Robot dossier
Alex
Release
Nov 19, 2025
Price
Price TBA
Connectivity
1
Status
Prototype
Weight
Estimated 85 kg with battery
IHMC Alex is a next-generation humanoid research robot developed by the Florida Institute for Human and Machine Cognition for out-of-lab field testing. Official IHMC material describes Alex as a multi-year, multimillion-dollar Office of Naval Research project that builds on Nadia with in-house hardware design, high-powered custom actuators, outdoor urban-operation controllers, building-exploration behaviors, behavior cloning, simulation work, perception, autonomy, search skills, and VR teleoperation. IHMC says the platform is intended to serve as a human-avatar first responder for hazardous military or disaster-response environments, with an estimated weight of 85 kg including battery. Local WEAR coverage independently reported Alex as an all-custom, all-electric, battery-powered humanoid with arms, legs, a head and neck, and public demos including door traversal and shadow boxing.
Listed price
Price TBA
Research prototype funded through the Office of Naval Research; not commercially offered and no public price has been announced.
Release window
Nov 19, 2025
Current status
Prototype
IHMC
Last verified
Apr 30, 2026
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Technical overview
A fast read on the mechanical profile, sensing package, and platform integrations behind Alex.
Height
Not officially disclosed
Weight
Estimated 85 kg with battery
Dimensions
Not officially disclosed
Battery Life
Not officially disclosed
Charging Time
Not officially disclosed
Max Speed
Not officially disclosed
Operational profile
Capabilities
11
Connectivity
1
Key capabilities
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The Alex is a Humanoid robot built by IHMC. IHMC Alex is a next-generation humanoid research robot developed by the Florida Institute for Human and Machine Cognition for out-of-lab field testing. Official IHMC material describes Alex as a multi-year, multimillion-dollar Office of Naval Research project that builds on Nadia with in-house hardware design, high-powered custom actuators, outdoor urban-operation controllers, building-exploration behaviors, behavior cloning, simulation work, perception, autonomy, search skills, and VR teleoperation. IHMC says the platform is intended to serve as a human-avatar first responder for hazardous military or disaster-response environments, with an estimated weight of 85 kg including battery. Local WEAR coverage independently reported Alex as an all-custom, all-electric, battery-powered humanoid with arms, legs, a head and neck, and public demos including door traversal and shadow boxing.
Pricing has not been publicly disclosed — typical for robots still in development. See all IHMC robots on the IHMC page.
Detailed specifications for the Alex
Height
Not officially disclosedAt Not officially disclosed, the Alex is designed to operate in human-scale environments, allowing it to reach countertops, shelves, and interfaces designed for human height.
Weight
Estimated 85 kg with batteryWeighing Estimated 85 kg with battery, the Alex needs to balance mass for stability during bipedal locomotion while remaining light enough for safe human interaction.
Dimensions
Not officially disclosedThe overall dimensions of Not officially disclosed define the robot's physical footprint and determine what spaces it can navigate and what clearances it requires for operation.
Battery Life
Not officially disclosedWith a battery life of Not officially disclosed, the Alex can operate for sustained periods before requiring a recharge. Battery life is measured under typical operating conditions and may vary based on workload intensity and environmental factors.
Charging Time
Not officially disclosedA charging time of Not officially disclosed means the ratio of operation to downtime is an important consideration for applications requiring near-continuous availability. Some deployments use multiple robots in rotation to maintain uninterrupted service.
Maximum Speed
Not officially disclosedA top speed of Not officially disclosed approximates human walking pace, enabling the robot to keep up with people in shared environments.
The Alex uses Research autonomy stack for outdoor urban operations, building exploration, search behaviors, behavior cloning, simulation, perception, and VR teleoperation; exact compute and model details have not been officially disclosed. as its intelligence backbone. This AI platform powers the robot's decision-making, perception processing, and autonomous behavior. The sophistication of the AI stack directly impacts how well the robot handles unexpected situations and adapts to new environments.
The Alex integrates 2 sensor types, forming the perceptual foundation that enables autonomous operation.
This sensor configuration enables the Alex to perceive its 3D environment, recognize objects and people, navigate complex spaces, and perform precise manipulation tasks. Multiple sensor modalities provide redundancy and more robust perception than any single sensor type alone.
