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Snorkel AI

Redwood City, US · founded 2019 · ~300 employees · Software Publishers · Crunchbase rank #540 · snorkel.ai

Snorkel AI develops specialized training data, evaluation systems, benchmarks, and environments for AI models and agents. Its services include expert demonstrations, reasoning traces, preference labels, rubrics, programmatic checks, and custom data development for specialized domains. Snorkel AI also builds specialized AI agents and evaluates them using task-specific workflows and measurable criteria. Its solutions support frontier AI research, coding, scientific, legal, insurance, and other enterprise applications.

AI InfrastructureArtificial Intelligence (AI)Data Collection and LabelingEnterprise SoftwareMachine Learning
Also: ai data development · expert data · posttraining data · llm training data · preference data · reinforcement learning · rl environments · reinforcement learning from human feedback · supervised finetuning · ai benchmarks · ai evaluation · agent evaluation

Funding

1
Every round, secondary, debt facility or acquisition involving Snorkel AI that AI Lounge tracks, newest first. Latest: Series E on Sep 23, 2026.
Snorkel AI logo
Snorkel AIdetails →Series ESep 23
S32 (lead), Insight Partners (lead), Greylock · AI training data
$350M
val. $3.2B
8.5× EV/ARR

Timeline · 3

Oct 27, 2026
Signal
Valuation up to $3.2B · from $1.3B
Sep 23, 2026
Round
Series E · $350M at $3.2B · S32, Insight Partners
Sep 23, 2026
Deal
Snorkel AI raises $350M at $3.2B on demand for specialized training data · Crunchbase News

In the news

1
Snorkel AI raises $350M at $3.2B on demand for specialized training data2026-09-23
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