Kesslr Labs

Making space easy.

SABRE

Space Autonomy Board for
Real-time Execution

SABRE is a new class of flight computer built for the future of space autonomy. Where traditional space-grade processors are slow, outdated, and ill-suited to modern AI and guidance demands, SABRE delivers current-generation AI-class performance with deterministic, microsecond-level control loops tuned for rockets, hypersonics, and satellites.

At its core, SABRE integrates a rad-tolerant SoC with FPGA acceleration, ECC memory, and modular I/O supporting SpaceWire, 1553, CAN, optical, and GigE. This is paired with a real-time runtime and SDK that allows missions to “build once, fly anywhere.” The same binaries run in hardware-in-the-loop testbeds, simulation, and flight, enabling seamless certification and dramatically shorter iteration cycles.

Unlike competitors that offer “AI in a box” or decade-old rad-hard CPUs, SABRE unifies AI, GNC, and mission-critical autonomy on one platform. Its locked-in developer ecosystem, modular architecture, and rapid validation through frequent high-G rocket flights set a new standard for survivable autonomy in extreme environments.

With <50 µs loop latency, >50 krad survivability, and SWaP efficiency under 500g and 25W, SABRE lays the foundation of a hardened, scalable autonomy ecosystem for the next generation of spacecraft and aerospace systems.