What they do:
Notion for AI chats
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HQ: San Francisco, CA, United States
Top B2B Startups
This list has 3,431 startups and was last updated on Oct 15, 2026. 897 of them are hiring right now. Biggest hubs: San Francisco (1,811), New York (387), and London (120). Largest teams: Deel, 99minutos, and GrubMarket. Latest round: Onebrief raised $151M (Oct 14, 2026).
3,431 startupsPage 62 of 96
What they do:
Enterprise post-training, monitoring, and continual learning platform
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HQ: San Francisco, CA, United States
What they do:
RL environments for robotics companies
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What they do:
AI models that learn from experience
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HQ: San Francisco, CA, United States
What they do:
AI SRE agent that triages, coordinates, and fixes production incidents
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HQ: San Francisco, CA, United States
What they do:
AI agents that automate B2B software implementation
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HQ: San Francisco, CA, United States
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Scaling formal verification to accelerate scientific discovery
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HQ: San Francisco, CA, United States
What they do:
Infrastructure for Autonomous Science
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HQ: San Francisco, CA, United States
What they do:
AI powered reconciliation for high-volume payments companies
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What they do:
Your software should build itself.
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What they do:
Open-source Agentic Development Environment
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HQ: San Francisco, CA, United States
What they do:
Turn gatherings into lasting relationships.
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HQ: San Francisco, CA, United States
What they do:
API sandboxes, built for AI agents
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HQ: San Francisco, CA, United States
What they do:
The secure training data R&D engine for physical AI
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HQ: San Francisco, CA, United States
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AI account managers for consumer/self-serve apps
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HQ: New York, NY, United States
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Compression middleware that improves LLM outputs
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HQ: San Francisco, CA, United States
What they do:
Payments for Conversational Agents
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HQ: San Francisco, CA, United States
What they do:
Agentic Messenger
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What they do:
Adversarial AI that breaks your AI
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HQ: San Francisco, CA, United States
What they do:
Using VLMs to Catch Damage
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HQ: San Francisco, CA, United States
What they do:
Real-time interaction models for voice agents
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What they do:
AI operating system for advertising
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HQ: London, United Kingdom
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The customer brain that connects data to explain customer behavior
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HQ: San Francisco, CA, United States
What they do:
FDE as a platform for rebuilding critical operations in software.
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HQ: San Francisco, CA, United States
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AI Cost Management: Track and attribute AI spend across every provider
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HQ: San Francisco, CA, United States
What they do:
AI Video Production for Professionals
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HQ: San Francisco, CA, United States
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AI coworker for video editors to ship more video faster
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HQ: San Francisco, CA, United States
What they do:
Code review platform for humans and agents
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HQ: New York, NY, United States
What they do:
The Media Engine of the AI Era
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HQ: San Francisco, CA, United States
What they do:
We help software companies get discovered and used by AI agents
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HQ: San Francisco, CA, United States
What they do:
iMessage infrastructure for business
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HQ: New York, NY, United States
What they do:
Turn how your team works into playbooks and agents
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HQ: San Francisco, CA, United States
What they do:
Make software self-healing
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What they do:
Make websites improve themselves.
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HQ: San Francisco, CA, United States
What they do:
Autonomous research agents for R&D and applied science
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HQ: San Francisco, CA, United States
What they do:
staffing firms with dreach grow revenue faster.
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HQ: San Francisco, CA, United States