What they do:
UI building blocks for the agentic internet
Quick facts:
HQ: San Francisco, CA, United States
Top B2B Software Startups in San Francisco
This list has 2,110 startups and was last updated on Oct 15, 2026. 572 of them are hiring right now. Largest teams: Stripe, Deel, and GrubMarket. Latest round: Modal raised $750M (Oct 14, 2026).
2,110 startupsPage 29 of 59
What they do:
Financial infrastructure for the agent economy
Quick facts:
HQ: San Francisco, CA, United States
What they do:
LLM context compression for better accuracy
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI production engineer for regulated industries
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Work with agents that already know you
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI Agents for Government Affairs
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Frontier AI Defenses for Social Engineering Attacks
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Evals, RL environments and training data for creative tasks
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Intelligence for cultural institutions
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Evals for humans
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Autonomous operations for industrial distributors
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Platform + FDEs that rebuild enterprises agent-first
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Helping your company find 10x engineers.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Simulations of real people for market research
Quick facts:
HQ: San Francisco, CA, United States
What they do:
A personal or team assistant that works while you sleep
Quick facts:
HQ: San Francisco, CA, United States
What they do:
agents for the rest of us
Quick facts:
HQ: San Francisco, CA, United States
What they do:
We help lawyers start and scale AI-native law firms.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
The AI-native contact center
Quick facts:
HQ: San Francisco, CA, United States
What they do:
The market behind AI hardware.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Reliable and safe data engineering and data science agents
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Build everyday back-office agents on one live model of your books
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Organizing company knowledge
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Infrastructure for building and scaling AI-native businesses.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI-native test infrastructure layer for hardware companies
Quick facts:
HQ: San Francisco, CA, United States
What they do:
The identity and communication layer for AI agents
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Turns real businesses into robotics data vendors
Quick facts:
HQ: San Francisco, CA, United States
What they do:
We find flaws in RL environments and evals and help you fix them.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Internal industrial company data for frontier labs
Quick facts:
HQ: San Francisco, CA, United States
What they do:
RL post-training for science reasoning and performance engineering
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Autoresearch as a service: we solve your hardest measurable problems
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Evals for robots
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Model Agnostic AI coworker in Slack
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Wet lab infrastructure that turns AI experiments into training data.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
See and control what your agents actually do
Quick facts:
HQ: San Francisco, CA, United States
What they do:
An AI-operated logistics company.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
An AI bracelet that remembers your day and acts before you ask.
Quick facts:
HQ: San Francisco, CA, United States