What they do:
Units builds full-stack AI education infrastructure.
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HQ: San Francisco, CA, United States
Top AI Startups in San Francisco
This list has 1,355 startups and was last updated on Oct 15, 2026. 443 of them are hiring right now. Largest teams: Cruise, Athelas, and Checkr. Latest round: Litewave.AI raised $200K (Oct 7, 2026).
1,355 startupsPage 31 of 38
What they do:
Your new AI-powered math tutor.
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HQ: San Francisco, CA, United States
What they do:
ChatGPT's memory feature in an open, portable format
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HQ: San Francisco, CA, United States
What they do:
The tiny computer built for voice AI.
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HQ: San Francisco, CA, United States
What they do:
Make your product AI native by tomorrow.
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HQ: San Francisco, CA, United States
What they do:
Accelerated Physics Kernels for Computational Engineering
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HQ: San Francisco, CA, United States
What they do:
Research lab solving non-verifiable work
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HQ: San Francisco, CA, United States
What they do:
AI-native, hardware procurement marketplace
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HQ: San Francisco, CA, United States
What they do:
We automate the inventory process in insurance
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HQ: San Francisco, CA, United States
What they do:
AI Data Analyst for fast-growing teams
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HQ: San Francisco, CA, United States
What they do:
The browser for agentic development
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HQ: San Francisco, CA, United States
What they do:
AI agent that manages manufacturing operations over text
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HQ: San Francisco, CA, United States
What they do:
Camera-free AI glasses. Your AI, out in the world.
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HQ: San Francisco, CA, United States
What they do:
Robots to maintain and assemble data centers
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HQ: San Francisco, CA, United States
What they do:
The Git forge for the next hundred billion commits
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HQ: San Francisco, CA, United States
What they do:
AI-native sales agents that run marketplaces
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HQ: San Francisco, CA, United States
What they do:
High performance coding agents
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HQ: San Francisco, CA, United States
What they do:
Managed Agents API
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HQ: San Francisco, CA, United States
What they do:
The open source tool gateway
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HQ: San Francisco, CA, United States
What they do:
AI that finds and fixes OS-level vulnerabilities across device fleets
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HQ: San Francisco, CA, United States
What they do:
Combining open-source AI models for better answers at lower cost
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HQ: San Francisco, CA, United States
What they do:
Monetize your agent's traces.
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HQ: San Francisco, CA, United States
What they do:
Catch wrong LLM answers before your customers do
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HQ: San Francisco, CA, United States
What they do:
Android for drones
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HQ: San Francisco, CA, United States
What they do:
Helps build social skills through daily practice
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HQ: San Francisco, CA, United States
What they do:
Physical intelligence for every decision with Geospatial AI.
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HQ: San Francisco, CA, United States
What they do:
Always-on AI security engineer
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HQ: San Francisco, CA, United States
What they do:
AI platform accelerating therapies for rare & inflammatory diseases.
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HQ: San Francisco, CA, United States
YC S19Early stage
What they do:
Get up and running with large language models.
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HQ: San Francisco, CA, United States
YC W21Growth stage
What they do:
Online University for Tech Professionals
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HQ: San Francisco, CA, United States
What they do:
AI operating system for veterinary care
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HQ: San Francisco, CA, United States
YC W24Early stage
What they do:
Generate ads. Iterate till perfect.
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HQ: San Francisco, CA, United States
YC W24Early stage
What they do:
An AI agent for scientific research
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
Random labs is building long running autonomous coding agents.
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
Transform Images And Videos Into Immersive 3D With AI
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HQ: San Francisco, CA, United States
YC S24Early stage
What they do:
Reimagining how Machines Learn
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HQ: San Francisco, CA, United States
YC W25Early stage