Snorkel AI

This page may contain stale information. Last updated: 2026-09-23

Overview

Snorkel AI is a frontier AI data lab providing completed training datasets and reinforcement learning (RL) environments to AI labs and enterprises. Founded from Stanford AI research (CEO Alex Ratner), the company shifted from data-labeling software to a data-as-a-service model combining synthetic generation with subject-matter experts.

Recent Developments

• 2026-09-22: Raised $350MSeriesE\ast \ast at\ast \ast$3.5B valuation — co-led by insight-partners and S32; nearly tripled from $1.3BSeriesD(May2025).ARRrunrate\ast \ast$375M** (18× YoY); CEO expects profitability in 2026 (2026-09-22-snorkel-ai-3-5b-valuation, 2026-09-22-snorkel-ai-reuters-exclusive)

ARR figures are company-reported, not audited. Reuters cited ~ $350Mrunrateinexclusive;TechCrunch/PRNewswirecite$375M — treat as self-reported range.

Business Model

• Sells RL environments and complete datasets (not human-labor marketplace gross revenue)
• Expert payments accounted in COGS rather than headline ARR
• Competes in “AI data lab” segment with Mercor ($2BgrossARR),Handshake($1B), Micro1 ($500M) — those marketplace models pay 60–70% to specialists

Related

• ai-training-data
• synthetic-data
• ai-infrastructure
• venture-capital
• reinforcement-learning

Sources

• 2026-09-22-snorkel-ai-3-5b-valuation
• 2026-09-22-snorkel-ai-prnewswire-official
• 2026-09-22-snorkel-ai-reuters-exclusive
• 2026-09-22-snorkel-ai-insight-partners-blog