What they do:
We make it simple for call centers to automate quality assurance.
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HQ: San Francisco, CA, United States
Top Startups in California
This list has 3,698 startups and was last updated on Oct 15, 2026. 827 of them are hiring right now. Biggest hubs: San Francisco (3,173), Los Angeles (197), and San Diego (39). Largest teams: DoorDash, Stripe, and Airbnb. Latest round: Renue Life Sciences raised $250K (Oct 14, 2026).
3,698 startupsPage 39 of 103
What they do:
AI agents rewriting & optimising your internal documentation for LLMs
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HQ: San Francisco, CA, United States
What they do:
Get your brand discovered and recommended by ChatGPT
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HQ: San Francisco, CA, United States
What they do:
A direct to consumer marketplace and influencer network for brands
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HQ: Los Angeles, CA, United States
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Oral drugs to halt neurodegeneration
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HQ: San Diego, CA, United States
What they do:
Make diesel semi trucks hybrid-electric
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HQ: San Francisco, CA, United States
What they do:
Internal developer platform for Terraform, OpenTofu and Helm
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HQ: Los Angeles, CA, United States
What they do:
Building the definitive all-in-one on-device AI productivity tool
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HQ: Los Angeles, CA, United States
What they do:
Superpowers for litigators
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HQ: San Francisco, CA, United States
What they do:
AI-powered product assistance for modern software teams
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HQ: San Francisco, CA, United States
What they do:
Read romance comics.
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HQ: San Francisco, CA, United States
What they do:
Frontier AI to stop fraud, abuse, and financial crimes.
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HQ: San Francisco, CA, United States
What they do:
Headcount & Compensation Management
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HQ: San Francisco, CA, United States
What they do:
The spatial AI to plan, build and maintain the world's infrastructure
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HQ: San Francisco, CA, United States
What they do:
An AI tutor that helps you study
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HQ: San Francisco, CA, United States
What they do:
Automating Data Entry for Clinical Trials
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HQ: San Francisco, CA, United States
What they do:
Revenue Superintelligence
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HQ: San Francisco, CA, United States
What they do:
A marketplace for B2B businesses to buy warm intros.
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HQ: San Francisco, CA, United States
What they do:
QA agents that write tests 10x faster with zero maintenance
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HQ: San Francisco, CA, United States
What they do:
Enzyme design models.
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HQ: San Francisco, CA, United States
What they do:
Invoicing that pays you even if your buyer doesn’t
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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
What they do:
AI Employees for Distributors
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HQ: San Francisco, CA, United States
What they do:
Payments made easy for international travelers.
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HQ: San Francisco, CA, United States
What they do:
The Open Source Agentic Browser
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HQ: San Francisco, CA, United States
What they do:
Reliable AI for Regulated Ops
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HQ: San Francisco, CA, United States
What they do:
AI Affiliate Network For Financial Companies
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HQ: San Francisco, CA, United States
What they do:
AI tutor starting with maths and science
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HQ: San Francisco, CA, United States
What they do:
Cooking something sweet and salty!
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HQ: San Francisco, CA, United States
What they do:
Foundation models to automate x-ray analysis for radiologists
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HQ: San Francisco, CA, United States
What they do:
Connect with hotel owners around the world.
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HQ: San Francisco, CA, United States
What they do:
Deep intelligence for private markets
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HQ: San Francisco, CA, United States
What they do:
The authentication framework for TypeScript
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HQ: San Francisco, CA, United States
What they do:
Product Native Models
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HQ: San Francisco, CA, United States