Big round · 9 October 2026

TypeSafe AI raises $870M Series A led by Andreessen Horowitz

By Millionrounds ResearchPublished 13 October 2026

TypeSafe AI, based in United States, has raised $870M in a Series A led by Andreessen Horowitz, announced on 9 October 2026. 2 other investors joined. It is the 62nd largest equity round we recorded in the twelve months to that date, and the 4th largest Series A of 746. The median Series A over the same period was $20M, so this one is 44 times that. Its previous round on record was a seed round of $40M in September 2026, 1 month earlier.

Raised$870M4 sources reported it
StageSeries A1 earlier round on record
Investors31 named as lead
Where USUnited States

AIRobotics

How big is it?

Against every equity round we recorded in the twelve months to 9 October 2026. Ranks count companies, so the same raise reported twice is counted once.

#62equity round of the last twelve months
#4Series A of 746 in that time
#39round in United States, of 1,164
This round$870M
Median Series A$20M

44 times the median Series A of the last twelve months.

Who invested

Also in the round

Funding history

  1. October 2026Series A$870M
  2. September 2026Seed$40M

$910M raised across the 2 rounds we hold.

Reported by

  1. Firms' own news pages
  2. Silicon Angle9 October
  3. AI Insider12 October
  4. The SaaS News13 October

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

Other big rounds that week

Oxide$445M Series DVEIR$110M Series CDeepSeek$15B Series BMManus / Butterfly Effect$500M GrowthOratomic$475M Series BArena$200M Series B
The companyTypeSafe AI on Millionrounds→Weekly roundupWeek of 5 October→Monthly roundupOctober 2026→