Alpha 1S vs Cassie Blue
Side-by-side comparison of Alpha 1S (UBTECH Robotics Corp Ltd.) and Cassie Blue (Agility Robotics, Inc.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
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Optimized for Warehousing & Logistics buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- Alpha 1SChina
- Cassie BlueUnited States
Year First Available
- Alpha 1S2013
- Cassie Blue2009
Verified Deployments
- Alpha 1S0 Deployments
- Cassie Blue0 Deployments
Layer 2: Operational
Price Range (USD)
- Alpha 1S$3,999
- Cassie BlueContact for quote
Battery / Shift Runtime
- Alpha 1S1 hrs
- Cassie Blue—
Availability Status
- Alpha 1SACTIVE
- Cassie BlueACTIVE
Physical Form Factor
Height
- Alpha 1S59 mm
- Cassie Blue182.88 mm
Weight
- Alpha 1S4 kg
- Cassie Blue55 kg
Mobility Type
- Alpha 1Sbipedal
- Cassie Bluebipedal
Humanoid Subtype
- Alpha 1Sservice humanoid
- Cassie Blueresearch platform
Walking Speed
- Alpha 1S—
- Cassie Blue3 m/s
Running Capable
- Alpha 1S—
- Cassie Bluerun capable
Stair Climbing
- Alpha 1SNo
- Cassie BlueYes
Terrain
- Alpha 1Sflat indoor
- Cassie Bluesnow, rocks, stairs
Payload & Dexterity
Total DOF
- Alpha 1S20
- Cassie Blue10
Arm DOF
- Alpha 1S3
- Cassie Blue—
Bimanual Coordination
- Alpha 1SNo
- Cassie Blue—
Compute & AI
Onboard Compute
- Alpha 1SRM 32位 Cortex-A7 CPU: 900MHz
- Cassie BluePC mounted on the upper body
VLM Capable
- Alpha 1SNo
- Cassie Blue—
Foundation Models
- Alpha 1Sfalse
- Cassie Blue—
Imitation Learning
- Alpha 1SNo
- Cassie Blue—
Programming
- Alpha 1Smodular programming
- Cassie Blue—
Battery & Power
Runtime
- Alpha 1S1 hrs
- Cassie Blue—
Battery Swap
- Alpha 1SNo
- Cassie Blue—
Software
SDK Languages
- Alpha 1SChinese
- Cassie Blue—
ROS Support
- Alpha 1SNo
- Cassie Blue—
Open API
- Alpha 1SNo
- Cassie Blue—
Reliability
Deployment Maturity
- Alpha 1Scommercial
- Cassie Blueprototype
Commercial
Price (USD)
- Alpha 1S$3,999
- Cassie BlueContact for quote
Price Tier
- Alpha 1S40-80K
- Cassie Blue—
Pricing Model
- Alpha 1Spurchase
- Cassie Blue—
Applications
- Alpha 1S娱乐
- Cassie Blueresearch
| ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | China | United States |
| Year First Available (values differ) | 2013 | 2009 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $3,999 | Contact for quote |
| Battery / Shift Runtime (priority for Warehousing & Logistics buyers) (values differ) | 1 hrs | — |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 59 mm | 182.88 mm |
| Weight (values differ) | 4 kg | 55 kg |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype (values differ) | service humanoid | research platform |
| Walking Speed (values differ) | — | 3 m/s |
| Running Capable (values differ) | — | run capable |
| Stair Climbing (values differ) | No | Yes |
| Terrain (values differ) | flat indoor | snow, rocks, stairs |
| Payload & Dexterity | ||
| Total DOF (values differ) | 20 | 10 |
| Arm DOF (values differ) | 3 | — |
| Bimanual Coordination (values differ) | No | — |
| Compute & AI | ||
| Onboard Compute (values differ) | RM 32位 Cortex-A7 CPU: 900MHz | PC mounted on the upper body |
| VLM Capable (values differ) | No | — |
| Foundation Models (values differ) | false | — |
| Imitation Learning (values differ) | No | — |
| Programming (values differ) | modular programming | — |
| Battery & Power | ||
| Runtime (values differ) | 1 hrs | — |
| Battery Swap (values differ) | No | — |
| Software | ||
| SDK Languages (values differ) | Chinese | — |
| ROS Support (values differ) | No | — |
| Open API (values differ) | No | — |
| Reliability | ||
| Deployment Maturity (values differ) | commercial | prototype |
| Commercial | ||
| Price (USD) (values differ) | $3,999 | Contact for quote |
| Price Tier (values differ) | 40-80K | — |
| Pricing Model (values differ) | purchase | — |
| Applications (values differ) | 娱乐 | research |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Payload, Payload (Peak), Hand DOF, Arm Reach, Grip Strength, Manipulation Repeatability, Tool Use, Compute Platform, Teleoperation, Battery Capacity, Charging Time, Charging Method, Avg Power Consumption, Force-Limited Arms, Fall Recovery, Fall Detection Response, Emergency Stops, Human Detection Method, Safe Speed Near Humans, Simulation Platforms, Air-Gap Capable, MTBF, Task Success Rate, IP Rating, Noise Level, RaaS / Month, Developer Unit Price, Delivery Lead Time, Warranty, Production Pilots
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes Alpha 1S and Cassie Blue?
Alpha 1S is made by UBTECH Robotics Corp Ltd., based in CN. Cassie Blue is made by Agility Robotics, Inc., based in US.
When were Alpha 1S and Cassie Blue launched?
Alpha 1S launched in 2013. Cassie Blue launched in 2009.
How do Alpha 1S and Cassie Blue compare on the Robolist Product Score?
Alpha 1S scores 38/100. Cassie Blue scores 44/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
Are Alpha 1S and Cassie Blue in the same category?
Both robots are classified as Humanoid on Robolist. Filters and ranking treat them as direct alternatives.
What is the realistic total cost of ownership for Humanoid robots?
Hardware cost is one input. Humanoid TCO also includes integration, training, downtime, and end-of-life. Our breakdown: Humanoid TCO: Hardware, Cloud Subscriptions, and the Cost of Teleop Time.
What should a buyer ask vendors when choosing between Alpha 1S and Cassie Blue?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Vendor Selection for Humanoids: The 10 Questions You Must Ask.
Going deeper — picking the right robot
Humanoid TCO: Hardware, Cloud Subscriptions, and the Cost of Teleop Time
8 min readHumanoid Robots
Vendor Selection for Humanoids: The 10 Questions You Must Ask
10 min readHumanoid Robots
Running a Humanoid Pilot: Scope, Success Criteria, and Exit Options
9 min readHumanoid Robots
Build vs buy vs lease: which model fits a first deployment
8 min readChoosing Your First Robot
The hidden specs vendors hope you'll miss
10 min readReading the Spec Sheet
About this comparison
Alpha 1S vs Cassie Blue compares two robots in the humanoid category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robolist Product Score is calculated.