Explore sensor technologies: components glossary · full components directory
Humanoid robots are designed for environments built for humans — warehouses, factories, healthcare facilities, and eventually homes. Their bipedal form allows them to navigate stairs, doorways, and workspaces designed for human bodies without requiring environmental modifications.
The Alex offers 11 distinct capabilities, each contributing to the robot's practical utility.
These capabilities work together with the robot's 2 onboard sensor types and Research autonomy stack for outdoor urban operations, building exploration, search behaviors, behavior cloning, simulation, perception, and VR teleoperation; exact compute and model details have not been officially disclosed. AI platform to deliver practical, real-world performance.
11
Capabilities
2
Sensor Types
AI
Research autonomy stack for …
How the Alex communicates with your network, smart home devices, cloud services, and companion apps.
The Alex by IHMC integrates 4 distinct technology components across sensing, connectivity, intelligence, and interaction layers. The physical platform features a height of Not officially disclosed, a weight of Estimated 85 kg with battery, a top speed of Not officially disclosed, providing the foundation on which this technology stack operates.
The perception layer is built on Perception sensors (official sensor suite not disclosed), VR teleoperation and behavior-research stack. These work in concert to give the robot a detailed understanding of its operating environment. This multi-sensor approach provides redundancy and enables the robot to function reliably even when individual sensors encounter challenging conditions such as low light, reflective surfaces, or cluttered spaces.
For communications, the Alex relies on Not officially disclosed. This connectivity stack ensures the robot can communicate with cloud services, local smart home devices, mobile apps, and other networked systems in its environment.
Research autonomy stack for outdoor urban operations, building exploration, search behaviors, behavior cloning, simulation, perception, and VR teleoperation; exact compute and model details have not been officially disclosed. serves as the computational brain, processing sensor data, making navigation decisions, and orchestrating the robot's autonomous behaviors. The quality of this AI platform directly influences how well the robot handles novel situations, adapts to changes in its environment, and improves its performance over time through learning.
Humanoid robots are typically targeted at enterprise customers, research institutions, and forward-thinking businesses looking to automate tasks that require human-like form and dexterity. While some models are approaching consumer pricing, the majority remain in the commercial and industrial space.
When evaluating a humanoid robot, payload capacity, degrees of freedom, and manipulation dexterity are critical factors. Battery life and charging time determine operational uptime. The AI platform determines how well the robot can adapt to new tasks and environments. Consider whether the robot needs to work alongside humans (requiring safety certifications) or will operate independently.
Pricing
The Alex is currently in the prototype stage. It is not yet available for purchase, and specifications may change before the final product is released.
Engineering compromises and where this humanoid robot excels
With 11 distinct capabilities, the Alex is designed as a versatile platform rather than a single-task device. This breadth means the robot can handle varied scenarios and workflows, reducing the need for multiple specialized robots and increasing its utility across different situations.
With 2 sensor types, the Alex takes a minimalist approach to perception. While this keeps costs down and reduces complexity, it may limit the robot's ability to handle edge cases or operate in environments that demand multi-modal awareness. Buyers should verify that the available sensors cover their specific use-case requirements.
At Estimated 85 kg with battery, the Alex is a substantial piece of equipment. This weight contributes to stability and robustness but also means the robot requires careful consideration of floor load limits, transportation logistics, and the potential impact force in the event of unexpected contact with people or objects.
IHMC has not published a public price for the Alex. While common for enterprise-class robotics, the absence of transparent pricing can complicate budgeting and comparison shopping. Prospective buyers will need to engage directly with the manufacturer for quotes, which may vary by configuration and volume.
The Alex is not yet available as a finished, shipping product. Specifications may change before commercial release, and timelines for availability are subject to revision. Early adopters should account for this uncertainty in their planning.
No specific smart home or ecosystem compatibility is listed for the Alex. This does not necessarily mean the robot lacks integration options — the information may not yet be published — but buyers who rely on specific platforms (Apple HomeKit, Google Home, Amazon Alexa, etc.) should verify compatibility before purchasing.
Note: This strengths and trade-offs assessment is based on the Alex's documented specifications as tracked in the ui44 database. Real-world performance depends on deployment conditions, firmware maturity, and environmental factors. For the most current information, check the IHMC manufacturer page or visit the official product page. Use the comparison tool to evaluate these trade-offs against competing robots in the same category.
