Security Robot Cost: What Patrol Robots Really Cost

What a Robot Security Guard Cost Really Buys

A robot security guard cost is normally a rental rate, because the dominant contract in this market is Machine-as-a-Service rather than a capital purchase. Knightscope states the model plainly on its own blog: "The K5 operates on annual subscription model, just like your cable, mobile phone or internet service," with "the equipment, support, connectivity, and software updates included." There is no hardware to buy and no software to install locally.

Its FY2025 annual report describes the same package in accounting terms. Revenue comes from a subscription that bundles the robots plus "maintenance, service, support, data transfer, KSOC access, charging stations, and unlimited software, firmware and select hardware upgrades." Those agreements typically run 12 months and are billed annually in advance, quarterly, or monthly.

Three contract shapes exist across the wider category. Subscription (MaaS or RaaS) is the default for purpose-built patrol robots and folds hardware, service, and connectivity into one recurring number. Outright purchase applies mainly to general-purpose platforms, stationary towers, and low-cost quadrupeds. Lease or third-party financing sits behind some subscriptions, where a funding partner buys the machine and the vendor bills the client monthly.

The model matters more than the rate. A subscription that covers replacement units, field service, and cellular data behaves very differently from a purchase where all three become your problem in year two.

• Subscription / MaaS: one recurring rate, hardware stays with the vendor, 12-month terms are typical.
• Purchase: you own the machine and carry service, connectivity, and obsolescence yourself.
• Lease or financed: a funding partner holds the asset while you pay a monthly operating cost.

Robot Security Guard Cost by Platform Class

Published security robot prices exist for a handful of platform classes, and the rest of the market is quote-only. The table below carries a price only where a vendor, an SEC-filed document, or a named outlet has published it. "Quote only" is the accurate answer for most rows, and a vendor that refuses to name a range on a first call is behaving normally rather than hiding something.

One reading note: Knightscope's per-hour figures are derived by dividing an annual subscription across all 8,760 hours in a year. They are not a metered rate and the robot is not billed per shift. That is why the same machine can be described as roughly $9 per hour and roughly $79,000 per year without contradiction.

The published band has moved. Knightscope's March 2024 materials gave an effective price of approximately $0.75 to $9 per hour; the March 2025 version gives $1 to $11 per hour. The Bot Scout has previously cited roughly $8 to $9 per hour for the K5, and the contract evidence still supports that for the mobile unit: New York City leased one at about $9 an hour in 2023, and NBC News reported annual rentals of $70,000 to $80,000. $11 per hour is Knightscope's current published K5 figure. The $8 to $9 range reflects 2023-era contract evidence and is the best documented contracted rate rather than the current published one.

The low end of Knightscope's $1 to $11 band belongs to its stationary devices, not to a patrolling machine. Buyers who quote the $1 figure for a K5 are comparing a blue light tower to a mobile robot. Our Knightscope K5 review covers what the mobile unit does on site, and the Knightscope company profile covers the product line.

Robot Security Guard Cost vs a Human Guard Shift

A patrol robot subscription costs less per hour than a staffed 24/7 guard post, and the gap survives the arithmetic. State the assumptions first. Round-the-clock coverage is 8,760 hours a year. A full-time employee works about 2,080 hours, so one continuously staffed post needs roughly 4.2 people once holidays, sick leave, and shift handover are counted. The US Bureau of Labor Statistics puts the median security guard wage at $18.46 per hour, or $38,370 a year, as of May 2024.

Wages are not what a contract guard costs a buyer. A guarding firm bills a rate covering wages, payroll taxes, insurance, supervision, uniforms, and margin, which is why vendor comparisons quote $25 to $65 per hour. Knightscope quotes two different guard bands in different documents: $25 to $65 per hour in its March 2025 investor materials, and $35 to $85 per hour in its marketing blog. Both are vendor estimates, not independent benchmark. Get a real bill rate from a guarding firm in your own market before using it.

The robot column is a subscription, so its annual number is simply the rate multiplied by 8,760. At $8 per hour that is $70,080. At $11 it is $96,360. The BLS median wage across the same 8,760 hours is about $161,700, and that is bare wages for the post with no employer overhead, supervision, or margin added.

What the Quoted Price Leaves Out

The quoted subscription rate is not the total cost of a security robot deployment, and the largest omission is human labour. Somebody has to watch the video, triage the alerts, and decide what to do. Knightscope bundles deployment work into its subscription, including needs assessment, site assessment, site survey, shipping, setup, configuration, and training. Not every vendor does, and a quadruped bought outright includes none of it.

