
What they do:
Understand why your AI agent breaks. Iterate fast to fix it.
Quick facts:
HQ: London, United Kingdom
This list has 3,793 startups and was last updated on Oct 15, 2026. 728 of them are hiring right now. Biggest hubs: San Francisco (2,095), New York (445), and London (118). Largest teams: ZeroPath, Voiceops, and Data Driven Bioscience. Latest round: Altay Therapeutics raised $15.7M (Oct 2, 2026).

What they do:
Understand why your AI agent breaks. Iterate fast to fix it.
Quick facts:
HQ: London, United Kingdom

What they do:
The Agent Analytics Platform
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HQ: Los Angeles, CA, United States

What they do:
The fastest and cheapest way to use AI with ITAR or CUI data.
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HQ: San Francisco, CA, United States

What they do:
AI-powered demand forecasting for retail
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What they do:
AI Copilot that automates admin work for veterinary professionals
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What they do:
awen translates intent into exceptional visuals through conversation
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What they do:
connect, migrate and implement enterprise systems
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HQ: Germany

What they do:
The memory computer for your digital life.
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HQ: San Francisco, CA, United States

What they do:
The personal AI agent for Korea.
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HQ: San Francisco, CA, United States

What they do:
The P&L for knowledge work
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HQ: San Francisco, CA, United States

What they do:
The fastest & most scalable graph-vector database on the market
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HQ: London, United Kingdom

What they do:
The data layer for scientific research
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HQ: San Francisco, CA, United States

What they do:
We help you get compliant while you focus on your business.
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HQ: San Francisco, CA, United States

What they do:
Enterprise Voice Agents
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HQ: Pittsburgh, PA, United States

What they do:
RNA intelligence for precision medicine
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HQ: San Francisco, CA, United States

What they do:
Building socially intelligent AI
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HQ: San Francisco, CA, United States

What they do:
Audio Data for AI Labs
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HQ: San Francisco, CA, United States

What they do:
Hardware-Aware AI for Embedded Software
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HQ: San Francisco, CA, United States

What they do:
Your always-on red team.
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HQ: New York, NY, United States

What they do:
Done-for-you AI video ads and Meta campaign management
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HQ: San Francisco, CA, United States

What they do:
Your phone finally has someone to run it. Plug in Blue, just ask.
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HQ: San Francisco, CA, United States

What they do:
Tinder for jobs
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HQ: San Francisco, CA, United States

What they do:
Accelerate Product Iteration
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HQ: San Francisco, CA, United States

What they do:
The fastest way to sell online.
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HQ: San Francisco, CA, United States

What they do:
Zero-trust authentication, authorization, and auditing for AI agents
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HQ: San Francisco, CA, United States

What they do:
Expert STEM reasoning data for frontier AI labs.
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HQ: San Francisco, CA, United States

What they do:
AI for detecting patent infringements
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HQ: San Francisco, CA, United States

What they do:
Real World Environments and Data for AI
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HQ: San Francisco, CA, United States

What they do:
AI to fight financial crime
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HQ: New York, NY, United States

What they do:
Make everyone on your team an engineer
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HQ: London, United Kingdom

What they do:
Agent Platform for Life Sciences
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HQ: New York, NY, United States

What they do:
Your agents should never make the same mistake twice.
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HQ: San Francisco, CA, United States

What they do:
Claude code for Mechanical Engineers
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HQ: San Francisco, CA, United States

What they do:
Extend cloud sandboxes with iOS, Android and more
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HQ: San Francisco, CA, United States

What they do:
Collaborative AI app builder for teams
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HQ: San Francisco, CA, United States

What they do:
AI coworker for marketing teams at the largest consumer brands
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