Problem

Perseus Defense addresses the counter-unmanned aerial systems (counter-UAS) problem: small, inexpensive drones are increasingly able to threaten troops, vehicles, infrastructure, and high-value military assets, while current defenses are often too expensive, heavy, slow, or ineffective. The economic mismatch is stark: existing kinetic interceptors can cost $100,000 or more to defeat drones costing roughly $500, while low-cost drones can endanger assets worth millions or more. Perseus also argues that many current systems are one-to-one and too dangerous for use on U.S. soil, making them poorly suited to the scale and persistence of modern drone attacks.

The primary use case is scalable protection for soldiers and maneuvering formations against Group 1 and Group 2 drones, especially one-way attack drones. The company’s target environments include trucks, boats, convoys, armored vehicles, and other battlefield formations, as well as homeland-security applications where affordable, rapidly deployable defense is needed.

Product / Service

Perseus is developing a portable kinetic interceptor system built around its Harpe guided micro-missile and Perseus launcher. The company describes the missile as a self-guided, autonomous interceptor that detects, engages, and destroys incoming threats. Public specifications list approximately two kilometers of range, 24-inch missile length, and a target cost below $10,000 per shot. The launcher is designed to weigh less than 80 pounds, operate for 24 hours, set up in under 60 seconds, and deploy either in the field or on vehicles.

The system is intended to receive targeting information from command-and-control or sensor systems, connect and synchronize with nearby launchers, build an engagement envelope, and launch one or multiple missiles. Its delivery model is therefore defense-hardware procurement rather than a software-only service: Perseus is pursuing mass-manufactured, portable missile systems that can be deployed as a single launcher or distributed network. The intended benefit is a cheaper, faster-to-field layer of autonomous kinetic defense that can operate alongside other sensors, electronic-warfare tools, and counter-UAS effectors.

Market

Perseus competes in defense technology and the counter-UAS market, specifically the emerging segment of low-cost kinetic drone interceptors. The broader competitive set includes integrated counter-UAS providers such as Anduril, as well as established defense companies including Lockheed Martin and Thales. Other newer or adjacent competitors include Ares Industries, Frankenburg Technologies, Origin Robotics, DroneShield, and Mach Industries, whose Dart interceptor also targets low-cost defeat of small drones. Perseus’s positioning is to make guided missile interception inexpensive enough for mass deployment, while acknowledging that a layered defense architecture will combine multiple approaches.

The company appears to be an early-stage, pre-revenue or revenue-undisclosed defense startup rather than an established production supplier. It launched from Y Combinator in 2025 and publicly announced a $6 million seed round in September 2025. Its disclosed traction includes more than 100 DoD and DHS end-user interviews, four guided-missile iterations and more than 30 live-fire tests, briefings with the Pentagon and congressional officials, planned cooperative research agreements with Army DEVCOM, and participation in the Army’s April 2026 Golden Shield live-fire exercise, where a Perseus Harpe missile was test-fired. Public materials describe the company as building ahead of revenue and do not disclose a production contract or recurring revenue, although the Army testing represents meaningful government validation and a path toward future procurement.