The Unitree G1, the robot UFB and ARC use for lightweight fights: what Unitree publishes and what it does not
Unitree lists the G1 at about 35 kg, 23 joints, about two hours of battery and US $13.5K. UFB assigns it to Season 2 teams and ARC uses it as its lightweight; nothing published describes a fighting-specific version.
Most humanoid robot fights on the record are fought on one of two machines: the EngineAI T800 or the Unitree G1. The G1 is the smaller, cheaper one, and it is the machine behind the lightweight end of the sport. This is what Unitree itself publishes about it, and what the leagues say about how they use it.
What the manufacturer lists. Unitree's G1 page (unitree.com/g1, read 11 November 2026) gives a standing size of 1320 by 450 by 200 millimetres, a weight of about 35 kilograms with battery, and 23 degrees of joint freedom for the standard model, with the EDU model listed at 23 to 43. It names a 13-string lithium battery, a battery life of about two hours, a depth camera and 3D LiDAR, an eight-core processor, Wi-Fi 6 and Bluetooth 5.2, and over-the-air software updates. The price shown is US $13.5K, excluding tax and shipping. These are Unitree's own figures for the product it sells, not measurements of a robot in a ring.
A note on price. When the G1 was unveiled in May 2024, press reports gave about 16,000 dollars. The figure on Unitree's page today is lower, and it applies to the base model. We have not found a published price for any modified or EDU configuration used in fights.
Where it fights. Ultimate Bots (UFB) lists four permanent teams in Season 2, each on a league-assigned Unitree G1, according to ultimatebots.com/schedule when we last read it on 3 November. ARC, the Avatar Robotic Competition, runs two weight classes: the G1 as its lightweight and the T800 as its heavyweight. CMG's 2025 robot-fighting event used a G1 that Unitree had modified. Earlier UFB reporting also records pilots driving G1s with game controllers and a browser.
What is not the same as a stock robot. A fight robot may differ from the retail model. Unitree modified the G1 for the 2025 CMG event, and we have not found a description of what was changed there or in any other league. Treat the specification above as the starting point, not the specification of a fighting G1.
Why it matters. Because the same machine is used by several leagues, results across promoters are easier to compare than the leagues' differing rules and control methods suggest. A league that assigns identical G1s to its teams, as UFB does, is also choosing to make the pilots, not the hardware budgets, the difference. Whether that holds up in a fight is something Season 2, which opens at TwitchCon San Diego from 13 November, will start to show.
What we will update. We will revise this if Unitree or a league publishes details of a fight-specific G1 or a change to the price.
Source unitree.com/g1