AlphaBot 2 vs Sanbot S1
Side-by-side comparison of AlphaBot 2 (AI² Robotics) and Sanbot S1 (Sanbot Innovation Technology) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Cleaning & Facilities buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- AlphaBot 2China
- Sanbot S1China
Year First Available
- AlphaBot 22025
- Sanbot S1—
Verified Deployments
- AlphaBot 20 Deployments
- Sanbot S10 Deployments
Layer 2: Operational
Price
- AlphaBot 2Contact for quote
- Sanbot S1$11,000 USD
Battery / Shift Runtime
- AlphaBot 26 hrs
- Sanbot S118 hrs
Availability Status
- AlphaBot 2ACTIVE
- Sanbot S1ACTIVE
Physical Form Factor
Weight
- AlphaBot 2—
- Sanbot S1100 kg
Height
- AlphaBot 2—
- Sanbot S1848.32 mm
Mobility Type
- AlphaBot 2bipedal
- Sanbot S1static
Humanoid Subtype
- AlphaBot 2full bipedal
- Sanbot S1service humanoid
Walking Speed
- AlphaBot 2—
- Sanbot S15 m/s
Running Capable
- AlphaBot 2static walk
- Sanbot S1—
Stair Climbing
- AlphaBot 2Yes
- Sanbot S1No
Terrain
- AlphaBot 2flat indoor, uneven outdoor
- Sanbot S1home
Payload & Dexterity
Payload
- AlphaBot 2—
- Sanbot S175 kg
Total DOF
- AlphaBot 234
- Sanbot S127
Arm DOF
- AlphaBot 2—
- Sanbot S110
Hand DOF
- AlphaBot 2—
- Sanbot S11x2(L/R) DOF
Arm Reach
- AlphaBot 270 cm
- Sanbot S1—
Manipulation Repeatability
- AlphaBot 2±0.02 mm
- Sanbot S1—
Bimanual Coordination
- AlphaBot 2Yes
- Sanbot S1No
Tool Use
- AlphaBot 2production validated
- Sanbot S1—
Compute & AI
Onboard Compute
- AlphaBot 2Alpha Brain
- Sanbot S1—
Compute Platform
- AlphaBot 2ATMEGA328P-AU (8-bit AVR, 16 MHz)
- Sanbot S1—
VLM Capable
- AlphaBot 2No
- Sanbot S1No
Foundation Models
- AlphaBot 2Alpha Brain GOVLA
- Sanbot S1false
Imitation Learning
- AlphaBot 2No
- Sanbot S1No
Teleoperation
- AlphaBot 2none
- Sanbot S1—
Programming
- AlphaBot 2VLA (Vision-Language-Action)
- Sanbot S1Amazon Alexa
Battery & Power
Runtime
- AlphaBot 26 hrs
- Sanbot S118 hrs
Charging Method
- AlphaBot 2manual swap
- Sanbot S1—
Battery Swap
- AlphaBot 2No
- Sanbot S1No
Safety
Force-Limited Arms
- AlphaBot 2Yes
- Sanbot S1—
Fall Recovery
- AlphaBot 2Yes
- Sanbot S1—
Human Detection Method
- AlphaBot 2multi modal
- Sanbot S1—
Safe Speed Near Humans
- AlphaBot 2none
- Sanbot S1—
Software
SDK Languages
- AlphaBot 2Python, ROS2
- Sanbot S1none
ROS Support
- AlphaBot 2ros2 vendor
- Sanbot S1No
Open API
- AlphaBot 2open rest websocket
- Sanbot S1No
Air-Gap Capable
- AlphaBot 2Yes
- Sanbot S1—
Reliability
Deployment Maturity
- AlphaBot 2commercial
- Sanbot S1commercial
Commercial
Price (USD)
- AlphaBot 2Contact for quote
- Sanbot S1$11,000 USD
Price Tier
- AlphaBot 2150K+
- Sanbot S1—
Pricing Model
- AlphaBot 2capex, pilot_fee
- Sanbot S1—
Production Pilots
- AlphaBot 2Huaxi Bio (华熙生物)
- Sanbot S1—
Applications
- AlphaBot 2assembly, inspection, warehouse_transport, hospitality
- Sanbot S1healthcare, education, hospitality, public_service
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | China | China |
| Year First Available (values differ) | 2025 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | Contact for quote | $11,000 USD |
| Battery / Shift Runtime (priority for Cleaning & Facilities buyers) (values differ) | 6 hrs | 18 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Weight (priority for Cleaning & Facilities buyers) (values differ) | — | 100 kg |
| Height (values differ) | — | 848.32 mm |
| Mobility Type (values differ) | bipedal | static |
| Humanoid Subtype (values differ) | full bipedal | service humanoid |
| Walking Speed (values differ) | — | 5 m/s |
| Running Capable (values differ) | static walk | — |
| Stair Climbing (values differ) | Yes | No |
