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Top AI Agent Startups

This list has 292 startups and was last updated on Oct 15, 2026. 91 of them are hiring right now. Biggest hubs: San Francisco (151), New York (32), and London (9). Largest teams: Leena AI, Magic, and Plivo. Latest round: Harmonic Security raised $50M (Oct 14, 2026).

292 startupsPage 1 of 9

Armadin

What they do:

Cybersecurity startup Armadin Inc. today announced that it has raised $255.5 million in funding at a valuation exceeding $2.5 billion. Andreessen Horowitz and Accel co-led the Series B round. They were joined by…

Quick facts:

Funding:

$256M · Series B · Oct 2026

19-year-old-founder

What they do:

Artificial intelligence hardware startup Ghost AI said today it has raised $11 million in funding to build what it believes is the first personal computer that’s dedicated to running personal AI agents. The round was…

Quick facts:

Funding:

$11M · Oct 2026

Questions and answers

How many startups are on this list?

There are 292 startups on this list, last updated on Oct 15, 2026.

Which of them are hiring?

91 of them are hiring right now, including Leena AI, Magic, and Miso.

Which of them have the largest teams?

By team size: Leena AI (500 employees), Magic (350 employees), and Plivo (320 employees).

Which of them raised money recently?

Latest rounds: Harmonic Security — $50M (Oct 2026), Uvi — $7.5M Seed (Oct 2026), and Evos — $9M Pre-seed (Oct 2026).

Where are they based?

The biggest hubs are San Francisco (151), New York (32), and London (9).