Overview
Y Combinator functions as an accelerator and early-stage investor with an expanded growth-stage presence in New York [1]. In Q2 2026, it ranked as the second most active investor in New York City startups, completing 8 deals while expanding its growth-stage focus in health tech, AI fintech, and enterprise software [2]. The organization's company directory identifies 220 AI startups headquartered in New York City that have received Y Combinator backing [3]. During July 2026, Y Combinator participated in New York AI funding rounds including Henry AI's $16.5 million seed round and dili's $15 million Series A [4].
Leadership & org chart
P20 alumniwhere they went →Investments
Warp
An AI-native employee management platform that automates payroll, compliance, and benefits for high-growth companies
PermitFlow
NYC company founded in 2021 by Francis Thumpasery and Samuel Lam, building construction permitting software that automates permit preparation and submission.
Nourish
Telehealth platform connecting chronic-condition patients with insurance-covered registered dietitians
F2
F2 is the AI platform for private markets investors.
Taktile
Decision platform letting risk and fraud teams at banks and fintechs build, test and run automated credit and onboarding decision flows with AI.
Stepful
New York company running an AI-powered training platform for allied healthcare jobs.
Avoca
An AI front office platform that provides call handling, scheduling, and customer communications for home services businesses
Ralo
Ralo is the first AI-native mortgage broker.
Aleph
NYC company founded in 2020 by Albert Gozzi, offering an AI-native financial planning and analysis platform that connects company data through Excel and Google Sheets and eliminates the bulk of manual reporting work for finance teams.
Dili
An AI-native compliance platform that automates prevailing wage monitoring and certified payroll review for infrastructure, construction, and energy projects
Henry
Automating Deal Decks for Commercial Real Estate Brokers
Prosper
Prosper builds AI phone agents for healthcare providers.
Cinder
A trust and safety platform that deploys AI agents to help companies detect and respond to digital abuse, fraud, and manipulation
Avallon
Williamsburg, Brooklyn company founded by Cornelius Schramm, Bryan Guin, Moritz Bartusch and Leander Peter, building AI agents that run insurance claims operations end to end, from intake calls and medical-report extraction to coordinating with employers and repair shops.
In the news
- The Weekly Notable Startup Funding Report: 9/28/26The notable startup funding rounds for the week ending 9/26/26 featuring funding details for Hydrosat, Numeral, Firecral, and nineteen other deals representing $2.5B in new funding that you need to know about.
AlleyWatch · Sep 27, 2026
- a16z is challenging Silicon Valley’s love for drop-outs by launching a schoolThis academy for promising high school grads is somewhere between a trade school, Y Combinator, and Peter Thiel's Fellowship Program.
TechCrunch Venture · Sep 22, 2026
- Y Combinator insurance tech alum Angle Health hits $2.7B valuationAngle Health has grown to 5,000 customers and become profitable by helping small businesses get "level-funded" health insurance.
- The 15 Largest US Funding Rounds of August 2026US startups secured massive funding rounds in September 2026, with the largest deal topping $1.1B. From autonomous trucking and nuclear energy to AI chips and live commerce, this month's biggest raises span 25 companies across industries reshaping the future. See which startups made the list.
- The fix for rogue AI agents could be more AIAs companies hand off longer and more complex tasks to AI agents, they are running into an oversight problem: Agents can act faster, longer, and at greater volume than humans can realistically review.
- The 9 buzziest startups from Y Combinator’s latest Demo Day, according to VCsFrom floating reactors to brain chips: VCs picked their favorite YC startups from the summer batch.
- Y Combinator’s Garry Tan wants US open-weight AI labs to ‘distill’ frontier models, tooTan wants smaller, American open-weight AI labs to use the same kind of training techniques on American frontier AI labs, giving the U.S. a more robust set of open-weight options that aren’t Chinese.
- The 7 Largest NYC Tech Startup Funding Rounds of August 2026Eight NYC startups. One $116M raise. August 2026's largest funding rounds span healthcare, AI, fintech, and robotics. Which companies made the list?
Alumni 37 went on to found or lead
Aidan DewarYC W21→Co-Founder & CEO at Nourish
Alex Atallah→CEO, Co-Founder at OpenRouter
Anand ChaturvediYC S23 Batch→Co-Founder, CEO at Dili
Andrew Zelaya→Chief Technology Officer at Gradia Health
Apurva Shrivastava→Founder at Avoca
Ariel Katz→CEO & Co-founder at H1- PArjun LalwaniSpring Batch (X25)→Co-Founder & CEO at Ralo
- PBrandon Abreu SmithF25→Co-Founder & CTO at Structured AI
Carl Madi→Co-Founder & CEO at Stepful- PDeepak ChhuganiYCG F21, Growth Program→Founder/CEO at Nuvocargo
Frank Sondors 🥓→Co-Founder & CEO at Salesforge
Helly Shah→Co-Founder & CTO at Ralo
NYC presence
- Ranked the second most active investor in NYC startups in Q2 2026 with 8 deals, with expanded growth-stage presence in health tech, AI fintech and enterprise software[2]
AI investing
- Participated in New York AI rounds in July 2026 including Henry AI's $16.5M seed and dili's $15M Series A[4]
Something wrong or missing? Send an update. Fixed within 24 hours.