What they do:
Lakehouse-as-a-Service (LaaS)
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HQ: San Francisco, CA, United States
Y Combinator Fall 2026 Startups
This list has 139 startups and was last updated on Oct 15, 2026. 13 of them are hiring right now. Biggest hubs: San Francisco (96), New York (7), and Los Angeles (4). Largest teams: Perit.AI, Ignition Benefits, and Invertix.
139 startupsPage 3 of 4
What they do:
Agents running industrial enterprises from back office to shop floor
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HQ: San Francisco, CA, United States
What they do:
AI for the industries that power America.
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HQ: San Francisco, CA, United States
What they do:
Turning infrastructure demand into action
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HQ: San Francisco, CA, United States
What they do:
Intelligent Cloud for AI workloads
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HQ: San Francisco, CA, United States
What they do:
Give AI agents the right context at the right moment
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HQ: San Francisco, CA, United States
What they do:
Automate on-call at agent-scale.
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HQ: San Francisco, CA, United States
What they do:
Building in-house, frontier AI labs for companies
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HQ: San Francisco, CA, United States
What they do:
The AI desktop.
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HQ: San Francisco, CA, United States
What they do:
Fast inference for voice
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HQ: San Francisco, CA, United States
What they do:
The AI coding agent for C and C++
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HQ: San Francisco, CA, United States
What they do:
The infrastructure to run coding agents for your team
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HQ: San Francisco, CA, United States
What they do:
Quick-turn, purpose-built motors & actuators for all
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HQ: Los Angeles, CA, United States
What they do:
A consumer brain-computer interface you can map to anything.
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HQ: San Francisco, CA, United States
What they do:
AI agents that run law firm operations.
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HQ: San Francisco, CA, United States
What they do:
The generalist robot deployment company.
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HQ: San Francisco, CA, United States
What they do:
Precision navigation for UAVs operating without GPS.
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HQ: San Francisco, CA, United States
What they do:
Continuously improving evals for agentic commerce
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What they do:
On Demand CNC Prototyping
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HQ: San Francisco, CA, United States
What they do:
The people data company for the agent era
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HQ: San Francisco, CA, United States
What they do:
API simulators for testing and training agents locally
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HQ: San Francisco, CA, United States
What they do:
A foundation model for engineering physics
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HQ: San Francisco, CA, United States
What they do:
Turn any website into an MCP for your agents, in minutes
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HQ: San Francisco, CA, United States
What they do:
AI Claims Investigator for Insurance
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HQ: New York, NY, United States
What they do:
Open source alternative to Semrush and Ahrefs
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HQ: Boston, MA, United States
What they do:
Reconero helps police officers automate their workflows with AI
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HQ: San Francisco, CA, United States
What they do:
Infra to make AI safe enough to practice medicine
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HQ: San Francisco, CA, United States
What they do:
voice-first hardware interface for human-agent interaction
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HQ: San Francisco, CA, United States
What they do:
Turns EHR data into study-ready datasets for hospital research teams
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HQ: San Francisco, CA, United States
What they do:
The AI decision engine for factories, warehouses and fleets
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HQ: San Francisco, CA, United States
What they do:
Accelerating scaled plastics with additive technologies
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HQ: El Segundo, CA, United States
What they do:
Agent swarms that make long-running tasks exponentially faster
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HQ: London, United Kingdom
What they do:
Durable state for AI agents
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HQ: New York, NY, United States
What they do:
Cursor for GTM
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HQ: San Francisco, CA, United States
What they do:
Your health plan should get better year-round. Not just once a year.
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HQ: San Francisco, CA, United States
What they do:
Verify that the expected person is in control before key actions.
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