Understanding the engineering behind this category
Humanoid robots represent one of the most technically ambitious categories in robotics. Building a machine that walks, balances, manipulates objects, and interacts naturally with humans requires breakthroughs across multiple engineering disciplines simultaneously. Understanding the technology behind humanoid robots helps buyers and enthusiasts appreciate both the capabilities and limitations of current systems.
Humanoid robots navigate using a combination of visual SLAM (Simultaneous Localization and Mapping), depth sensing, and inertial measurement. Unlike wheeled robots that simply avoid obstacles, humanoids must plan footstep placement, maintain dynamic balance on uneven surfaces, and anticipate terrain changes. Advanced systems use predictive models to plan several steps ahead, similar to how humans unconsciously adjust their gait when approaching stairs or rough ground. The computational requirements for real-time bipedal navigation are substantial, often requiring dedicated motion-planning processors separate from the main AI system.
Artificial intelligence in humanoid robots serves multiple roles: high-level task planning (understanding what needs to be done), perception (recognizing objects, people, and environments), manipulation planning (figuring out how to grasp and move objects), and social interaction (understanding speech, gestures, and context). Modern humanoids increasingly use large language models and vision-language models for task understanding, allowing them to interpret natural language instructions and generalize to new tasks without explicit programming for each scenario.
The sensor suite in a humanoid robot must provide comprehensive environmental awareness while maintaining real-time processing speeds. Sensor fusion algorithms combine data from cameras, LiDAR, depth sensors, force/torque sensors, and IMUs to create a unified model of the robot's surroundings. This multi-modal perception is critical because no single sensor type works perfectly in all conditions — cameras struggle in darkness, LiDAR cannot distinguish materials, and touch sensors only detect what the robot physically contacts. By combining these inputs, the robot achieves more robust and reliable perception than any individual sensor could provide.
Battery technology is one of the primary limiting factors for humanoid robots. Bipedal locomotion is inherently energy-intensive — maintaining balance requires constant motor activity even when standing still. Current lithium-ion battery packs typically provide two to four hours of active operation, with charging times that can match or exceed operational time. Research into more efficient actuators, energy-harvesting techniques, and advanced battery chemistries aims to extend operational windows. Some commercial deployments address this limitation through battery-swap systems or scheduled charging rotations.
Safety in humanoid robotics is paramount because these robots operate in close proximity to humans. Design approaches include compliant actuators that absorb impact forces, real-time collision prediction systems, force-limited joints that automatically reduce power when unexpected contact occurs, and emergency stop mechanisms accessible to nearby humans. International safety standards like ISO 13482 for personal care robots provide frameworks for evaluating safety, but the field is still developing standards specific to general-purpose humanoid systems. Buyers should inquire about safety testing, certifications, and the robot's behavior in failure modes.
The humanoid robotics field is advancing rapidly on multiple fronts. Improvements in foundation models are enabling more generalizable intelligence. New actuator designs are making robots lighter and more efficient. Manufacturing scale is driving down costs. Over the next several years, expect humanoid robots to transition from controlled industrial environments to more varied commercial and eventually residential settings. The convergence of better AI, cheaper hardware, and proven deployment experience will accelerate adoption across industries.
The Alex by IHMC incorporates many of these technology pillars. For a detailed look at the specific sensors and components used in the Alex, see the sensor analysis and connectivity sections above, or browse the complete components glossary for explanations of every technology used across the robotics industry.
How this robot compares in the humanoid landscape
IHMC has not publicly disclosed pricing for the Alex, which is typical for enterprise-focused robotics platforms that offer customized solutions and direct-sales relationships.
With 2 sensor types, the Alex takes a focused approach to perception, prioritizing the sensor modalities most relevant to its specific tasks rather than carrying a broad general-purpose sensor array.
As a robot still in prototype, the Alex represents IHMC's vision for where humanoid robotics is heading. Specifications may evolve before commercial release, and early performance demonstrations should be evaluated with this context in mind.
Side-by-side specs, capability overlap analysis, and key differentiators.
For the full picture of IHMC's portfolio and market strategy, visit the IHMC manufacturer page.
