# Alex: IHMC Robotics humanoid robot

Canonical ID: `54933f73-12f8-4270-bc6a-783ac4040c27`

- **Slug:** ihmc-alex
- **Form factor:** humanoid ([Humanoids](/humanoids))
- **Maturity stage:** research
- **Lifecycle:** active
- **Deployments registered:** 0

## Specs

- **speed:** 1.5+ m/s
- **height:** 179 cm
- **joints:** 29
- **weight:** 85 kg
- **battery:** 2+ hrs
- **payload (cont.):** 15+ kg

## Deployments

_No deployments registered for this model._

## Supply chain

_No verified supply relationships on file. Supply-chain coverage is being added across the registry; check back as the seed populates this model's suppliers._

_Suppliers appear when verified with at least two strong sources. Sources are append-only; corrections add new sources rather than rewrite history._

## Common questions

### What is Alex?

Alex is the Florida Institute for Human and Machine Cognition's full-size humanoid, built from its [Nadia](/models/nadia-humanoid) platform, with onboard computation, perception, and power for outdoor operation. IHMC's design page says Alex has 29 joints. The Alex specifications page lists height 179 cm, weight 85 kg, speed 1.5+ m/s, battery 2+ hrs, and payload (cont.) 15+ kg. On Sep 11 2026 the U.S. Army named Alex among five xTechHumanoid winners. Distinct from Boardwalk Robotics' upper-body [Alex](/models/alex-humanoid).

### How much does Alex cost?

Alex's price is not publicly disclosed. DEPLOY has no verified price on record for Alex from IHMC Robotics. Physical-AI systems like this are often sold through enterprise contracts or operated as a service rather than at a public list price; check the manufacturer for the latest.

### Is Alex actually deployed in the real world?

Alex is at the research stage: it exists, but DEPLOY has no verified real-world deployment on record. Manufacturer capability claims should be read as claims pending independent verification.

### Who makes Alex?

Alex is made by IHMC Robotics, based in Pensacola, FL, USA.

### Can you buy Alex?

Alex is at research stage and is not yet available for sale.

### What are alternatives to Alex?

On the DEPLOY registry, comparable humanoid robots to Alex include Walker S2, Digit, Unitree G1, Atlas.

### How does Alex compare to Walker S2?

Alex and Walker S2 (UBTech Robotics · 18 deployments) are both humanoid robots on the DEPLOY registry. Alex has 0 verified deployments on record. Compare both records for specs, safety, deployments, and verified-vs-claimed autonomy.

### What is Alex's maturity stage?

Alex is at the research stage on the DEPLOY maturity ladder (research, prototype, pilot, commercial, production). Research stage means active development without commercial deployments on file.

### Where is Alex deployed?

No verified deployments of Alex are currently on the DEPLOY registry. DEPLOY records deployments only when verified at a named site with a primary source; absence may reflect pre-deployment, research, or manufacturer-internal use.


## Sources (5)

1. **Humanoid Robot Design** · https://robots.ihmc.us/humanoid-design
2. **Alex Humanoid specifications** · https://robots.ihmc.us/alex-humanoid
3. **xTechHumanoid Winners Advance Military Exploration of Emerging Humanoid Capabilities** · https://pit.army.mil/update/xtechhumanoid-winners-advance-military-exploration-of-emerging-humanoid-capabilities/ · 2026-09-28
4. **Robotics competition winners advance military exploration of humanoid capabilities** · https://www.army.mil/article/295812/robotics_competition_winners_advance_military_exploration_of_humanoid_capabilities · 2026-09-30
5. **First Place at xTech!** · https://www.linkedin.com/feed/update/urn:li:activity:7506431365924700162

## The verified answers

- [Which humanoid robots are actually working in car factories?](/humanoid-robots-in-car-factories.md)
- [Which humanoid robots can you actually buy in 2026?](/which-humanoid-robots-can-you-actually-buy.md)
- [Humanoid robot prices: every verified figure](/humanoid-robot-prices.md)
- [The tallest humanoid robots](/tallest-humanoid-robot.md)
- [The heaviest humanoid robots](/heaviest-humanoid-robot.md)
- [The fastest humanoid robots](/fastest-humanoid-robot.md)
- [The strongest humanoid robots by payload](/strongest-humanoid-robot.md)
- [Humanoid robot autonomy: verified vs claimed](/humanoid-robot-autonomy-verified.md)
- [What is the cheapest robot you can buy?](/what-is-the-cheapest-robot-you-can-buy.md)
- [Can a robot feel pain?](/can-a-robot-feel-pain.md)
- [Can a robot cry?](/can-a-robot-cry.md)
- [Do robots have rights?](/do-robots-have-rights.md)
- [Which robots can do a backflip?](/which-robots-can-do-a-backflip.md)
- [Which company is the leader in humanoid robotics?](/which-company-leads-humanoid-robotics.md)
- [What is the most advanced humanoid robot in 2026?](/what-is-the-most-advanced-humanoid-robot-in-2026.md)
- [What is Elon Musk's robot?](/what-is-elon-musks-robot.md)
- [Which humanoid robots are banned in the US?](/which-humanoid-robots-are-banned-in-the-us.md)
- [What is the battery life of Optimus?](/what-is-the-battery-life-of-optimus.md)
- [What AI runs humanoid robots?](/what-ai-runs-humanoid-robots.md)
- [Which humanoid robots are deployed in factories?](/which-humanoid-robots-are-deployed-in-factories.md)
- [Which robots are deployed in the most cities](/which-robots-are-deployed-in-the-most-cities.md)
- [Which types of robots are deployed the most](/which-types-of-robots-are-deployed-the-most.md)
- [How fast is humanoid robotics improving?](/how-fast-is-humanoid-robotics-improving.md)
- [Can humanoid robots cook?](/can-humanoid-robots-cook.md)
- [Can humanoid robots do laundry?](/can-humanoid-robots-do-laundry.md)
- [What did Elon Musk promise about robots and when?](/what-did-elon-musk-promise-about-robots.md)
- [Who are the people building humanoid robots?](/who-are-the-people-building-humanoid-robots.md)

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