Funding round
Snorkel AI Series D
Snorkel AI, which works in research-grade dataset development in Redwood City, raised $100M in a Series D round announced on 29 May 2025, led by Addition, at a $1.30B post-money valuation. 6 firms took part, 2 of them already investors. It is Snorkel AI's fourth venture round on record; the one before was a Series C in Aug 2021.
$100M
Amount raised
$1.30B
Post-money valuation
$1.20B pre-money
6
Investors
1 lead
1.3x
Step-up from the Series C
$1.00B in Aug 2021
7.7%
Stake sold
new money over the post-money
Valuation
What this round says about the price
This round priced Snorkel AI at $1.30B after the new money, 1.3 times the $1.00B of its Series C (Aug 2021). The $100M bought investors about 7.7% of the company. It came 45 months after Snorkel AI's Series C. It is 17% of the $573M Snorkel AI has raised in the venture rounds on record. Snorkel AI raised again 16 months later: a Series E round of $350M in Sep 2026, at $3.50B post-money.
Snorkel AI's funding rounds
Snorkel AI has 5 venture rounds on record and 1 other deal. This one is highlighted.
- Seed 1 Jan 2019 $3.0M
- Other not a venture round 14 Jul 2020, led by Greylock Partners $15M
- Series B 7 Apr 2021, led by Lightspeed Venture Partners $35M
- Series C 9 Aug 2021, led by Addition and BlackRock $85M$1.00B post-money
- Series D this round 29 May 2025, led by Addition $100M$1.30B post-money
- Series E 22 Sep 2026, led by Insight Partners and S32 $350M$3.50B post-money
Investors
Who put money in
Addition led the round with 5 other firms. Greylock Partners and Lightspeed Venture Partners had backed Snorkel AI before.
Lead investor
- Addition new investor
Also in the round
- backs 48 venture-backed companies new investor
- QBE Ventures new investor
- Greylock Partners backs 190 venture-backed companies existing investor
- Lightspeed Venture Partners backs 454 venture-backed companies existing investor
- BNY new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to hiring, product development, sales and marketing, scaling operations and working capital.
- Hiring
- Product development
- Sales and marketing
- Scaling operations
- Working capital
Comparable rounds
How it compares
6 Series D rounds in Software Development Services within a year either side disclosed an amount; the median was $120M, and this round was 83% of the median. The closest in time, other companies' Series D rounds in Software Development Services:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| AI21 Software Development Services | 10 May 2025 | $300M | not disclosed | not named |
| Software Development Services | 26 Jun 2025 | $60M | not disclosed | Align Private Capital |
| Baseten Software Development Services | 5 Sep 2025 | $150M | $2.15B | BOND |
| Software Development Services | 15 Dec 2025 | $86M | $750M | Georgian and Hedosophia |
| Decagon Software Development Services | 27 Jan 2026 | $250M | $4.50B | Coatue and Index Ventures |
| Software Development Services | 17 Sep 2024 | $90M | not disclosed | not named |
Sources
Where this comes from
Reported by 3 sources.
Questions
Frequently asked
How much did Snorkel AI raise in its Series D round?
Snorkel AI raised $100M in its Series D round, announced in May 2025.
Who led Snorkel AI's Series D round?
Addition led it, with Prosperity7 Ventures, QBE Ventures, Greylock Partners, Lightspeed Venture Partners and BNY.
What was Snorkel AI's valuation at the Series D round?
$1.30B post-money ($1.20B pre-money).
How does it compare with other Series D rounds in Software Development Services?
6 Series D rounds in Software Development Services within a year either side disclosed an amount; the median was $120M, and this round was 83% of the median.
Did Snorkel AI raise again after this round?
Yes: a Series E round in Sep 2026 of $350M at $3.50B post-money.