What the public profile tells you, and what still needs direct vendor confirmation
From a buying and rollout perspective, the Alex should be read as a humanoid platform aimed at human-scale workplaces and pilot automation programs. ui44 currently tracks 11 capability signals, 2 sensor inputs, and a last verification date of 2026-04-30. That mix gives buyers a useful first-pass picture, but it is still only the public layer of due diligence, especially when procurement, uptime, and support commitments are decided directly with IHMC.
Commercial model
Quote-based sales
Research prototype funded through the Office of Naval Research; not commercially offered and no public price has been announced.. That usually means the final commercial package depends on deployment scope, services, or negotiated terms.
Integration posture
1 connectivity option
The profile lists Not officially disclosed, plus Research autonomy stack for outdoor urban operations, building exploration, search behaviors, behavior cloning, simulation, perception, and VR teleoperation; exact compute and model details have not been officially disclosed. as the AI stack. That is enough to infer the basic network posture, but buyers should still confirm APIs, fleet management, and workflow integration details. ui44 does not yet list formal compatibility targets for this robot.
Spec disclosure
1/7 core specs public
ui44 currently has 1 of 7 core physical and operating specs filled in for this model, leaving 6 gaps that matter for deployment planning. Missing runtime, charge, speed, or payload details can materially change staffing and site-readiness assumptions.
The current profile is useful for scouting, but it still leaves meaningful operational unknowns. If this robot is heading toward a pilot or purchase discussion, the next step should be a structured vendor Q&A that fills the remaining runtime, charging, payload, safety, or integration blanks before anyone builds ROI assumptions around it.
If you want a faster apples-to-apples read, compare the Alex against nearby alternatives in ui44's compare view, then cross-check the underlying AI, sensor, and subsystem terms in the components glossary. For manufacturer-level context, the IHMC profile helps anchor this robot inside the wider product lineup.
Practical guide from day one through years of ownership
Setting up a humanoid robot is substantially more involved than plug-and-play consumer devices. Expect a professional installation or guided setup process that includes physical unpacking and assembly (if shipped disassembled), initial calibration of joints and sensors, environment mapping and safety zone definition, network and cloud service configuration, and application-specific programming or task teaching. Plan for several hours to a full day of setup time, and budget for potential integration consulting if the robot needs to connect with existing systems. The manufacturer or a certified integrator should provide training on safe operation, emergency procedures, and basic troubleshooting.
Humanoid robots require regular maintenance to ensure safe and reliable operation. Monthly maintenance typically includes visual inspection of joints and actuators for wear, sensor cleaning (especially cameras and LiDAR), firmware and software updates, battery health checks, and calibration verification. Quarterly maintenance may include more thorough mechanical inspection, lubrication of moving parts, and performance benchmarking to detect gradual degradation. Keep a maintenance log and follow the manufacturer's recommended schedule precisely — humanoid robots are complex systems where small issues can cascade if not addressed promptly.
Humanoid robot software is evolving rapidly, and regular updates can significantly improve performance, add new capabilities, and patch security vulnerabilities. Most manufacturers provide over-the-air updates, but enterprise deployments may require staging and testing updates before rolling them out. Evaluate the manufacturer's update track record — frequent, well-documented updates indicate active development and long-term commitment. Be aware that major software updates may require recalibration or retraining of custom behaviors.
To maximize the useful life of a humanoid robot, avoid operating beyond specified payload limits, maintain a controlled environment (temperature, humidity), keep sensors clean and unobstructed, and address any unusual sounds or behaviors promptly. Battery longevity is improved by avoiding deep discharges and extreme temperatures during charging. Investing in a service contract with the manufacturer or a certified partner provides access to replacement parts and expertise that can extend the robot's productive life significantly beyond the standard warranty period.
For IHMC-specific support resources and documentation, visit the IHMC page on ui44 or check the manufacturer's official website at IHMC's product page.
All Alex data on ui44 is verified against official IHMC sources, including spec sheets, product pages, and press releases. Last verified: 2026-04-30. Official source: IHMC product page. If you find outdated or incorrect information, please let us know — accuracy is our top priority.
See how the Alex stacks up — compare specs, browse the humanoid category, or search the full database.