Investing Profile

Paul Buchheit

VCInvestorAngel
Managing Partner at Y Combinator
ycombinator.com/people/Mountain View, California
Photo of Paul Buchheit, Managing Partner at Y Combinator

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Y Combinator Managing Partner
$150K - $150K
$150K
178
CompanyStageDateRound SizeTotal Raised
Sim
Series ANov 2025$7M
$7.5M
Co-investors: Dalton Caldwell (Y Combinator), Ali Rowghani (Y Combinator), Chris Howard (Fuel Capital), Paul Graham, Kulveer Taggar
SiPhox Health
SeedJul 2023$10M
$33M
Co-investors: Srini Ananth (Intel Capital), Chris Sklarin (Alumni Ventures ), Evan Cheng, Vishal Rao, Bob Lee, Balaji Srinivasan
Perplexity
Series AMar 2023$26M
$1.3B
Co-investors: Cack Wilhelm (IVP), Sameer Gandhi (Accel), Auren Hoffman (Flex Capital), Eric Schmidt (Innovation Endeavors), Garry Tan (Y Combinator), Joshua Müller (DTCP), Jim Scheinman (Maven Ventures), Sara Thomas Deshpande (Maven Ventures), Nat Friedman (C2 Investment), Daniel Gross (C2 Investment), Naval Ravikant (The Hit Forge), Pieter Abbeel (AIX Ventures), Mattia Astori, Balaji Srinivasan, Tobias Lutke, Elad Gil, Stanley Druckenmiller, Amjad Masad, Yann LeCun, Dylan Field, Jeff Bezos, Peter Sonsini, Bob Muglia, Guillermo Rauch, Shane Neman
Character.ai
SeedJan 2023$80K
$150M
Co-investors: Sarah Wang (Andreessen Horowitz), Nat Friedman (C2 Investment), Elad Gil
Cityfurnish
Series ANov 2022$3M
Series AJun 2019$5M
$8.2M
Co-investors: Kenneth Ballenegger (Oyster Ventures), Steve Chen
Let’s Do This
Series BJun 2022$60M
SeedSep 2019$5M
$81M
Co-investors: Pete Flint (NFX), Nikhil Basu Trivedi (Footwork), Christian Leybold (Headline (formerly e.ventures)), Christopher North (L Catterton Growth), Serena Williams (Serena Ventures), Yuri Sagalov (10100), Ian Hogarth
dNovo Bio
SeedJan 2022$3M
$3M
Co-investors: Niki Pezeshki (Felicis Ventures), Joey Krug (Founders Fund), Nikhita Jaaswal (Soma Capital), Max Kolysh (Alloy Fund), Justin Mateen, Jean Pigozzi
Gotrade
SeedJun 2021$7M
$23M
Co-investors: Florian Reichert (Picus Capital), Remus Brett (LocalGlobe)