Y Combinator

Pre-seed and seed, all sectors, three-month batch in San Francisco

Apply Portfolio

Next deadline

5wNov 2

Official · W27

Next batch

Jan 2027

Official · in 3mo

Offer

$500,000

7% on a $125K post-money SAFE + $375K uncapped MFN SAFE

Batches a year

6,250 companies tracked

What it offers

Terms: YC invests $500,000: $125,000 on a post-money SAFE for 7% and $375,000 on an uncapped SAFE with an MFN provision. The investment is not contingent on milestones and YC charges no fees. Source
Where: San Francisco
Cadence: Four batches a year: winter, spring, summer and fall; each runs three months

Batches and deadlines

Y Combinator batches, upcoming first, with deadlines and company counts
Batch	Starts	Deadline	Demo day	Companies
Coming up
W27on-time deadline November 2 at 8pm PT; decisions by December 11; interviews in November and December; late applications still consideredDeadline Nov 2	Jan 2027in 3 months	Nov 2in 5 weeks	n/a	n/a
Earlier
F26	n/a	n/a	Dec 2	n/a
S26	n/a	n/a	Sep 10	n/a
X26	n/a	n/a	Jun 16	n/a
W26	n/a	n/a	Mar 24	n/a
F25dates not listed on an official page found	n/a	n/a	n/a	n/a
S25dates not listed on an official page found	n/a	n/a	n/a	n/a
X25dates not listed on an official page found	n/a	n/a	n/a	n/a

Y Combinator companies, rising first

Showing 40 of 6,250 companies

Company	Category	Status	Program
HyLightUnmanned airships for inspecting our critical assetsteam of 373 programsActiveOther	Other	Active	YC +2S23
Human ArchivePhysical AI data labteam of 100hiringActiveAI	AI	Active	YCW26
HypercubicAgentic AI for Mainframe Operations and Modernizationteam of 3on 3 fru.dev trackersActiveAI, Devtools	AI, Devtools	Active	YC +1F25
IcarusStratospheric birds for defenseteam of 50hiringActiveOther	Other	Active	YCF25
EfferenceAIteam of 122 programsActiveAI	AI	Active	YC +1F25
Perit.AIExpert-led data and RL platform for AI labsteam of 47ActiveAI, Data	AI, Data	Active	YCF26
UplaneReplace marketing agencies with AIteam of 26hiringActiveAI, Data	AI, Data	Active	YCF25
9 MothersCounter Drone Systems. $1.6m sales. We delivered for the DoW.team of 19hiringActiveOther	Other	Active	YCX26
BrickantaAgentic AI for Society Buildersteam of 25hiringActiveAI, Devtools	AI, Devtools	Active	YCF25
InstaAgentScale marketing campaigns across hundreds of personasteam of 102 programsActiveOther	Other	Active	YC +1X26
SazabiThe AI-native observability platform for fast-moving engineering teamsteam of 10on 3 fru.dev trackersActiveAI, Devtools	AI, Devtools	Active	YCX26
Bolna AIVoice AI to enable India's next billionteam of 21hiringActiveAI, Devtools	AI, Devtools	Active	YCF25
PocketTake Notes in the Real Worldteam of 15hiringActiveAI	AI	Active	YCW26
PloyPloy turns your website into your company's growth engine.team of 14hiringActiveOther	Other	Active	YCX26
ParameterSecurity builds trust. Strengthen both, all on one platform.team of 14hiringActiveAI	AI	Active	YCW26
SpottAI-native ATS/CRM for recruiting firmsteam of 50on 4 fru.dev trackersActiveAI	AI	Active	YCW25
OnyxOpen Source AI Chat32.2k starsteam of 20AcquiredAI, Data, Devtools	AI, Data, Devtools	Acquired	YCW24
ComplirVanta for physical productsteam of 13hiringActiveAI	AI	Active	YCX26
InferOperating system for insurance agenciesteam of 92 programsActiveOther	Other	Active	YC +1S21
Cosmic RoboticsAutonomous construction on Earth and beyondteam of 82 programsActiveOther	Other	Active	YC +1S26
Isengard Industries IncMass-produced AI strike systems and Counter-UASteam of 30ActiveAI	AI	Active	YCS26
JinbaAutomate enterprise workflows through chatteam of 11hiringActiveAI	AI	Active	YCW26
SembleThe all-in-one software for integrators.team of 14hiringActiveAI	AI	Active	YCF25
HubReal-world training data for frontier AI labs and robotics.team of 10hiringActiveAI, Data, Devtools	AI, Data, Devtools	Active	YCX26
Intelligence FactoryHuman Intelligence for Robotsteam of 10hiringActiveOther	Other	Active	YCX26
LanceAI Agents That Run Hotel Operations.team of 10hiringActiveAI	AI	Active	YCW26
MoritzGlobal AI-native law firm handling legal work with same-day turnaroundteam of 10hiringActiveAI	AI	Active	YCW26
RevionIntelligence for Automotive Operationsteam of 10hiringActiveAI	AI	Active	YCW26
General LegalElite AI law firm for high growth companiesteam of 25ActiveAI	AI	Active	YCW26
FlaiWe Bring Customers to Your Dealershipteam of 35hiringActiveAI	AI	Active	YCS25
Nox MetalsSupplying America's Industrial Baseteam of 35hiringActiveAI	AI	Active	YCS25
ArzanaThe autonomous ERP for every manufacturerteam of 9hiringActiveAI	AI	Active	YCX26
BioStack PlatformsReal world training envs for healthcare AI modelsteam of 9hiringActiveAI, Data	AI, Data	Active	YCX26
ClaraAI primary care doctorteam of 9hiringActiveAI	AI	Active	YCX26
MetisInfrastructure to build reliable agentsteam of 13acquiredAcquiredAI	AI	Acquired	YCS25
Structured AIThe AI drawing review platform for architects and engineers.team of 11hiringActiveAI	AI	Active	YCF25
eradNon-dilutive funding and payments in the Middle Eastteam of 52 programsActiveOther	Other	Active	YC +1S22
throxyVertical AI agents running B2B outbound on autopilot, with human SDRsteam of 55hiringActiveAI	AI	Active	YCX25
GETASAPAI-Native Fresh Produce Logisticsteam of 30hiringActiveAI	AI	Active	YCS25
Ignition BenefitsThe AI-Native Benefits Brokerageteam of 8hiringActiveAI	AI	Active	YCF26