Epirus vs Relativity Space
Side-by-side comparison of AI visibility scores, market position, and capabilities
Raised $250M Series D (Mar 2025). $43.6M Army follow-on contract. Leonidas Gen 2 autonomous high-power microwave counter-drone system completing Army testing Feb 2026. GD partnership for HPM on autonomous vehicles.
About
Epirus develops Leonidas — a high-power microwave (HPM) directed energy system for counter-drone operations — which uses pulsed microwave energy to defeat drone swarms by disrupting electronics simultaneously across multiple targets. The company raised $250 million in Series D financing and secured a $43.6 million Army follow-on contract, with Leonidas Gen 2 completing Army testing in February 2026 and the Gen 2 Autonomous Ground Vehicle variant unveiled at Global Force 2026 in March 2026 through a partnership with General Dynamics.
Relativity Space is building the world's first fully 3D-printed rocket, using autonomous robotic manufacturing to reduce production time from years to 60 days. HQ: Long Beach, CA.
About
Relativity Space is an aerospace company pioneering a new approach to rocket manufacturing through large-scale 3D printing and autonomous robotics, with the goal of building a fully vertically integrated launch company that can design, manufacture, and launch rockets at a fraction of traditional cost and time. Founded in 2015 by Tim Ellis and Jordan Noone, former SpaceX and Blue Origin engineers, Relativity uses its proprietary Stargate metal 3D printing system — the world's largest metal 3D printer — to fabricate rocket structures from aluminum alloy, reducing part counts from 100,000+ (traditional rockets) to under 1,000.
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