
Thirdlayer
What they do:
Continual learning for enterprise AI
Quick facts:
HQ: San Francisco, CA, United States
This list has 1,958 startups and was last updated on Oct 15, 2026. 632 of them are hiring right now. Biggest hubs: San Francisco (1,355), New York (312), and Los Angeles (47). Largest teams: Cruise, Relativity Space, and Podium. Latest round: Agriculture Scout AI raised $425K (Oct 13, 2026).

What they do:
Continual learning for enterprise AI
Quick facts:
HQ: San Francisco, CA, United States

What they do:
The first AI mortgage lender
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI-Native Mortgage Broker
Quick facts:
HQ: New York, NY, United States

What they do:
Specialized AI for Every Job
Quick facts:
HQ: San Francisco, CA, United States

What they do:
The smarter way to estimate steel.
Quick facts:
HQ: Houston, TX, United States

What they do:
Long-horizon RL environments
Quick facts:
HQ: San Francisco, CA, United States

What they do:
Human experts as API for AI Agents
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI scribe for Ambulance Reports
Quick facts:
HQ: New York, NY, United States

What they do:
AI Employees for Healthcare
Quick facts:
HQ: San Francisco, CA, United States

What they do:
The local internet for NYC.
Quick facts:
HQ: New York, NY, United States

What they do:
Affordable, intelligent humanoid robots built to deploy at scale
Quick facts:
HQ: San Francisco, CA, United States

What they do:
We Handle AI. You Direct Films.
Quick facts:
HQ: Santa Barbara, CA, United States

What they do:
AI employees for finance, starting with accounts receivable.
Quick facts:
HQ: San Francisco, CA, United States

What they do:
API for parsing multimodal unstructured data
Quick facts:
HQ: San Francisco, CA, United States

What they do:
Robotic factories that build robots
Quick facts:
HQ: Emeryville, CA, United States

What they do:
Production Monitoring for AI agents
Quick facts:
HQ: San Francisco, CA, United States

What they do:
Improve your appearance by measuring, understanding, and tracking…
Quick facts:
HQ: San Francisco, CA, United States

What they do:
LLMs that control robots
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI Licensing Agent for Regulated Industries
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI-native workspace for AEC
Quick facts:
HQ: San Francisco, CA, United States

What they do:
Guardrails to validate your agent's actions before they execute
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI Workforce for Distributors and Manufacturers
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI agents for banks
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI Revenue Engine for the Equipment Industry
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI career agent that finds matching jobs & applies on your behalf
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI-Native insurance company
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI scientists to discover materials for the semiconductor industry.
Quick facts:
HQ: San Francisco, CA, United States

What they do:
The AI mobile wallet that replaces Apple Pay
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI implementation firm that maps and automates business processes
Quick facts:
HQ: San Francisco, CA, United States

What they do:
Replacing GPUs with human brain cells
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI-native BPO for enterprise order-to-cash
Quick facts:
HQ: San Francisco, CA, United States
What they do:
New semiconductors that merge compute and vision
Quick facts:
HQ: Durham, NC, United States

What they do:
Air Defense as a Service for Civilian Infrastructure.
Quick facts:
HQ: San Francisco, CA, United States

What they do:
The autonomous back-of-house for restaurants.
Quick facts:
HQ: New York, NY, United States

What they do:
Turn your company's computer work into AI agents.
Quick facts:
HQ: San Francisco, CA, United States

What they do:
AI collections agency for late stage portfolios
Quick facts:
HQ: San Francisco, CA, United States