Data Marketplaces & Intermediaries

Micro1 raised $35M at a $500M valuation as labs distance from Scale AI

Source: TechCrunch · Sep 12, 2025

Micro1 raised a $35 million Series A at a $500 million valuation, positioning itself as a direct competitor to Scale AI and Mercor in the AI-training-data and expert-evaluation market. The growth numbers since are the real story: annualized recurring revenue climbed from roughly $7 million to $50 million over the course of 2025, and by spring 2026 the company was reportedly running at around $300 million in annualized revenue — a trajectory that puts it firmly in the same hyper-growth tier as Mercor and Handshake, even though its funding round was comparatively modest.

A meaningful part of that growth is attributable to a specific market dynamic: several AI labs began actively diversifying their data-vendor relationships away from Scale AI after Meta took a $14 billion stake in that company. Labs that compete directly with Meta had clear reasons to avoid routing sensitive training-data work through a vendor now substantially owned by a rival — and that vendor diversification appears to have flowed disproportionately toward smaller, independent players like Micro1.

That dynamic is worth sitting with beyond Micro1's specific numbers. It's a live example of how a single ownership-structure event upstream (Meta/Scale AI) can reshuffle vendor relationships across an entire category almost overnight, and it underscores that AI labs treat vendor independence and neutrality as a real, actionable procurement criterion — not just a nice-to-have.

Key Points

• $35M Series A valued Micro1 at $500M, positioning it as a Scale AI/Mercor competitor
• ARR grew from roughly $7M to $50M over 2025
• Reached roughly $300M in annualized revenue by spring 2026
• Benefited from AI labs diversifying away from Scale AI following Meta's $14B stake in that company