Side-by-side comparison of PETRA (MetraLabs) and S100 (Shanghai Keenon Robotics Co., Ltd.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Warehousing & Logistics buyers. Priority specs lifted to the top and marked with a target.
Manufacturer Country

Year First Available

Verified Deployments

Price Range (USD)

Battery / Shift Runtime

Availability Status

Payload

Robot Weight

Compartment Type

Navigation Type

Battery Runtime

Charge Time

Auto Docking

Fleet Management

Floor Compatibility

Price (USD)

![]() | ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | — | China |
| Year First Available (values differ) | 2013 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | Contact for quote | $26,000 |
| Battery / Shift Runtime (priority for Warehousing & Logistics buyers) (values differ) | — | 8 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical | ||
| Payload (priority for Warehousing & Logistics buyers) (values differ) | — | 100 kg |
| Robot Weight (values differ) | — | 87.5 kg |
| Compartment Type (values differ) | open trays | — |
| Navigation & Safety | ||
| Navigation Type (values differ) | lidar slam,natural landmark | slam |
| Power | ||
| Battery Runtime (priority for Warehousing & Logistics buyers) (values differ) | — | 8 hrs |
| Charge Time (values differ) | — | 2.5 hrs |
| Auto Docking (values differ) | Yes | — |
| Integration | ||
| Fleet Management (values differ) | centralized cloud | — |
| Floor Compatibility (values differ) | hard floor | — |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $26,000 |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Tray Count, Dimensions, IP Rating, Max Speed, Min Passable Width, Hot-Swap Battery, Elevator API, PMS / POS Integration, Display Size, Voice Interaction, Noise Level, Languages Supported, RaaS / Month, Warranty
Frequently asked
PETRA is made by MetraLabs. S100 is made by Shanghai Keenon Robotics Co., Ltd., based in CN.
PETRA scores 0/100. S100 scores 57/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
Both robots are classified as Hospitality Service on Robolist. Filters and ranking treat them as direct alternatives.
Hardware cost is one input. Hospitality Service TCO also includes integration, training, downtime, and end-of-life. Our breakdown: Service Robot TCO Across Hotels, Restaurants, Retail, and Senior Care.
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Service Robot SLAs and Contract Red Flags.
Going deeper — picking the right robot
Service Robot TCO Across Hotels, Restaurants, Retail, and Senior Care
9 min readService Robots
Service Robot SLAs and Contract Red Flags
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Service Robot Pilot: A 60-Day Evaluation Framework
10 min readService 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
PETRA vs S100 compares two robots in the hospitality-service 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.