micro1
AI-recruited expert workforce for data labeling and model training
AI
📍 San Francisco, CA
Founded 2022
Current Valuation
$500M
as of 2025-Q3
PRIVATE
micro1 is a data-labeling marketplace founded by 24-year-old Ali Ansari that uses an AI recruitment assistant to source and vet domain experts for RLHF, reasoning data, and robotics training datasets. The company pivoted from AI recruiting in 2025 and grew from an $80M valuation to a $500M Series A in eight months as Scale AI's ties with OpenAI and Google DeepMind unwound.
Company Profile
Growth
+1,686% YoY (valuation $80M → $500M in 8 months)
Last Round
Series A — $35M (Sep 2025) · Lead: 01 Advisors
Founders & Key People
Ali Ansari
Products
- AI-vetted expert network for data labeling
- RLHF and reasoning training data
- Robotics and enterprise AI data services
Competitors
Mercor · Surge AI · Scale AI · Handshake AI
AIData LabelingRLHFGig Marketplaces
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2025-Q3. Refreshed quarterly.