RetroFix
Hiring
What they do:
Automate any workflow using plain english
Quick facts:
HQ: New York, NY, United States
Y Combinator Summer 2024 Startups
This list has 248 startups and was last updated on Oct 15, 2026. 102 of them are hiring right now. Biggest hubs: San Francisco (155), New York (28), and London (14). Largest teams: Corgi Insurance, Conveo, and Domu Technology Inc. Latest round: Bayesline raised $5.79M (May 15, 2026).
248 startupsPage 4 of 7
What they do:
An AI physics simulator for AI chip design
Quick facts:
HQ: San Francisco, CA, United States
Substrate
Hiring
What they do:
Artificial Intelligence for your medical billing team
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HQ: San Francisco, CA, United States
Mage Legal
Hiring
What they do:
Automatic AI Legal Diligence
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HQ: San Francisco, CA, United States
Mineflow
Hiring
What they do:
Mineflow predicts the shape and location of mineral deposits
Quick facts:
HQ: San Francisco, CA, United States
Zettascale Computing
Hiring
What they do:
Chips for frontier AI
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HQ: San Francisco, CA, United States
Cerulion
Hiring
What they do:
Open source operating system for robots
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HQ: San Francisco, CA, United States
Sonatoria
Hiring
What they do:
Helping Startups Grow Organically
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HQ: Los Angeles, CA, United States
What they do:
Collaborative workspace for patent litigators
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HQ: San Francisco, CA, United States
Rescript
Hiring
What they do:
AI for Legal & Public Policy Teams
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HQ: Washington, DC, United States
What they do:
AI Agents for Advisory & Financial Services.
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HQ: London, United Kingdom
What they do:
We make robots that move boxes in warehouses
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HQ: San Francisco, CA, United States
What they do:
AI workforce management for healthcare
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HQ: San Francisco, CA, United States
What they do:
Understand why your AI agent breaks. Iterate fast to fix it.
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HQ: London, United Kingdom
What they do:
The Agent Analytics Platform
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HQ: Los Angeles, CA, United States
What they do:
Gen AI molecular simulations that reproduce wetlab results
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HQ: San Francisco, CA, United States
What they do:
Automating police paperwork
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HQ: San Francisco, CA, United States
What they do:
Faster, more profitable background checks with AI
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HQ: Los Angeles, CA, United States
What they do:
Unified Hardware Control and Data Processing Software
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HQ: Denver, CO, United States
Spaceium Inc
Hiring
What they do:
In-Space Refueling
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What they do:
Automating airport baggage handling with robots.
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
The intelligent inbox that works for you
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What they do:
AI agents that handles complex billing and revenue
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HQ: San Francisco, CA, United States
What they do:
At-cost preventive health: Labs, Scans, Genetics, Supplements and Rx
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HQ: San Francisco, CA, United States
What they do:
Powerful quantitative forecasting models
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HQ: New York, NY, United States
Emergent
Hiring
What they do:
AI app builder that turns your ideas into monetizable software.
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HQ: San Francisco, CA, United States
YC S24Growth stage
What they do:
AI Report Generation for Engineering & Environmental Review
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HQ: London, United Kingdom
What they do:
The UI framework for AI agents and developers to build beautiful apps.
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HQ: Buenos Aires, Argentina
What they do:
Simulation software used by leading battery and automotive companies
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HQ: Remote
What they do:
Helping hospitals identify and prevent avoidable harm using AI
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HQ: San Francisco, CA, United States
What they do:
The most powerful sandboxes for AI Agents
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HQ: San Francisco, CA, United States
What they do:
Next-generation biocides for sustainable agriculture at scale
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HQ: New York, NY, United States
What they do:
Enzyme design models.
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HQ: San Francisco, CA, United States
What they do:
Building a nervous system for the atmosphere
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HQ: San Francisco, CA, United States
What they do:
We build floating solar data centers
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HQ: San Francisco, CA, United States
What they do:
Executable healthcare contracts
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HQ: San Francisco, CA, United States