Robot dogs in 2026: quadruped robots compared, from desktop kits to Spot, ANYmal and B2

This guide sorts the 23 quadruped robots in our database into three working classes (desktop and education, research and prosumer, and industrial inspection) and explains which specs matter in each. It covers payload, runtime, IP rating, stairs, speed, SDK and ROS support, the wheeled-leg variants and what the published prices really mean, with deployments only where a maker or a named customer has documented them.

Last checked 1–9 October 2026. Spec-based analysis from maker-published figures; we have not tested these robots hands-on.

Three markets that share one body plan

Every robot in our quadruped category has four legs, and most have the same joint layout: three motors per leg, 12 degrees of freedom in total. Boston Dynamics' developer documentation describes Spot exactly that way (About Spot), and 13 of the 18 records in our database that publish a DOF figure list 12. Beyond that shared skeleton, the market splits sharply.

• Desktop and education kits weigh under half a kilogram, run on hobby electronics and cost a few hundred US dollars. They teach gait control and coding. They do not carry anything useful.
• Research and prosumer robots weigh roughly 9–20 kg, carry up to about 15 kg while walking and cost from about US$1,600 to US$10,000 where a price is published. They are the default platform for university locomotion and reinforcement-learning work.
• Industrial robots weigh 34–85 kg, are sealed to IP54 or better, carry 10–50 kg and run for 1.5–6 hours. Most are sold by quote. They patrol substations, refineries, tunnels and plant rooms, and some serve police bomb squads and the military.

A wheeled-leg sub-class (wheels at the feet instead of rubber pads) now sits across the research and industrial tiers. We cover it separately below.

Industrial inspection quadrupeds

These are the robots that buyers in energy, utilities and heavy industry shortlist. The table lists all 12 records in our database that weigh 30 kg or more.

What the spec sheet does not tell you

Runtime is quoted under the kindest conditions. Boston Dynamics calls Spot's 90 minutes an average that varies with payload and environment (Spot product page). Ghost Robotics ties Vision 60's 3.15 hours to continuous walking at 0.9 m/s (Vision 60 page). Unitree's shop listing gives the B2 more than 5 hours unloaded but more than 4 hours with a 20 kg load (B2 shop listing). Ask any vendor for runtime with your sensor payload fitted, at your patrol speed.

Speed figures mix walking, fast-walk and sprint. Our database records Vision 60 at 0.9 m/s because that is the maker's standard walk; the same page lists 1.2 m/s fast-walk and 2.4 m/s sprint. ANYbotics gives ANYmal a 1.3 m/s maximum but recommends 0.75 m/s (ANYmal technical specifications). A "6 m/s" headline from a Chinese maker and a "1.6 m/s" headline from Boston Dynamics are not measuring the same thing. For inspection, speed barely matters: the robot stops at every gauge.

Payload has at least three meanings. "Carry payload" is what the robot can walk with. Some makers also publish a peak or standing load: 120 kg for the B2, 100 kg for the A2, 150 kg for the MagicDog Y1. Unitree's As2 page states it plainly: about 65 kg standing, about 15 kg continuous walking (As2 page). ANYbotics lists 10 kg nominal and 15 kg "with reduced performance". Compare walking loads only.

Temperature limits hide conditions. ANYbotics specifies ANYmal for 0–40 °C, with -10 to 50 °C as "typical". Ghost Robotics rates Vision 60 for -40 to 55 °C, but says it cannot cold-start below -20 °C and cannot charge below 0 °C. Spot is rated -20 to 55 °C, as is the X30 (DEEP Robotics X30 guide). If your site is an unheated plant in winter, the charging limit decides more than the operating limit.

IP ratings in practice

The IP code has two digits: the first covers dust, the second water. In the IEC 60529 scheme, 5 means dust-protected and 6 dust-tight; on the water side, 4 is splashing, 5 and 6 are water jets, 7 is temporary immersion and 8 continuous immersion (Intertek summary of IEC 60529).

So Spot's IP54 means it tolerates dust and rain but was not rated against jets or immersion. Most of its industrial rivals in our data claim IP67, and Unitree's B1 claims IP68. Two cautions apply. First, the digits name different tests, so if you plan to hose a robot down after a muddy shift, ask whether it was tested for jets as well as immersion. Second, the rating covers the robot, not the kit around it: ANYbotics rates ANYmal at IP67 but its charger and docking station at IP65.

Explosion-proof is a separate question

An IP rating says nothing about whether a robot can ignite gas. In the EU that is governed by the ATEX Directive 2014/34/EU on equipment for potentially explosive atmospheres (European Commission). Only one robot family in our data claims such certification: ANYbotics says ANYmal X is ATEX and IECEx certified up to Zone 1 IIB (ANYmal X page). For a refinery or offshore platform, that single line rules out every other robot in this guide.

