-chip-valuation-doubles-to-21-billion-in-a-single-month/ AI chip startup Etched raised $700 million at a $21 billion valuation, double what it was worth a month earlier, after Jane Street tested and bought its transformer-only Sohu inference hardware. The jump caps an eight-month run from a $5 billion valuation in December to $21 billion in August. - AI chip startup valuation doubles in one month https://startupfortune.com/etcheds-ai-chip-valuation-doubles-to-21-billion-in-a-single-month/ - Etched's transformer-only chip attracts Jane Street investment https://startupfortune.com/etcheds-ai-chip-valuation-doubles-to-21-billion-in-a-single-month/ Bigger fish, and a faster climb Micro1 isn't alone in spotting the opportunity. It isn't even the biggest player. Scale AI, backed by a $14.3 billion investment from Meta, built the category. Mercor, a rival that also grew out of AI-recruiting roots, reported $2 billion in annualized gross revenue as of June 2026, up from $760 million just four months earlier, according to reporting compiled by Value Add VC. Surge AI, bootstrapped with roughly 110 employees, reportedly reached a $1.4 billion run rate by late 2025. Next to those numbers, micro1's $300 million looks modest. But the growth rate is what's turning heads. Forbes reported in February 2026 that micro1's revenue was compounding at roughly 35% a month, a pace that, if it held even loosely, would put the company well past its April figure by now. That trajectory got investors moving fast. Micro1 raised $35 million in a Series A led by 01 Advisors in September 2025 at a $500 million valuation, and by December, Forbes reported the company was fielding takeover and investment offers at a $2.5 billion valuation, a five-fold jump in three months. Ansari's roughly 42% stake would be worth more than $1 billion if that valuation locks in. A market still finding its size The market underneath all of this is still young. Data annotation was worth somewhere between $2.7 billion and $5 billion in 2024, according to Oxford Economics and Scale AI research cited by Forbes, and the same research projects it will reach $19 billion by 2030. That's the opportunity micro1 is chasing, and it explains why a company almost nobody outside AI circles has heard of can already be worth billions. Frankly, the more interesting story here isn't the money. It's who's collecting it. The labs spending billions on compute still can't train a useful model without paying humans to sit in front of a screen and correct it, one answer at a time. Micro1's growth curve says something simple: the AI boom hasn't automated away the need for expert judgment. It has just created a new market for renting it out. 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