HumanoidSanctuary AI2023CA

Phoenix

Name: Phoenix
Brand: Sanctuary AI

General-purpose humanoid with hydraulic dexterous hands, controlled by Sanctuary's Carbon AI system. In June 2026 Sanctuary refocused on selling its Physical AI software for third-party robots, keeping Phoenix as a research/data platform.

researchNot for saleL0 Indexednot buildable

Difficulty index

9.0/13

9.0

Index breakdown
Class	humanoid	+5
Cost	unknown · midpoint	+1.5
DOF	unknown · midpoint	+1.5
Parts	unknown · midpoint	+1

How the index works

Top of the ladder. This robot lives on the humanoid domains.

humanoidrobots.systems/sanctuary/phoenix ↗
Full spec sheet and comparisons
humanoidrobot.build/sanctuary/phoenix
Closed hardware; no public CAD or BOM.
humanoidrobots.training/sanctuary/phoenix
No public URDF or MJCF.

Specimen photographs

2 items

Sanctuary AI Unveils the Next Generation of AI RoboticsSanctuary AI · official video, embedded · source
Sanctuary AI - Phoenix at Human-Equivalent SpeedSanctuary AI · official video, embedded · source

Spec card

8/13 known

Height: 170 cm
Mass: 70 kg
Payload: 25 kg
Speed: 1.3 m/s
Price: not for sale
Actuators: Hydraulic hands (20 DOF total across both hands)
Compute: Carbon AI control system
Sensors: Haptic sensing in hands

Not in the registry: degrees of freedom, runtime, battery, bom total, part count. Left blank rather than guessed.

What you learn building it

+Whole-body controlclass: humanoid
+Dozens of actuators on one busclass: humanoid
+Balance and fall handlingclass: humanoid
+Safe bring-up of a full-size machineclass: humanoid

Openness

0/100

not publicCAD
not publicBOM
not publicFirmware
not publicSim model
not publicSoftware
not publicPolicies

Score 0/100 computed from what is public: CAD 25, BOM 20, sim 20, firmware 15, software 10, policies 10.

Repos & models

Site

Build it

Closed hardware; no public CAD or BOM.

humanoidrobot.build/sanctuary/phoenix · Closed hardware; no public CAD or BOM.

Simulate

humanoidrobots.training/sanctuary/phoenix

No public URDF or MJCF.

Next rung

None. This is the top. Find people building it on humanoidrobots.team.

This is the top of the ladder.

NoteSpecs from the May 2023 launch (5'7", 155 lb, 55 lb payload, 3 mph). Later generations (7th, 8th) announced. June 2026 pivot to software reported by secondary sources.

Sources

[1]Sanctuary AI - Phoenix unveilingchecked 2026-09-24
[2]RoboZaps - 2026 status/pivotchecked 2026-09-24