Funding round
Periodic Labs Seed
Periodic Labs, which works in AI scientist development services in United States, raised $300M in a Seed round announced on 30 Sep 2025, led by Andreessen Horowitz. 5 firms took part. It is Periodic Labs' second venture round on record; the one before was a Growth in Aug 2025.
$300M
Amount raised
Not disclosed
Post-money valuation
5
Investors
1 lead
Valuation
What this round says about the price
Periodic Labs did not disclose a valuation in this round; its last disclosed one was $1.00B at the Growth (Aug 2025). It came 1 month after Periodic Labs' Growth. It is 60% of the $500M Periodic Labs has raised in the venture rounds on record. No later venture round is on record for Periodic Labs.
Periodic Labs' funding rounds
Periodic Labs has 2 venture rounds on record. This one is highlighted.
- Growth 11 Aug 2025, led by Andreessen Horowitz $200M$1.00B post-money
- Seed this round 30 Sep 2025, led by Andreessen Horowitz $300M
Investors
Who put money in
Andreessen Horowitz led the round with 4 other firms.
Lead investor
- Andreessen Horowitz backs 722 venture-backed companies new investor
Also in the round
- Nvidia new investor
- Accel backs 581 venture-backed companies new investor
- DST Global backs 179 venture-backed companies new investor
- Felicis backs 237 venture-backed companies new investor
Comparable rounds
How it compares
2,342 Seed rounds in Tech Companies within a year either side disclosed an amount; the median was $4.0M, and this round was 75 times the median. The closest in time, other companies' Seed rounds in Tech Companies:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Tech Companies | 17 Sep 2025 | $100M | not disclosed | Mayfield and Maverick Silicon |
| Tech Companies | 30 Sep 2025 | $88M | not disclosed | Notable Capital and Lightspeed Venture Partners |
| Tech Companies | 8 Sep 2025 | $35M | $12.50B | JetDebt Finance |
| Tech Companies | 23 Sep 2025 | $35M | not disclosed | Mayfield and Nexus Venture Partners |
| Tech Companies | 2 Sep 2025 | $30M | not disclosed | Base10 Partners |
| Tech Companies | 30 Sep 2025 | $25M | not disclosed | Kleiner Perkins |
| Tech Companies | 28 Sep 2025 | $21M | not disclosed | Lightspeed Venture Partners |
| Tech Companies | 17 Sep 2025 | $21M | not disclosed | Shine Capital and Lgvp Alumni Ventures |
Sources
Where this comes from
Reported by 3 sources.
Questions
Frequently asked
How much did Periodic Labs raise in its Seed round?
Periodic Labs raised $300M in its Seed round, announced in Sep 2025.
Who led Periodic Labs' Seed round?
Andreessen Horowitz led it, with Nvidia, Accel, DST Global and Felicis.
What was Periodic Labs' valuation at the Seed round?
It was not disclosed; its last disclosed one was $1.00B at the Growth (Aug 2025).
How does it compare with other Seed rounds in Tech Companies?
2,342 Seed rounds in Tech Companies within a year either side disclosed an amount; the median was $4.0M, and this round was 75 times the median.