K5 vs Cobalt R100
K5
Knightscope
America's most widely deployed outdoor security robot. Knightscope K5 is a 5ft tall, 400-lb autonomous security robot that patrols parking lots, corporate campuses, and public venues at $7/hr — less than minimum wage. Equipped with 360° HD cameras, license plate recognition (ALPR), thermal imaging, and acoustic surveillance. Over 500 units deployed across the US at clients including Microsoft, NVIDIA, and the Sacramento Kings.
Full profileCobalt R100
Cobalt Robotics
Leading indoor enterprise security robot. Cobalt R100 combines autonomous patrol with a human-in-the-loop model: when the robot detects something anomalous, it escalates to a live Cobalt Security Specialist within 30 seconds. Over 5M patrol miles logged, 200+ enterprise clients including Palo Alto Networks, Rite Aid, and multiple Fortune 500 data centers. Detects tailgating, after-hours intrusions, and environmental hazards.
Full profileSpec Comparison
| Spec | K5 | Cobalt R100 |
|---|---|---|
| Category | Security | Security |
| Price | $7/hr RaaS | $5–7/hr RaaS |
| Year | 2014 | 2018 |
| Height | 152cm | 130cm |
| Weight | 181kg | 45kg |
| Speed | 3mph (patrol) | 2mph patrol |
| Battery | 24hr continuous | 14hr |
| OS | Knightscope OS | Cobalt OS |
AI and Software
K5
- Anomaly detection
- ALPR
- Facial recognition
- Behavioral AI
Cobalt R100
- Behavioral anomaly detection
- Tailgating detection
- Environmental monitoring
Cobalt wins for indoor enterprise, K5 wins outdoors
Knightscope K5 and Cobalt R100 target different environments — K5 is optimized for outdoor patrol (parking lots, campus perimeters) while R100 is built for indoor enterprise settings (offices, warehouses, data centers). Cobalt wins the head-to-head because its hybrid human-in-the-loop model — escalating ambiguous situations to a live Cobalt Security Specialist — gives it superior judgment quality and reduces false alarm rates. K5's license plate recognition (ALPR) and outdoor weatherproofing make it the right choice for parking and perimeter security. For most enterprise buyers choosing an indoor security robot, Cobalt R100's 5M+ patrol miles and 200+ client deployments demonstrate the more mature product.
Cobalt R100 is better for
indoor enterprise security requiring human judgment escalation and behavioral AI for offices and warehouses
K5 is better for
outdoor parking lot patrol, perimeter security, and license plate recognition where K5's design wins