Anna Tong / Forbes:
Sources: AI training data startup Micro1 raised $100M+ at a $4B valuation, up from $500M in September 2025 — At the beginning of last year, Ali Ansari's company, Micro1, was a recruiting business with $7 million in ARR. It's now generating over $500 million in ARR and two xAI cofounders invested its latest round.
