Bullfrog
An AI-driven robotic gun that shoots drones out of the sky with ordinary bullets — the "magazine-deep, ten-dollar-a-kill" answer to FPV and swarm attacks. Computer vision lays the gun; a human pulls the trigger. Fielded with the US Army and Navy and now valued at $2.2 billion.
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An AI-driven autonomous robotic gun that detects, tracks and shoots small drones out of the sky using ordinary small-arms ammunition. It is the "gun-based, magazine-deep, cheap-per-kill" answer to the FPV and swarm threat — turning the drone-war economics around so a defender spends bullets, not million-dollar interceptors, to kill a hundred-dollar drone. Computer vision lays the gun; a human gives the command to fire.
Overview
The Bullfrog, built by Allen Control Systems (ACS), is a stabilized, motorized gun turret wrapped around a service-standard weapon and driven by AI fire-control: machine-vision software autonomously detects, identifies, tracks and lays the gun onto a small drone, and a human operator gives the command to fire (a human-in-the-loop design). Its whole premise is economic. Cheap one-way attack drones and swarms have made missile-based air defense unaffordable — firing a million-dollar interceptor at a $500 quadcopter is a losing trade — so the Bullfrog answers mass with mass of its own: standard bullets, fired with machine precision at a claimed cost-per-kill of around $10. It is the "every movement answered" denial layer of the transparent-battlefield thesis — the system that turns seen into dead without breaking the bank.
Development
ACS was founded in 2022 in Austin, Texas, by two former US Navy nuclear-reactor engineers, Steven Simoni and Luke Allen, with Mike Wior — the founders having previously built the restaurant robot company Bbot, sold to DoorDash in 2022. The Bullfrog was pitched explicitly at the lesson of Ukraine and the Middle East: that drones had inverted the cost of air defense. The company moved fast from a $12 million seed round in 2024 to a $200 million Series B at a $2.2 billion post-money valuation in 2026, led by Smash Capital — one of the fastest-rising counter-drone startups to win Pentagon attention.
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