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HumanoidBoston Dynamics2013US

Atlas (hydraulic)

Hydraulic research humanoid first built for the DARPA Robotics Challenge, later known for parkour and gymnastics demos. Retired April 16, 2024.

discontinuedResearch onlyL0 Indexednot buildable

Difficulty index

9.0/13
9.0
Index breakdown
Classhumanoid+5
Costunknown · midpoint+1.5
DOFunknown · midpoint+1.5
Partsunknown · midpoint+1
How the index works

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

Specimen photographs

5 items
  • Hydraulic Atlas humanoid (2013 DRC version) standing, front view, studio photo
    Via Wikimedia Commons (Public domain).DARPA, via Wikimedia Commons · PublicDomain · source
  • Hydraulic Atlas humanoid standing on a tether during testing
    Via Wikimedia Commons (Public domain).DARPA, via Wikimedia Commons · PublicDomain · source
  • Farewell to HD AtlasBoston Dynamics · official video, embedded · source
  • Atlas | Partners in ParkourBoston Dynamics · official video, embedded · source
  • Inside the lab: How does Atlas work?Boston Dynamics · official video, embedded · source

Spec card

2/13 known
Price
not for sale
Actuators
Hydraulic

Not in the registry: degrees of freedom, height, mass, payload, speed, runtime, battery, bom total, part count, compute, sensors. Left blank rather than guessed.

What you learn building it

  • +Whole-body control
  • +Dozens of actuators on one bus
  • +Balance and fall handling
  • +Safe bring-up of a full-size machine

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

Discontinued.

humanoidrobot.build/bostondynamics/atlas-hydraulic · Closed hardware; no public CAD or BOM.

Simulate

humanoidrobots.training/bostondynamics/atlas-hydraulic

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.

NoteRetirement announced on YouTube Apr 16, 2024; electric Atlas unveiled the next day.

Sources

  1. [1]TechCrunch - retirementchecked 2026-09-24
  2. [2]Wikipedia - Atlaschecked 2026-09-24