Big round · 8 October 2026

DeepSeek raises $15B Series B

By Millionrounds ResearchPublished 25 October 2026Updated 3 November 2026

DeepSeek, based in China, has raised $15B in a Series B, announced on 8 October 2026. 36 other investors joined. It is the 4th largest equity round we recorded in the twelve months to that date, and the largest Series B of 405. The median Series B over the same period was $50M, so this one is 300 times that. Its previous round on record was a round of $1.5B in July 2026, 3 months earlier.

Raised$15B10 sources reported it
StageSeries B1 earlier round on record
Investors36no lead named
Where CNChina

AI

How big is it?

Against every equity round we recorded in the twelve months to 8 October 2026. Ranks count companies, so the same raise reported twice is counted once.

#4equity round of the last twelve months
#1Series B of 405 in that time
#1round in China, of 30
This round$15B
Median Series B$50M

300 times the median Series B of the last twelve months.

Who invested

In the round

Funding history

  1. October 2026Series B$15B
  2. July 2026Round$1.5B

$17B raised across the 2 rounds we hold.

Reported by

  1. TechStartups6 October
  2. TechNode8 October
  3. borainvestir.b3.com.br22 October
  4. cafebiz.vn22 October
  5. ctinews.com22 October
  6. finance.ftvnews.com.tw22 October
  7. incrypted.com22 October
  8. renseignementeconomique.fr22 October
  9. roayahnews.com22 October
  10. tech-insider.org22 October

The round's figures come from these reports; each link opens the original.

Other big rounds that week

TypeSafe AI$870M Series AOxide$445M Series DVEIR$110M Series CMManus / Butterfly Effect$500M GrowthOratomic$475M Series BArena$200M Series B
The companyDeepSeek on Millionrounds→Weekly roundupWeek of 5 October→Monthly roundupOctober 2026→