Confident AI
Hiring
What they do:
The LLM Eval and Observability Platform for AI Quality
Quick facts:
HQ: San Francisco, CA, United States
Y Combinator Winter 2025 Startups
This list has 166 startups and was last updated on Oct 15, 2026. 68 of them are hiring right now. Biggest hubs: San Francisco (103), New York (19), and London (6). Largest teams: Spott, AfterQuery, and Mundo AI. Latest round: Exin Therapeutics raised $2.16M (Feb 10, 2026).
166 startupsPage 2 of 5
Browser Use
Hiring
What they do:
Agents that use the browser.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Building the open source smart glasses operating system.
Quick facts:
HQ: San Francisco, CA, United States
Maritime Fusion
Hiring
What they do:
Fusion reactors for ships
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI compliance co-pilot for regulated financial businesses
Quick facts:
HQ: London, United Kingdom
Osmosis
Hiring
What they do:
Reinforcement Learning (RL) for AI Agents
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HQ: San Francisco, CA, United States
PAX Markets
Hiring
What they do:
Co-located trading facility and matching engine on one chip.
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HQ: San Francisco, CA, United States
Asteroid
Hiring
What they do:
The integration layer for healthcare: EHRs, payer portals & more
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HQ: San Francisco, CA, United States
Trata
Hiring
What they do:
AI-powered research desk for hedge funds
Quick facts:
HQ: New York, NY, United States
Solidroad
Hiring
What they do:
AI agents for CX teams, starting with training and QA.
Quick facts:
HQ: San Francisco, CA, United States
TrainLoop
Hiring
What they do:
Reasoning Fine-Tuning
Quick facts:
HQ: San Francisco, CA, United States
Flowtel
Hiring
What they do:
The AI Voice agents for hotels
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HQ: San Francisco, CA, United States
Steinmetz
Hiring
What they do:
Next-Generation Power Electronics
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HQ: San Francisco, CA, United States
Promptless
Hiring
What they do:
An AI teammate that automatically updates your customer-facing docs
Quick facts:
HQ: San Francisco, CA, United States
Mosaic
Hiring
What they do:
Frontier Video Agents
Quick facts:
HQ: San Francisco, CA, United States
Liquid Compute
Hiring
What they do:
Pending CFTC regulation to be the first cash and physically settled…
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HQ: New York, NY, United States
Onlook
Hiring
What they do:
The Developer tool for Designers
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HQ: San Francisco, CA, United States
Edexia
Hiring
What they do:
AI Teacher Assistant for Grading Essays
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SubImage
Hiring
What they do:
The Open-Core Security Graph
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Manufacturing the most powerful chips, 15x faster
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HQ: San Francisco, CA, United States
Adam
Hiring
What they do:
AI Powered CAD
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HQ: San Francisco, CA, United States
Infinite
Hiring
What they do:
Global B2B Stablecoin Processor
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HQ: San Francisco, CA, United States
Peppr AI
Hiring
What they do:
In-call AI teleprompter that helps reps close enterprise deals
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HQ: San Francisco, CA, United States
Misprint
Hiring
What they do:
Misprint is building Robinhood for Pokemon cards
Quick facts:
HQ: New York, NY, United States
Artifact
Hiring
What they do:
An Collaborative, AI-native IDE for Hardware Engineers
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HQ: Los Angeles, CA, United States
What they do:
Stablecoin API for global payments
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HQ: San Francisco, CA, United States
Revise Robotics
Hiring
What they do:
Automating refurbishment of $1T in consumer electronics
Quick facts:
HQ: New York, NY, United States
a0.dev
Hiring
What they do:
We make mobile apps using AI.
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HQ: San Francisco, CA, United States
10x
Hiring
What they do:
AI Sales Teams for Dental Practices
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HQ: San Francisco, CA, United States
Lucid
Hiring
What they do:
interactive video models
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HQ: San Francisco, CA, United States
Candor
Hiring
What they do:
Protect your data and stop insider risk
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HQ: San Francisco, CA, United States
Mesh
Hiring
What they do:
Eliminating accrual spreadsheets for faster month-end
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HQ: San Francisco, CA, United States
Archon
Hiring
What they do:
We help software companies sell to government.
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HQ: San Francisco, CA, United States
Rebolt
Hiring
What they do:
AI-Powered Company OS
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HQ: San Francisco, CA, United States
Dalus
Hiring
What they do:
AI-Powered Hardware System Design Software
Quick facts:
HQ: San Francisco, CA, United States
Enhanced Radar
Hiring
What they do:
AI for air traffic control
Quick facts:
HQ: San Francisco, CA, United States