New York City's pilot is the clearest illustration. The city leased a K5 for the Times Square station at about $9 an hour, and then assigned two police officers to accompany the machine at all times during the trial. Two officers cost far more per hour than the robot did. The stated plan was that the robot would patrol alone if the pilot continued, but the trial ended in December 2023 after roughly two months.

Check each of these against the quote before signing. Any one of them can double a first-year figure that looked competitive on the rate card.

• Monitoring labour: who reviews alerts, on what shift, and whether that is your staff or a paid service.
• Site survey and installation: included by some vendors, billed separately by others.
• Connectivity: cellular data plans and coverage dead spots on large or below-grade sites.
• Charging infrastructure: a dock needs power run to it, often in a weather-exposed outdoor location.
• Maintenance and replacement: response time targets, downtime credits, and who pays for vandalism.
• Terrain and weather limits: stairs, kerbs, gravel, snow, and steep ramps can rule a platform out entirely.
• Contract length and renewal: 12-month terms with automatic renewal are standard, so exit terms matter.

Where a Security Robot Does Not Replace a Guard

A patrol robot replaces walking, not judgement, so the per-hour comparison overstates the substitution in most buildings. The Times Square unit could not use stairs, which limited it to one level of a multi-level station. That single constraint decided the deployment more than the price did.

Independent evidence on crime outcomes is thin. NBC News reviewed several US deployments in 2021 and found police could not attribute reductions to the machines. Huntington Park's chief said arrests attributable to the robot were few, and the incidents that did arise involved vandalism against the robot itself. Las Vegas police said calls fell but declined to credit the robot.

That does not make the purchase irrational. Consistent overnight coverage of a car park, a recorded patrol log, and a visible deterrent are real outputs. They are not the same as a guard who can escort a contractor, unlock a door, administer first aid, or make a judgement call about an ambiguous person at 3am. Our security robots overview sets out the sensor-platform test in full.

The failure mode buyers hit most often is alert volume. A machine that generates more notifications than the on-duty team can triage converts a labour saving into a labour cost, and the effect shows up in month two, not week one.

Security Robot Dog Cost

A security robot dog costs far more than the consumer quadruped headlines suggest, and the security-grade platforms are quote-only. Boston Dynamics no longer publishes a Spot price and sells through its sales team; its online store carries accessories and merchandise, not the robot. The $74,500 Explorer figure that still circulates dates from the June 2020 launch of online sales and describes a developer kit, not a configured patrol deployment.

Ghost Robotics publishes no price for Vision 60, which is sold into defence and industrial programmes. Our Ghost Robotics profile covers the platform. Unitree is the outlier: its own store lists the Go2 from $1,600 and the B2 at $100,000, which is the widest published spread of any quadruped line.

Price the payload and the programme, not the chassis. A quadruped used for security needs thermal imaging, a network link, a charging dock, autonomy software, and someone to receive what it sees. A $1,600 quadruped with none of that is a research toy, and treating it as a guard replacement is the most common mistake in this category. The industrial quadruped guide covers what these platforms are actually deployed to do.

How to Get a Real Quote

Ask for a per-site annual number rather than a per-hour rate, because the hourly figure is a division result and hides the contract term. Vendors quote after a site survey, so expect the first conversation to be scoping rather than pricing. Give them the site dimensions, surface types, level changes, lighting, network coverage, and the hours you actually want covered.

Push for the exclusions in writing. Ask what happens if the robot is damaged, how quickly a replacement arrives, whether downtime is credited, who pays for cellular data, and what the renewal rate looks like in year two. Ask whether monitoring is included or sold separately, since that line moves the total more than the hardware does.

Run the comparison against your own guarding invoice, not a national average. If your site already pays for one overnight guard, the relevant question is whether the robot removes that post, reduces it, or adds to it. In most deployments it reduces walking rounds while the post stays, which changes the payback calculation entirely.

For alternatives to the incumbent, our Knightscope alternatives comparison lines up the vendors that compete for the same contracts. For pricing on other robot categories, see how much a humanoid robot costs.

• Request an annual contract value, the term length, and the renewal rate together.
• Confirm in writing what deployment work is inside the subscription.
• Ask for a service level with named response times and downtime credits.
• Establish who monitors alerts and what that costs.
• Compare against your own guarding invoice, not a published average.