IHMC says Alex carries computation, perception and power onboard, and uses custom quasi-direct-drive actuators. This does not establish offline behaviour for every feature.
Source 2○ Not tested by ROBODROMO yetHumanoids
IHMC Alex
A research humanoid for exploring movement in difficult places. It suits specialist teams; a walking demonstration is not proof of routine building inspection or independent work.
Weight85 kg, maker figureSource 1
Battery duration2+ hours, maker figure; workload unspecifiedSource 1
Joints29Source 2
ActuationCustom quasi-direct-drive actuators with cycloidal transmissionsSource 2
Recorded specifications, with their source limits. These are not our measurements. See all specifications and configurations
Price and availability
No current delivered price or availability has been confirmed here. Ask for a dated quote for the exact package.
Image and credit
Manufacturer image and sourceTest track0 attempts run
We have not physically tested this robot. The task plan below is a starting point, subject to the exact unit and supported functions.
See the proposed test trackOn the ROBODROMO
test track
Three proposed tasks. Ten attempts at each suitable task, with the outcome, time and human help recorded. Confirm the exact robot, software and safe setup first. These tasks are not evidence that this robot can do them.
Complete one documented movement or manipulation task
Proposed task. 0 of 10 attempts run.
Repeat the task from the same starting setup
Proposed task. 0 of 10 attempts run.
Record all help needed to start and finish
Proposed task. 0 of 10 attempts run.
Pick a square to see what each attempt will record.
We will record the outcome, time, control mode, human help, safety stops, exact hardware and software, conditions and full video.
Proposed attempt; not run Only proceed if the exact unit supports the task and the setup is suitable. Keep remote control, scripted operation and autonomous operation separate. A completed attempt alone does not prove autonomy.What each square will show
Finished without extra helpNeeded a person’s helpFailedNot run yet
Keep the conditions visible
Name the control mode, surface, object or prompt and every intervention. Ten attempts are an initial result, not proof of long-term reliability.
Read our proposed test methodHow much do we really
know?
Separate our own tests from published claims and the limits of the evidence. The counts below describe records, not performance or confidence scores.
Tested by ROBODROMO
We have not physically tested this robot. No performance score or measured attempt is available.
See the proposed test track01 / The assessment
What the evidence supports.
Capability and readiness are separate. These written findings are not a numerical rating or a physical test.
Capability
What can it actually do?
The specific maker claims and any independent observations are listed below. We have not run our own task tests on this robot.
Read the source-based assessmentReadiness
Could you use it in real life?
Intended use: Off-site humanoid walking. Dependable everyday use has not been established by the evidence reviewed. Off-tether does not mean autonomous. Nadia demonstrations and hardware cannot be assigned to Alex.
Read the source-based assessmentA clear limit
This is a research profile based on the sources below, not a hands-on test. Maker claims remain attributed to the maker; they do not prove repeatable performance in your home or workplace.
02 / Can it actually do it?
The claims, with their context.
The wording below keeps each source’s limits. A demonstration, a maker’s claim and a repeatable real-world result are different things.
IHMC reports an off-site, off-tether Maryland demonstration for ONR in which Alex walked on rocky gravel, slick surfaces and uneven pavement. Trial counts, control mode, operator assistance and recovery are not disclosed.
Source 3Approaching and opening a building door and assessing the interior are design goals in the demonstration report, not completed tasks established by it.
Source 3IHMC invites purchase enquiries but gives no public price, delivery terms or defined buyer support on the cited page. An enquiry link does not prove delivery.
Source 1Check the original sources
Every source keeps its original check date. Manufacturer information, research configurations and independent observations have different limits.
Open the source listKnow the exact robot
The name alone may not tell you which hardware, software or support you get. Keep editions and optional equipment separate.
Specifications and configuration
Model detail
Specifications and configuration
Figures below retain their source and configuration limits. Manufacturer specifications are not independent performance results.
85 kg, maker figure
Source 12+ hours, maker figure; workload unspecified
Source 129
Source 2Custom quasi-direct-drive actuators with cycloidal transmissions
Source 2179 cm.
Manufacturer source85 kg.
Manufacturer sourceManufacturer specification: over 1.5 m/s.
Manufacturer sourceManufacturer specification: over two hours, with operating conditions not specified on this page.
Manufacturer sourceManufacturer specification: over 15 kg.
Manufacturer sourceThe exact model and configuration
The exact model
Meet IHMC Alex
Alex is IHMC’s newer bipedal research platform, built on lessons from legacy Nadia. They are separate robots: Nadia demonstrations, hydraulic hardware and capabilities must not be attributed to Alex.
Further assessment notes
Setup, support and daily use
04 / Living with it
Right robot, right expectations.
What ownership could involve
This is a specialist research system. Before any acquisition or trial, establish available configuration and software, operator training, control and connectivity, site safety arrangements, charging and battery handling, support, spares, service intervals and responsibility for transport and repairs. Onboard computing does not settle remote control or data retention. No public price verified; delivery, regional availability and commercial support are unknown.
Support, software and repairs
IHMC provides project information and a purchase-enquiry route. This is a research platform rather than an ordinary consumer appliance. The page does not establish a standard warranty, training package, replacement-parts catalogue or service response time; agree these directly for the intended research setup.
Questions still open
What needs checking before you decide.
- Nadia’s ping-pong, boxing and hydraulic hardware are not Alex evidence.
- The off-tether report does not disclose autonomy or absence of human control.
- Extreme-environment response and building exploration are research goals, not proven operational readiness.
- Published performance figures lack workload and conditions; safety certification is unverified.
See it in action
Our filmed attempts will appear after testing. Existing footage below keeps its original description and limitations.
See the robot
IHMC Alex — manufacturer presentation
Manufacturer-linked presentation for this model. The footage is illustrative; it is not an independent test of reliability, autonomy or the equipment included in your chosen configuration.
Before you buy
Get these answered in writing by the seller. Tick them off as you go.
0 of 6 answered
Your checklist records your progress. A tick is not verification by ROBODROMO.
Sources and checks
A check date tells you when a source was read. It does not mean every claim, price or offer is unchanged today.
Sources and checks
03 / Recorded evidence
The latest checks on file.
Dates below describe the recorded checks. They do not mean the manufacturer’s page was checked today.
- robots.ihmc.us Source checked 2026-10-27
- robots.ihmc.us Source checked 2026-10-27
- ihmc.us Source checked 2026-10-27
-
Manufacturer specifications and support
Official product-page specification and support text; source checked 1cba54987967339990
Source checked 2026-10-31 -
Official page linking this video
Video association checked against the maker page; not a complete playback or performance assessment.
Source checked 2026-10-31
No recorded sources in this filter.
How sure are we?
5 linked sources. Read the claims and their limits below. A source count is not a confidence score.
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