YC Fall 2026 RFS
YC's Fall 2026 startup requests, translated into founder validation questions
Y Combinator's Fall 2026 RFS list points at AI moving into real-world systems: education, defense, infrastructure, field work, finance, identity, compliance, and developer tooling. This breakdown reframes each request into the question a founder should answer before building.
Based on YC's official Requests for Startups page.
13
Fall RFS ideas
13
Major themes
$5
IdeaCheck launch price
The pattern
This batch is less about AI chat and more about AI becoming operational infrastructure. The strongest startup opportunities are not generic wrappers. They are places where AI touches messy workflows, expensive mistakes, scarce labor, regulated processes, or physical-world data.
The Primer
by Andrew Miklas
YC wants founders building adaptive AI tutoring for young children, especially around reading, writing, math, reasoning, and long-term learning support.
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The Future of American Defense
by Daniel P. Driscoll, US Secretary of the Army
The Army is looking for low-cost interceptors and modular defense components that can move faster than traditional procurement.
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A Cloud for Small Software
by Pete Koomen
YC is asking for infrastructure that lets people safely create, run, share, and maintain tiny purpose-built software with agents.
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Multiplayer AI
by Aaron Epstein
YC wants AI products designed for teams instead of solo chat: shared context, collaborative workflows, and agents that work with groups.
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Compute at Sea
by Francois Chaubard
YC is interested in startups moving compute infrastructure offshore to address land, power, permitting, and cooling constraints.
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AI-Powered Consumer Products for 1 Billion People
by Raphael Schaad
YC wants ambitious consumer AI products that can become daily-use apps for huge audiences, not just utilities hidden inside existing software.
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AI for the Aging Population
by Max Kolysh
YC is looking for AI products that support older adults, family caregivers, monitoring, coordination, companionship, and independence.
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New Operating Systems for the Physical World
by Charlie Warren
YC wants software for deskless work that moves beyond old dispatch, forms, and checklists into AI-native operating systems for real-world teams.
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The Best Time to Build in Crypto
by Nemil Dalal
YC argues that the quieter crypto market is a good time to build durable products across stablecoins, agentic commerce, institutional tools, and privacy-preserving rails.
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Data for the Real World
by Austin Tindle and Diana Hu
YC wants startups collecting and structuring dense real-world data so AI can understand physical environments as well as it understands text and code.
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Proving You're Human
by Max Kolysh
YC is asking for new identity and verification layers that help people and institutions know when they are dealing with real humans instead of synthetic media or automated agents.
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AI-Native Compliance Infrastructure
by Daivik Goel
YC wants AI-first compliance infrastructure that consolidates monitoring, regulatory change, anomaly detection, reporting, and audit trails.
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Self-Maintaining APIs
by Harsha Gaddipati
YC is interested in APIs that communicate changes, keep documentation current, prevent integration breakage, and maintain themselves as products evolve.
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