Unitree Go1 Price 2026: Discontinued Status & Go2 Alternative

Can you still buy a Unitree Go1, and what did it cost?

No — not new, not officially, and Unitree never actually announced that. The Go1, the $2,700 robot dog that made quadrupeds affordable in 2021, was quietly discontinued: its store listing was still purchasable as late as April 2023 before quietly losing its buy button around the Go2's mid-2023 launch, and yet unitree.com/go1 is still live today with launch prices and no end-of-life notice, which is exactly why so many people still ask whether it's for sale. What exists in 2026 is a thin used and new-old-stock market, a robot with a documented (and now server-side dead) remote-access backdoor, and a successor that costs less than the Go1 did. We verified every price and link on this page on July 22, 2026.

What happened to the Go1

The archival spec sheet

Unitree's Go1 documentation is scattering, so here is the per-tier record, drawn from the still-live official page, the official user manual PDF, and IEEE's launch coverage. One honesty note found inside Unitree's own reseller datasheet, verbatim: the marketing material is "Partly exaggerated, but basically true." Their words. Read the speed row accordingly.

The famous "17 km/h, faster than Spot" headline traces to that 4.7 m/s sprint figure, which Unitree's own page presents as a calculated maximum; the robots people actually received ran 2.5–3.7 m/s depending on tier. The compute descriptions in official material are marketing shorthand ("128-core 0.5T"); community documentation identifies a Raspberry Pi plus, on higher tiers, Jetson-class modules, and the security research below confirmed the Pi.

Where the Go1 documentation lives now

A large share of Go1 searches in 2026 are people hunting documentation that Unitree buried. Working links, verified today:

The backdoor, told straight

In March 2025, researchers Andreas Makris and Kevin Finisterre published CVE-2025-2894: every Go1 shipped with a pre-installed tunnel client for CloudSail, a remote-access service operated by China-based Zhexi Technology, launching automatically at boot. Anyone holding a valid CloudSail API key could list connected robots, open a tunnel, view live camera feeds without authentication, log in over SSH with the default credentials the robots shipped with (username "pi", password "123"), and pivot into the owner's network. The researchers enumerated 1,919 Go1 units that had checked into the service, including robots on networks at MIT, Princeton, Carnegie Mellon and Waterloo. Their full teardown is published as a report; the NVD rates the CVE 6.6, Medium, whatever the headlines said.

Three precisions the coverage usually mangles. First, there is no documented evidence anyone exploited it maliciously in the wild; the demonstrated risk was the architecture itself. Second, "it was patched" is the wrong verb: Unitree's response was to change the service's management key on March 24, 2025 and shut CloudSail down entirely on March 29 — a server-side kill, also covered by the South China Morning Post. No firmware update ever removed the client from the robots, and the default credentials remain unless owners change them. Unitree's statement denied leaving a deliberate backdoor and said the service "will no longer affect the use of Go1 series products." Third, this is a different vulnerability from UniPwn, the September 2025 Bluetooth root exploit that affects the Go2, G1, H1 and B2 — the Go1 is not on the UniPwn list, and the Go1's CloudSail issue does not affect those newer robots. Press pieces routinely stitch the two stories into one "unfixed backdoor" narrative; they are separate bugs with separate statuses.

If you run a Go1 today, the researchers' mitigation still applies: log into the onboard Pi, change the default password, disable the CloudSail client service and move its autostart directory so it cannot re-establish — and keep the robot off untrusted networks regardless.

Buying a used Go1 in 2026: the checklist

The used market is thin: eBay carries occasional new-old-stock and lab-surplus units, with Go1 Pros listing around $1,699 — genuinely below launch price. Before paying anything:

Battery first. This is the deal-breaker risk. Unitree still lists Go1 batteries ($600 standard, $850 long-range) but both were out of stock at our check, and third-party stock is intermittent. A Go1 without a healthy battery and a plausible replacement path is a paperweight with 12 motors. Parts second. The GO-M8010-6 joint motor was still listed at $369 in Unitree's store feed at our check, and is about the only Go1-era part with official availability; everything else is salvage. Security third. Assume the CloudSail client and default credentials are present; apply the mitigation above before the robot touches a network. Firmware last. Treat the software as frozen — there is no evidence of active official Go1 firmware support, so what the robot does today is what it will do forever.

Go1 vs Go2: the honest redirect

The only rational used-Go1 buyer in 2026 is someone with existing Go1-era research code (the SDK and URDF still work, and MIT's walk-these-ways stack remains canonical), a battery plan, and an air-gapped network. Everyone else should read our Go2 review — the successor is cheaper than the Go1 ever was, and note it carries its own security homework.

Misinformation audit: seven Go1 claims, checked

Why the Go1 still matters

Unitree's IPO prospectus reports more than 30,000 quadrupeds shipped from 2022 through September 2025, a wave the Go1 started; the Go1-era install base is plausibly in the low thousands, many in university labs. That's why it refuses to disappear: it remains a standard reinforcement-learning platform, its SDK and models are still public, and half the low-cost quadruped research of the past five years was validated on its 12 joints. The Go1 is also, less flatteringly, the robot that taught the industry to check what ships in the firmware — a lesson its successors are still learning.

The bottom line

The Go1 was the moment robot dogs got cheap, and it aged into a cautionary tale with a healthy afterlife in research labs. In 2026 it is not a product; it's a decision about legacy code, battery logistics and network hygiene. If that sentence doesn't describe your situation, buy the Go2 — it costs less than the Go1 did, the parts exist, and the skeletons in its firmware are at least the currently-documented kind. For the wider field, our Unitree family guide and R1 review cover where the company went after its dog days.