| Terrain (values differ) | flat indoor, uneven outdoor | home |
| Payload & Dexterity | ||
| Payload (values differ) | — | 75 kg |
| Total DOF (values differ) | 34 | 27 |
| Arm DOF (values differ) | — | 10 |
| Hand DOF (values differ) | — | 1x2(L/R) DOF |
| Arm Reach (values differ) | 70 cm | — |
| Manipulation Repeatability (values differ) | ±0.02 mm | — |
| Bimanual Coordination (values differ) | Yes | No |
| Tool Use (values differ) | production validated | — |
| Compute & AI | ||
| Onboard Compute (values differ) | Alpha Brain | — |
| Compute Platform (values differ) | ATMEGA328P-AU (8-bit AVR, 16 MHz) | — |
| VLM Capable | No | No |
| Foundation Models (values differ) | Alpha Brain GOVLA | false |
| Imitation Learning | No | No |
| Teleoperation (values differ) | none | — |
| Programming (values differ) | VLA (Vision-Language-Action) | Amazon Alexa |
| Battery & Power | ||
| Runtime (values differ) | 6 hrs | 18 hrs |
| Charging Method (values differ) | manual swap | — |
| Battery Swap | No | No |
| Safety | ||
| Force-Limited Arms (values differ) | Yes | — |
| Fall Recovery (values differ) | Yes | — |
| Human Detection Method (values differ) | multi modal | — |
| Safe Speed Near Humans (values differ) | none | — |
| Software | ||
| SDK Languages (values differ) | Python, ROS2 | none |
| ROS Support (values differ) | ros2 vendor | No |
| Open API (values differ) | open rest websocket | No |
| Air-Gap Capable (values differ) | Yes | — |
| Reliability | ||
| Deployment Maturity | commercial | commercial |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $11,000 USD |
| Price Tier (values differ) | 150K+ | — |
| Pricing Model (values differ) | capex, pilot_fee | — |
| Production Pilots (values differ) | Huaxi Bio (华熙生物) | — |
| Applications (values differ) | assembly, inspection, warehouse_transport, hospitality | healthcare, education, hospitality, public_service |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Payload (Peak), Grip Strength, Battery Capacity, Charging Time, Avg Power Consumption, Fall Detection Response, Emergency Stops, Simulation Platforms, MTBF, Task Success Rate, IP Rating, Noise Level, RaaS / Month, Developer Unit Price, Delivery Lead Time, Warranty
ROI Comparison
Same operating assumptions across every robot — the only difference is price. Set your numbers once to see which pays back fastest.
Annual labor displaced (per robot): $50,000
| Metric | AlphaBot 2 | Sanbot S1 |
|---|---|---|
| Investment | No price | $11,000 |
| Payback period | — | 2.6 mo |
| Net savings (5 yr) | — | $239,000 |
| ROI (5 yr) | — | +2173% |
AlphaBot 2 has no listed price, so payback can't be computed. Contact the manufacturer for a quote.
Estimates labor-cost displacement only — not a full total cost of ownership. Actual ROI depends on integration, maintenance, training, downtime, and task fit. Converted currencies are indicative; USD is the price of record.
Trade-offs at a glance
Frequently asked
Who makes AlphaBot 2 and Sanbot S1?
AlphaBot 2 is made by AI² Robotics, based in CN. Sanbot S1 is made by Sanbot Innovation Technology, based in CN.
How do AlphaBot 2 and Sanbot S1 compare on the Robo Index?
AlphaBot 2 grades AA on the Robo Index. Sanbot S1 grades BBB. The Robo Index is a credibility grade (AAA … C) that blends commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
Are AlphaBot 2 and Sanbot S1 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 AlphaBot 2 and Sanbot S1?
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
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About this comparison
AlphaBot 2 vs Sanbot S1 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 Robo Index is calculated.