Shanghai Kepler Robotics Co., Ltd. Forerunner K2 vs X-Humanoid (Beijing Humanoid Robot Innovation Center) Tiangong Ultra

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Dataset date: 2026-11-03

175 cmhuman

175 cm³Shanghai Kepler Robotics Co., Ltd. Forerunner K2

180 cm⁴X-Humanoid (Beijing Humanoid Robot Innovation Center) Tiangong Ultra

Height to scale. Width is schematic, derived from weight; not a measured body width.

claimed → demonstrated
demonstrated
first delivery recorded

Evidence sheet

Only differences Showing all 20 rows

Evidence sheet, scrolls horizontally below 900px
Property	Shanghai Kepler Robotics Co., Ltd. Forerunner K2	X-Humanoid (Beijing Humanoid Robot Innovation Center) Tiangong Ultra	Difference
Height (cm)	175 cm³ Not reviewed The cited source has not been reviewed for this specific claim.	180 cm⁴ Not reviewed The cited source has not been reviewed for this specific claim.	+5 cm
Weight (kg)	75 kg⁵ Not reviewed The cited source has not been reviewed for this specific claim.	52 kg⁶ Not reviewed The cited source has not been reviewed for this specific claim.	-23 kg
Degrees of freedom	52⁷ Source unavailable The cited source could not be accessed during review. Reason The per-host request budget was reached during the review, so the source content and claim could not be re-established. Checked 2026-09-27 Review method Text review Media type Article Publisher relation Independent source	no sourced value	unknown on one side
Walking speed (km/h)	no sourced value	no sourced value	no sourced value
Payload (kg)	30 kg¹ Not reviewed The cited source has not been reviewed for this specific claim.	no sourced value	unknown on one side
Battery runtime (min)	480 min² Not reviewed The cited source has not been reviewed for this specific claim.	no sourced value	unknown on one side
Hands	no sourced value	no sourced value	no sourced value
Actuator torque (Nm)	no sourced value	no sourced value	no sourced value
Battery (Wh)	no sourced value	no sourced value	no sourced value
Battery swappable	no sourced value	no sourced value	no sourced value
Locomotion	bipedal⁸ Not reviewed The cited source has not been reviewed for this specific claim.	no sourced value	unknown on one side
SDK / ROS	no sourced value	no sourced value	no sourced value
Simulation	No simulation artifact confirmed in targeted search This records a searched-but-not-confirmed result. It does not mean simulation support is unavailable. Search checked 2026-09-27 Search result Targeted searches found no confirmed model for this record; does not mean unavailable. Searched source 1	No simulation artifact confirmed in targeted search This records a searched-but-not-confirmed result. It does not mean simulation support is unavailable. Search checked 2026-09-27 Search result Targeted searches found no confirmed model for this record; does not mean unavailable. Only a TienKung Lite model was found; it does not match the Tiangong Ultra record. Searched source 1	—
Actuator architecture	No actuator architecture confirmed in targeted search This records a searched-but-not-confirmed result. It does not mean a particular architecture is absent. Search checked 2026-09-27 Search result Targeted actuator searches did not confirm an exact-variant architecture claim for this record; this does not mean none exists. Searched source 1	No actuator architecture confirmed in targeted search This records a searched-but-not-confirmed result. It does not mean a particular architecture is absent. Search checked 2026-09-27 Search result Targeted actuator searches did not confirm an exact-variant architecture claim for this record; this does not mean none exists. Searched source 1	—
Warranty (shortest–longest)	no sourced value	no sourced value	no sourced value
Order type	preorder⁹ Not reviewed The cited source has not been reviewed for this specific claim.	no sourced value	unknown on one side
Latest price	248,000Bumblebee base pre-sale configuration · CNY · 2025-08-01¹⁰ Not reviewed The cited source has not been reviewed for this specific claim.	no sourced value	unknown on one side
Announced	2024-10-21¹¹ Not reviewed The cited source has not been reviewed for this specific claim.	2025-04-19¹² Not reviewed The cited source has not been reviewed for this specific claim.	+6 mo
Recorded first customer delivery	no sourced value	no sourced value	no sourced value
Recorded delivery status	Recorded demonstrated	Recorded demonstrated	—
Results under fixed rules	—	2 results, best rank #1	—

Capabilities

Capabilities table
Capability	Shanghai Kepler Robotics Co., Ltd. Forerunner K2	X-Humanoid (Beijing Humanoid Robot Innovation Center) Tiangong Ultra
Continuous operation (1h+)	?¹³ Source unavailable The cited source could not be accessed during review. Reason The per-host request budget was reached during the review, so the source content and claim could not be re-established. Checked 2026-09-27 Review method Text review Media type Article Publisher relation Independent source	—

Notes

30 kg (66 lbs) (accessed 2026-09-20) — source
1-hour charge, 8-hour operation (accessed 2026-09-20) — source
175 cm (5 ft 9 in) (accessed 2026-09-20) — source
Standing approximately 1.80 m tall (accessed 2026-09-21) — source
75 kg (165 lbs) (accessed 2026-09-20) — source
weighing around 52–55 kg (accessed 2026-09-21) — source
52 total; hands feature up to 11 DOF per hand (active and passive) (accessed 2026-09-20) — source
improved gait planning and control algorithms have enhanced K2's stability against external disturbances and its walking speed (accessed 2026-09-21) — source
World's first commercially available planetary roller screw-driven humanoid robot (accessed 2026-09-21) — source
Pre-sales launched with three configurations starting at ¥248,000 (accessed 2026-09-20) — source
The Forerunner K2 represents the Gen 5.0 robot model, showcasing a seamless integration of the humanoid robot's cerebral, cerebellar, and high-load body functions. (accessed 2026-09-20) — source
The 'Tiangong Ultra' humanoid robot wins the world's first humanoid robot half marathon in Beijing, China, April 19, 2025. (accessed 2026-09-21) — source
1-hour charge, 8-hour operation (accessed 2026-09-20) — source

Cite this comparison: https://humanoidrecord.com/compare/kepler-k2-vs-x-humanoid-tiangong-ultra/ (data snapshot 2026-11-03)

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