The Unitree Go2 is comfortably the best-selling quadruped robot on the UK secondary market, and for good reason. It brought genuine legged robotics within reach of serious hobbyists, educators, and small research teams when it launched, and a maturing used market now makes it even more accessible. This review covers all three variants - Air, Pro, and EDU - so you can work out which one matches your needs and budget before buying new or used.
For a full breakdown of current new and used pricing, see our dedicated Unitree Go2 UK price guide. For general guidance on buying a used quadruped, our used robot dog buyers guide covers the broader landscape.
Go2 Variants: What You Actually Get
Unitree positions the Go2 range across three distinct tiers. The hardware chassis is largely shared across all three - the differences lie in sensors, software access, and support.
Go2 Air
The Air is the entry point: a capable quadruped with the standard Go2 locomotion hardware, a front-facing camera, 3D lidar for basic obstacle avoidance, and approximately 1-hour battery life. App control via the Unitree mobile app and an optional joystick controller work well for teleoperation and basic autonomous navigation.
New UK price: approximately £1,100. Used: £700-900.
The Air is suited to hobbyists who want to experience quadruped robotics, content creators, and light educational use where the goal is showing locomotion rather than programming it. If you want to write code, you will quickly hit the Air's limitations.
Go2 Pro
The Pro is where the Go2 becomes genuinely interesting for developers and educators. Key upgrades over the Air:
- 4D lidar (time-of-flight point cloud at higher resolution and range than the Air's 3D unit)
- Front and rear RGB-D cameras for richer environmental perception
- ROS2 support out of the box
- Improved battery offering 1+ hour at normal operation
- Access to the Unitree SDK for Python-based programming
New UK price: approximately £2,100. Used: £1,400-1,800.
The Pro is the variant we would recommend to the majority of UK buyers who want to do something meaningful with the robot beyond remote control. ROS2 compatibility opens up a huge ecosystem of existing robotics software, and the improved sensor suite makes perception tasks considerably more tractable.
Go2 EDU
The EDU is the research and institutional variant. It adds:
- Full open SDK with low-level joint torque and velocity control
- Payload mounting system for adding sensors, arms, or custom hardware (up to approximately 5 kg)
- Priority support from Unitree for institutions
- Extended SDK documentation and example code
New UK price: approximately £2,800. Used: rarely available, occasionally seen at £2,000-2,400.
The EDU is the right choice for university robotics labs, funded research groups, and companies building products on top of the Go2 platform. The full joint-level SDK access is genuinely different from what the Pro offers - it enables whole-body control research, custom gait development, and hardware-in-the-loop simulation in ways that the Pro's higher-level SDK does not.
Locomotion: Real-World Performance
The Go2's locomotion is the reason it has sold in the numbers it has. Unitree's reinforcement learning-trained locomotion controllers produce movement that is fluid, reactive, and impressively robust across surfaces.
Flat surfaces: Excellent. The Go2 walks, trots, and gallops across indoor flooring, carpets, and concrete with no difficulty. Speed is configurable from a gentle walk to a trot that covers ground at roughly 3.5 m/s.
Grass and outdoor terrain: Very good. The Go2 is one of the most capable outdoor quadrupeds at its price point. Grass, gravel, bark mulch, mild slopes, and compacted dirt paths are handled without special configuration. This is where the Go2 outperforms cheaper alternatives that look similar but fall over on anything but flat floors.
Kerbs and obstacles: The Go2 handles kerbs up to around 15 cm reliably. The lidar-based obstacle detection on the Pro and EDU means it will stop or route around objects in its path during autonomous navigation modes.
Stairs: Stair climbing is not a standard capability on any Go2 variant. Research groups have achieved stair climbing through custom gait controllers, and Unitree has demonstrated it internally, but this is not something you can expect from a Go2 you buy today without significant software development effort.
Weather: The Go2 has a degree of splash resistance but is not formally IP-rated for rain. Light drizzle is generally manageable; extended rain is a risk. Do not submerge it.
> Quick win: If you are buying for outdoor demonstrations or events, the Go2 Pro's rear camera dramatically improves obstacle awareness and makes operating in crowded environments much safer.
Software and Integration
App control: The Unitree mobile app provides a clean interface for teleoperation, selecting built-in behaviour modes (follow, obstacle avoidance, return to home), and viewing the camera feed. It works well for non-technical users and demonstrations.
Joystick control: The optional Unitree joystick controller provides a more precise teleoperation experience, particularly for outdoor navigation. It is worth the extra cost if you are doing regular field operation.
ROS2 (Pro and EDU): The Go2 Pro's ROS2 support is solid. Standard topics for odometry, joint states, camera images, and lidar point clouds are published correctly. The robot integrates with common navigation stacks (Nav2) with moderate configuration effort. Many UK university groups use the Go2 Pro as a mobile research platform precisely because the ROS2 integration is reliable.
Python SDK: Unitree's Python SDK covers motion commands, sensor data access, and some behaviour configuration. It is well-documented by the standards of this market segment, and a growing number of community tutorials and GitHub repositories provide practical examples.
