What they do:
QA agents that write tests 10x faster with zero maintenance
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HQ: San Francisco, CA, United States
Y Combinator Winter 2024 Startups
This list has 248 startups and was last updated on Oct 15, 2026. 90 of them are hiring right now. Biggest hubs: San Francisco (149), New York (42), and London (7). Largest teams: Legora, Model ML, and Astro Mechanica. Latest round: Legora raised $442M (Mar 24, 2026).
248 startupsPage 5 of 7
What they do:
Intelligent Medical Record Reviews
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HQ: New York, NY, United States
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The video-first food delivery app. Imagine TikTok meets DoorDash.
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HQ: New York, NY, United States
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Invoicing that pays you even if your buyer doesn’t
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HQ: San Francisco, CA, United States
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AI Fitness Coach
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HQ: San Francisco, CA, United States
What they do:
People search powered by AI
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HQ: San Francisco, CA, United States
What they do:
AI Website platform that grows revenue automatically
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HQ: San Francisco, CA, United States
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High precision AI weather
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HQ: Ann Arbor, MI, United States
What they do:
Optimize performance on GPUs - 10x faster
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HQ: New York, NY, United States
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AI Copilot for Property Managers and Landlords
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HQ: Austin, TX, United States
What they do:
Foundation Model for Chemical Manufacturing
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HQ: San Francisco, CA, United States
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Attunement turns fragmented behavioral health records into structured…
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HQ: San Francisco, CA, United States
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PandasAI is an open-source conversational data analysis platform with…
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What they do:
AI-Powered Engineering Productivity
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HQ: San Francisco, CA, United States
What they do:
Conversational AI surveys with intelligent follow-up questions
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HQ: New York, NY, United States
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Risotto auto-solves IT support requests using AI
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HQ: San Francisco, CA, United States
What they do:
Unlimited inference at $5 per stream
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HQ: San Francisco, CA, United States
What they do:
Batteries and solar for $0 upfront to help businesses save money
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HQ: San Francisco, CA, United States
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An AI-powered test and debug platform for chip developers
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HQ: New York, NY, United States
What they do:
M&A due diligence platform powered by AI
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What they do:
Deliver complete data analysis from a single question
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HQ: San Francisco, CA, United States
What they do:
the AI coding app for thinking.
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HQ: San Francisco, CA, United States
What they do:
AI relationship app that keeps couples together
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HQ: San Francisco, CA, United States
What they do:
Voice Agents for Healthcare Operations
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HQ: San Francisco, CA, United States
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the first all-in-one payroll and HR software for French SMBs
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What they do:
AI tooling
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What they do:
AI for Pharma Intelligence
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HQ: New York, NY, United States
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Mobile app helping people better manage chronic health conditions
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HQ: San Francisco, CA, United States
What they do:
AI system design tools for dev teams
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HQ: New York, NY, United States
What they do:
Automate bug resolution
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HQ: New York, NY, United States
What they do:
Helping Companies Deploy Email Agents in High Trust Domains
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HQ: San Francisco, CA, United States
What they do:
AI and Embeddings.
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HQ: San Francisco, CA, United States
What they do:
Payment infrastructure for machines
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HQ: New York, NY, United States
What they do:
"If-then" conditional logic for protein drugs
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HQ: Boston, MA, United States
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Modern patient engagement and remote therapeutic monitoring platform
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HQ: San Francisco, CA, United States
What they do:
AI Agent for DevOps Workflow Automation
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HQ: New York, NY, United States