Snorkel AI funding rounds & valuation history
Snorkel AI, the Redwood City “frontier AI data lab” that builds expert-labelled training and evaluation data for AI labs and enterprises. Funding from the Series C (Aug 2021) to the Series E (Sep 2026), sourced to Snorkel AI and TechCrunch.
Round history
Newest first. Dashed badges and striped rows are not closed transactions. “—” means the source does not disclose the figure or it cannot be computed on the same basis; see the note in each row.
| Date | Status | Round | Amount | Lead / buyer | Valuation | Val. ÷ run-rate | Source |
|---|---|---|---|---|---|---|---|
Closed round |
Series EExisting investor Addition participated significantly. |
$350M |
Insight PartnersWith: S32 |
$3.5BStated by Snorkel AI2.69× vs prior closed |
—Not disclosedNo run-rate stated in the announcement |
||
Closed round |
Series D |
$100M |
Addition |
$1.3BStated by Snorkel AI1.30× vs prior closed |
—Not disclosedNo run-rate stated in the announcement |
||
Closed round |
Series CExisting investors included Greylock, GV and Lightspeed. |
$85M |
BlackRockWith: Addition |
$1BStated by Snorkel AI |
—Not disclosedNo run-rate stated in the announcement |
Valuation at each closed round
Valuations as stated or reported at each closed round with a disclosed figure; talks, tenders and filings are not plotted.
Sources: Snorkel AI, TechCrunch. US$ billions, linear scale.
Timeline
Each round and share sale, oldest first.
- 9 Aug 2021 · Closed
Series C: $85M at $1B led by BlackRock.
- 29 May 2025 · Closed
Series D: $100M at $1.3B led by Addition.
- 22 Sep 2026 · Closed
Series E: $350M at $3.5B led by Insight Partners.
Cite this dataset
Free to quote with a link back. Copy this citation:
Snorkel AI Funding Rounds & Valuation History. Private Valuation & Funding Round Tracker, GrowthNavigateFunding.net, updated 14 Nov 2026. https://growthnavigatefunding.net/funding/snorkel-ai/
Download the data
The same 3 rows as the table: numeric US$ columns, empty cells where a figure is not disclosed, and a source URL for every row.
- File
snorkel-ai-rounds.csv(UTF-8, comma-separated)- Stable URL
https://growthnavigatefunding.net/wp-content/uploads/2026/11/snorkel-ai-rounds.csv- Columns
id,date,date_precision,status,transaction_type,round,amount_usd_low,amount_usd_high,lead_or_buyer,co_leads,valuation_usd_low,valuation_usd_high,valuation_basis,valuation_to_run_rate_multiple,multiple_bound,multiple_basis,step_up_vs_prior_closed,price_per_share_usd_low,price_per_share_usd_high,shares,source,source_url,other_source_urls,notes,last_updated- Updated
- (IST)
Methodology & status definitions
How each row is labelled and calculated.
Closed round
A primary round announced by the company or confirmed in the press, bringing new money to the company.
Valuation ÷ run-rate
Post-money valuation ÷ the run-rate the company stated in that announcement (GNF calc.). Where the run-rate is “crossed” or “over” a figure, the multiple is shown as “under X×”. No row qualifies here unless shown, so no multiple is invented.
What is not a separate row
Seed, Series A and Series B rounds, and secondary sales.
Updates & corrections
This page stays at one address and is updated in place; the “Last updated” date above drives the citation and the dataset metadata. Corrections: hello@growthnavigatefunding.net. Informational only; not investment advice.
Changelog
- : Dataset first compiled (AI-50 batch, not yet published).
Sources
- Snorkel AI: Snorkel AI Raises $350M to Scale the Data Factory for Frontier AI, 22 Sep 2026
- TechCrunch: Snorkel AI triples valuation to $3.5B as demand for AI training data booms, 22 Sep 2026
- Snorkel AI: Snorkel AI Raises $100 Million To Build Better Evaluators For AI Models, 29 May 2025
- Snorkel AI: Snorkel AI Raises $85m Series C at $1b Valuation for Data-Centric AI, 9 Aug 2021