Research, prosumer and education quadrupeds

Variant ladders decide what you can program

The Go2 is the clearest example of a tiered product. Unitree sells Air, Pro and X versions at US$1,600, US$2,800 and US$4,500, and the EDU by quote (Go2 page). Unitree's comparison chart marks secondary development with an empty, partial or full symbol by tier, full only on the EDU, and only the EDU gets the long-endurance battery (about 2–4 hours versus 1–2). The As2 follows the same pattern: Unitree's own page marks secondary development "Not Supported" on the Air and Pro and supported on the X and EDU. The shop lists it "from US$3,100", with the EDU sold through sales (As2 shop listing).

The lesson for labs is simple. The headline price buys a robot you can drive. The price that buys a robot you can program is higher, and sometimes unpublished.

SDK and ROS: read the licence and the version

Unitree publishes unitree_sdk2 and unitree_ros2 under BSD-3-Clause, with ROS 2 Foxy and Humble listed for Go2 and B2 (unitree_ros2 on GitHub). DEEP Robotics publishes its Lite3 motion SDK under MIT (Lite3_MotionSDK). Xiaomi's lab released cyberdog_ros2 as open source. These permissive licences matter for papers and spin-outs.

Two cautions. The B1 is supported only by unitree_legged_sdk v3.3.1 and earlier, per Unitree's repository, so buying an older model can strand you on legacy code. And Boston Dynamics' developer pages centre on a Python SDK and protocol-buffer APIs; its "About Spot" page does not mention ROS. Ghost Robotics, by contrast, lists C/C++, ROS, ROS 2, MAVLink and ATAK compatibility for Vision 60. ATAK and MAVLink are defence and drone ecosystems, which tells you who that robot is built for.

Wheeled-leg quadrupeds

Five robots in our data put driven wheels at the end of each leg. Their DOF count (16 where published) is consistent with the usual 12 leg joints plus four wheel motors. On flat ground they roll, which is faster and cheaper on battery; at a kerb or stair they lift a leg.

The obstacle figures are striking: 70–80 cm single obstacles, against Spot's 300 mm step. Treat them as single-move, best-case manoeuvres, not as something the robot does on every lap. AgiBot also quotes a 29 km range for the D1 Max, which is only plausible because wheels do most of the work. The trade-off is a heavier, more complex foot, and wheels that can slip on grating and wet steel where a rubber pad grips. None of the five makers publishes a price we could confirm, except the B2-W's US$100,000 shop listing.

Typical deployments, where documented

We list only deployments that the maker or the customer has documented. All of them are maker-stated unless marked otherwise.

• Energy and industrial inspection. Boston Dynamics says more than 1,500 Spot robots are in customer hands and names bp, National Grid, Woodside and others on its product page. Its inspection page describes thermal cameras for hot spots, acoustic imagers for air leaks and a pan-tilt-zoom camera for reading gauges (Spot inspection solutions). ANYbotics names Petronas, Shell, Equinor, BASF and Petrobras among ANYmal X early adopters.
• Utilities and tunnels. Singapore's SP Group uses a customised X30, nicknamed SPock, to patrol underground power cable tunnels with video and thermal cameras. SP Group notes that staff previously walked up to 6 km to look for anomalies (SP Group, 27 November 2024). DEEP Robotics separately claims the system saves about 480 hours of manual inspection a year.
• Public safety. Boston Dynamics markets Spot for bomb disposal, chemical, biological and radiological investigation, and remote investigation (public safety page). In a case study, the Montgomery County, Pennsylvania, Sheriff's bomb squad describes using Spot since spring 2024 for suspicious packages and building searches, largely because it climbs stairs in seconds (case study).
• Defence. Ghost Robotics lists military reconnaissance, public safety and law enforcement alongside industrial inspection for Vision 60.

On the ethics question, Boston Dynamics, ANYbotics and Unitree were among six firms that pledged in October 2022 they "will not weaponize our advanced-mobility general-purpose robots" (joint statement via Business Wire). Ghost Robotics was not among the six signatories. Public-sector buyers will want each vendor's current use policy in writing.

How to choose

For teaching coding or kinematics (under US$1,000): the Petoi Bittle X or Mini Pupper 2. The Mini Pupper's ROS 2 support makes it the better bridge to university work; the Bittle X is cheaper and has block-based coding for younger students.

For a university locomotion or reinforcement-learning lab: a programmable tier of the Go2 or As2, or the Lite3 if you want an MIT-licensed low-level joint interface. Budget for the EDU or X version, not the Air.

For site inspection in dry, indoor or mild conditions: Spot has the deepest documented customer base and an autonomous docking story, but only IP54. Check whether 90 minutes covers your route.