Third-party integration: The Go2 community has produced ROS2 packages, simulation environments (including Gazebo and Isaac Sim support), and libraries for common tasks. The EDU's open joint-level SDK has spawned academic research on legged locomotion, manipulation integration, and multi-robot coordination.
> Quick win: Check the Unitree Go2 GitHub organisation and the community Discord before buying - the volume of active third-party development is a good indicator of long-term software support.
Use Cases
Hobbyists and enthusiasts: The Air is sufficient. Remote control, tricks, recording videos, and basic automation are all accessible through the app. The community is active and friendly.
Educators (school level): The Air or Pro depending on budget. Schools using the Go2 for STEM demonstrations report that students engage strongly with the locomotion and the robot's responsive behaviour. The Pro's programmability supports coding curricula.
University research: The EDU is the correct choice for most research applications. Full joint-level control, the payload mounting system, and institutional support make it worth the premium over the Pro.
Developers building products: The EDU or Pro, depending on how much of Unitree's locomotion stack you want to keep versus replace. Several UK companies are building inspection and survey products on Go2 platforms.
Security and inspection: The Go2 Pro with a custom payload is being used by a small number of UK facilities for routine patrol and visual inspection. The combination of outdoor capability, programmability, and modest cost makes it viable where Spot's price is prohibitive.
See our comparison of the full quadruped market in the used robot dog buyers guide for context on how the Go2 compares to alternatives.
Used Go2: What to Check
The Go2 is now appearing on the UK used market in reasonable numbers, primarily from enthusiasts who have upgraded, research groups replacing units, and companies that piloted robots and decided not to continue.
Battery health: This is the most important check on any used Go2. The battery is an active lithium pack and its capacity degrades with cycle count. Ask for the cycle count if the seller can access it, or request a full-charge timed walk test so you can compare actual runtime against the rated figure. A degraded battery on a used Air or Pro will cost £200-400 to replace.
Foot pad wear: The rubber foot pads are a consumable. Heavy wear on the pads indicates the robot has been used a lot, affects traction, and can alter the gait controller's ground contact assumptions. Replacement sets are readily available for around £30-60, but wear level is a useful condition indicator.
Camera calibration: On the Pro and EDU, ask for a demonstration of the camera feeds and confirm that stereo calibration is intact. A mis-calibrated camera pair will cause navigation and perception issues that require re-calibration.
Firmware version: Confirm the firmware version and check it against the current Unitree release. Older firmware may lack bug fixes that affect locomotion stability.
Physical condition: Inspect all four leg assemblies for cracks or damage at the hip and knee joints. These are the most common failure points after falls. Check the lidar unit on the head for any impact damage.
Actuator sounds: Run the robot through all its gait modes and listen for any grinding, clicking, or irregular sounds from the actuators. Some wear noise is normal; sharp or rhythmic grinding is a warning sign.
> Quick win: Ask the seller to demonstrate the Go2 on outdoor terrain if at all possible. Indoor demos on a flat floor hide locomotion issues that become apparent on grass or gravel.
Verdict
The Go2 Pro is the sweet spot for most UK buyers in 2026. At £2,100 new (or £1,400-1,800 used), it delivers outdoor-capable locomotion, a useful sensor suite, ROS2 integration, and a large community - for less than a month's salary at a mid-level engineering role. The Air is the right choice if you genuinely only want remote control. The EDU is worth the extra cost for institutions that need joint-level access or payload flexibility.
Compare the Go2 against Unitree's humanoid offering in our Go2 vs G1 comparison context, or browse current Go2 listings on Robot AutoTrader. You can also track depreciation and market trends for the Go2 on our resale index.
For the humanoid alternative at higher budget and capability, see our Unitree G1 review and humanoid robot prices guide.
Frequently Asked Questions
What is the difference between Go2 Air, Pro, and EDU?
The Go2 Air is the entry-level variant with 3D lidar, basic cameras, and approximately 1-hour battery life, priced around £1,100 new. The Go2 Pro adds 4D lidar, front and rear cameras, ROS2 support, and an improved battery, priced around £2,100. The EDU adds an open SDK with full joint access, a payload mounting system, and Unitree institutional support, priced around £2,800.
How much does a used Unitree Go2 cost in the UK?
Used Go2 Air units are trading at £700-900 in the UK. Used Go2 Pro units sell for approximately £1,400-1,800 depending on condition and accessories. The EDU variant rarely appears on the used market as most are held by institutions.
Can the Unitree Go2 climb stairs?
The Unitree Go2 can navigate kerbs, low obstacles, and uneven terrain very well. Full stair climbing is possible with the Pro and EDU variants using custom locomotion controllers, but is not a standard out-of-the-box capability on any variant. The robot handles outdoor terrain including grass, gravel, and mild slopes reliably.
What programming languages does the Unitree Go2 support?
The Go2 Pro and EDU support Python via the Unitree SDK, and the Pro and EDU both offer ROS2 compatibility. The EDU adds full open SDK access for low-level joint control. The Air is primarily app-controlled with limited programmatic access.