Side-by-side comparison of Diego-san (UC San Diego, Kokoro, and Hanson Robotics) and Saildrone Explorer (Saildrone Inc.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Last-Mile Delivery buyers. Priority specs lifted to the top and marked with a target.
Manufacturer Country

Year First Available

Verified Deployments

Battery / Shift Runtime

Availability Status

Payload Capacity

Max Speed

Autonomy Level

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|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | United States | United States |
| Year First Available (values differ) | 2010 | 2015 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Battery / Shift Runtime (priority for Last-Mile Delivery buyers) (values differ) | — | 8,760 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Payload Capacity (priority for Last-Mile Delivery buyers) (values differ) | — | 20 kg |
| Max Speed (values differ) | — | 1.5 m/s |
| Autonomy Level (values differ) | — | fully autonomous |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Price Range (USD), Reach, IP Rating
Frequently asked
Diego-san is made by UC San Diego, Kokoro, and Hanson Robotics, based in US. Saildrone Explorer is made by Saildrone Inc., based in US.
Diego-san launched in 2010. Saildrone Explorer launched in 2015.
Diego-san scores 31/100. Saildrone Explorer scores 56/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
Both robots are classified as Research on Robolist. Filters and ranking treat them as direct alternatives.
Hardware cost is one input. Research TCO also includes integration, training, downtime, and end-of-life. Our breakdown: The real cost of a research platform.
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: The research-robot procurement RFP: questions and red flags.
Going deeper — picking the right robot
The real cost of a research platform
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The research-robot procurement RFP: questions and red flags
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A 90-day playbook to stand up a new platform in a lab
8 min readResearch & Lab 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
Diego-san vs Saildrone Explorer compares two robots in the research 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.