For outdoor, wet or dusty sites: look at the IP67 group: X30, B2, ANYmal and Vision 60. The X30 and B2 publish longer runtimes and hot-swappable batteries.

For explosive atmospheres: ANYmal X is the only option in our data with a stated ATEX/IECEx certification.

For long, flat routes with occasional steps: a wheeled-leg model such as the Lynx M20 or B2-W.

Use our quadruped finder to filter by IP rating and payload, or put two models side by side in compare. Our best robot dogs list and quadruped buying guide go further on shortlisting. For a ranking across advanced robot types, see Robot500.

What the numbers say (Analysis)

• The market is overwhelmingly Chinese. 18 of our 23 quadruped records come from mainland Chinese makers, nine of them from Unitree alone. Only Spot and Vision 60 (US) and ANYmal (Switzerland) represent Western industrial makers.
• Weight predicts weatherproofing. All 12 robots weighing 30 kg or more publish an IP rating, and 9 of those 12 claim IP67 or IP68. Only 3 of the 11 lighter robots publish any IP rating, all IP54. Spot, at IP54, is the outlier among heavy robots.
• Runtime has a wide gap between best and worst case. 21 of 23 records publish runtime. Taking the top of each maker's range, the median is 180 minutes; taking the bottom, it is 120 minutes. Among the 11 heavy robots with a runtime, the best-case median is 240 minutes, well above Spot's 90.
• Payload-to-weight ratios differ more than headline payloads. Across the 22 records with a carry payload, the median is 14.5 kg. But Spot carries 41% of its own weight, ANYmal and Vision 60 about 20%, the B2 67% and the As2 (walking load) 75%.
• Prices are scarce, and some are placeholders. 11 of 23 records carry a maker-published US-dollar list price; 10 carry no price at all, including all three Western industrial robots. Four Unitree models (A2, B1, B2, B2-W) sit at exactly US$100,000, and the B2 listing itself tells buyers to contact sales for the real price.
• Software openness is claimed widely but documented narrowly. 20 of 23 records mention an SDK or secondary development, but only 9 name ROS or ROS 2 explicitly, and only 6 publish hot-swappable batteries.

Frequently asked questions

How much does a robot dog cost in 2026?

Published prices run from US$319 for the Petoi Bittle X to US$9,600 for the AgiBot D1 Ultra, with Unitree's Go2 at US$1,600–4,500. Industrial robots are mostly sold by quote. Unitree lists four heavy models at US$100,000, but treats that as a starting point for a sales conversation.

Is Spot waterproof?

No. Spot is rated IP54: protected against dust and splashing water. Several rivals, including ANYmal, Vision 60, X30 and B2, claim IP67, which adds dust-tightness and temporary immersion.

Can robot dogs climb stairs?

Most can, within limits. Spot's maker states a 300 mm maximum step and ±30° slopes. ANYmal handles stairs up to 45° with a 230 mm maximum rise. Small robots such as the Go2 manage about 15–16 cm steps. Always check rise, run and width against your actual stairs.

Are wheeled-leg robots better than legged ones?

They are faster and more efficient on flat ground, and makers claim larger single obstacles. Legs-only robots are simpler and may grip better on grating and wet steel. Choose wheels for long, mostly flat routes.

Which robot dog is best for ROS 2 research?

The Go2 and B2 have official ROS 2 interfaces under BSD-3-Clause. Mini Pupper 2 and CyberDog 2 are ROS 2 native. Check that your purchased variant includes development access; on the Go2 and As2, the entry tiers do not.

Can a quadruped work in explosive atmospheres?

Only if it is certified for it. In our data, only ANYmal X claims ATEX and IECEx certification, up to Zone 1 IIB.

How long does the battery last?

Maker figures range from 30 minutes (Mini Pupper 2) to 360 minutes (B2 and MagicDog Y1, best case). Expect less with sensors fitted, in cold weather or on stairs. Hot-swappable batteries, offered on six models, matter more than raw runtime for round-the-clock patrols.

Methodology

Every figure in this guide comes from the RankedRobot database or from a primary source we opened during research. Database records are built from maker product pages, spec sheets, manuals and official stores; each robot page lists its sources and flags figures as maker-stated, reported or estimated. We added context from maker specification documents, case studies, a customer's own publication, an industry pledge and a test-laboratory summary of the IP code, all linked inline. Medians and counts were computed from our 23 quadruped records, with denominators stated. Where a maker gives a range, we report the range. Prices are shown in the currency and terms the seller publishes, without conversion. Figures were checked between 1 and 9 October 2026. We have not tested these robots hands-on. Read more about how we gather and grade data.

Spotted an error or a newer figure? Email corrections@rankedrobot.com and we'll check it and log the correction.