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Startups14,448Programs29

14,448 startups · 29 programs

FullSeam

Active · AI agents for corporate accounting teams

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 3Team size · YC's directory+3.1

A sum of public facts, not a judgement and not investment advice.

Competitors

AIProcIndexShared: account payable, account receivable, accountingYC S25San FranciscoStartup →AIAlderShared: account receivable, accountingYC F25San FranciscoStartup →OtherBlixoShared: account receivableYC S21MiamiStartup →AIBotonShared: accounting software, agentYC S22Panama CityStartup →AIModernbancShared: accounting softwareYC W20LondonStartup →
Companies closest to FullSeam
Company
ProcIndexShared: account payable, account receivable, accountingYC S25ActiveAI
AlderShared: account receivable, accountingYC F25ActiveAI
BlixoShared: account receivableYC S21ActiveOther
BotonShared: accounting software, agentYC S22ActiveAI
ModernbancShared: accounting softwareYC W20ActiveAI

Adjacent

OtherPlate IQShared: replace manual, account payable, accounting softwareYC S15LondonStartup →AITabulaShared: accounting softwareYC S24BerlinStartup →OtherDillShared: account receivableYC W23San FranciscoStartup →AIFazeshiftShared: account receivable, agent, manualYC S24San FranciscoStartup →OtherInactivePaidShared: account receivableYC S14San FranciscoStartup →
Companies next to FullSeam
Company
Plate IQShared: replace manual, account payable, accounting softwareYC S15 +1ActiveOther
TabulaShared: accounting softwareYC S24ActiveAI
DillShared: account receivableYC W23ActiveOther
FazeshiftShared: account receivable, agent, manualYC S24ActiveAI
PaidShared: account receivableYC S14InactiveOther

Also from W26 in AI

All of W26
AI/dev/fast/dev/fast is the AI-native code forgeYC W26San FranciscoStartup →AI10x ScienceThe AI-native platform for next-generation protein characterization.YC W26San FranciscoStartup →AI21stUI building blocks for the agentic internetYC W26San FranciscoStartup →AIAemonThe Forward-Deployed AI Research EngineerYC W26San FranciscoStartup →AIAgentic FabriqThe control plane for AI agents.YC W26San FranciscoStartup →AIAlt-XBuilding the best venue for private markets exposure.YC W26Los AngelesStartup →
Company
/dev/fast/dev/fast is the AI-native code forgeteam of 4ActiveAI, Devtools
10x ScienceThe AI-native platform for next-generation protein characterization.team of 5hiringActiveAI
21stUI building blocks for the agentic internetteam of 3ActiveAI, Devtools
AemonThe Forward-Deployed AI Research Engineerteam of 3hiringActiveAI, Devtools
Agentic FabriqThe control plane for AI agents.team of 2ActiveAI
Alt-XBuilding the best venue for private markets exposure.team of 2ActiveAI, Data

Founders

  • Thomas DowlingFounder/CEO
  • Aaron CoppaFounder/CTO
  • Geoff SegalFounder/President

About FullSeam

FullSeam builds agents for corporate accounting. Our agents replace manual accounting tasks that typically happen outside of our customers’ accounting software, like accounts payable, accounts receivable, and reconciliation.

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
AI
Team size
3
Founded
2026
Checked
13h ago

FullSeam in W26: 199 companies, 81% AI

LinkedIn

FullSeam: questions

Which YC batch was FullSeam in?

FullSeam was in Y Combinator's Winter 2026 batch (W26).

Is FullSeam still active?

Y Combinator lists FullSeam as active.

Who founded FullSeam?

FullSeam's founders, as listed on its YC page: Thomas Dowling (Founder/CEO), Aaron Coppa (Founder/CTO), Geoff Segal (Founder/President).