Compare
Aria vs Stretch 4
Quick verdict
Stretch 4 leads on 9 of 10 comparable rows
Aria leads on Social Interaction. Stretch 4 leads on Readiness Score, Reality Score, Price, and Countries (+5 more).
Who should choose which?
Choose Aria if…
- Your main goal is conversation, which Aria targets directly.
- Strengths like social interaction and perception match how you plan to use it at home.
- You prefer a humanoid form factor over the alternatives in this compare.
Choose Stretch 4 if…
- You want higher readiness (84/100 vs peers) for near-term home use.
- Verified shipping and public proof matter more to you (reality score 80/100).
- Budget is a priority and Stretch 4 lists lower ($29,950).
- Your main goal is home assistant, which Stretch 4 targets directly.
- Strengths like perception and manipulation match how you plan to use it at home.
| Spec | Aria  RealbotixLeads 1 | Stretch 4  Hello RobotLeads 9 |
|---|---|---|
| Performance | ||
| Readiness Score | 74 | 84 |
| Reality Score | 68 | 80 |
| Data Freshness | 100% | 100% |
| Speed | Unknown | 2.2 km/h |
| Payload | Unknown | 2.5 kg (extended) / 4 kg (retracted) |
| Specs | ||
| Height | 175 cm | 160 cm |
| Weight | 54 kg | 46 kg |
| Battery | 4–8 h | 8 h |
| Form | Humanoid | Other |
| Availability | ||
| Price | $125,000+ | $29,950 |
| Market Status | Buy Now | Buy Now |
| Availability | Limited | Limited |
| Countries | United States | United States, Global (direct order) |
| Intelligence | ||
| Mobility | 42 | 82 |
| Manipulation | 52 | 88 |
| Perception | 88 | 90 |
| Autonomy | 58 | 74 |
| Social Interaction | 96 | 58 |
| Home Navigation | 48 | 86 |
| Sensors | Eye-embedded micro cameras (face/object recognition), microphones, proximity sensorsi | 2× hemispherical 3D LiDAR (Hesai), 3× high-res cameras, 6× laser line sensors, wrist depth camera, IMU |
| Connectivity | Wi-Fi (cloud AI APIs); manual RC for wheeled base | Wi-Fi 5.2, Ethernet, USB expansion |
| Ecosystem | Realbotix Robot Controller app ($199.99/mo); OpenAI ChatGPT integration (GPT-4/5 per Realbotix FAQ); Magnetic interchangeable faces and modular body panels; Custom character sculpting from $20,000+; Optional maintenance subscription; 100+ language conversation support; Bring-your-own AI via API (OpenAI, Hugging Face, LM Studio) | ROS 2 Humble; Python SDK; Stretch Body software stack; Optional self-charging dock; Quick-release gripper tooling; Global distributor network (Japan, Korea, China) |
Green cells mark the stronger value in each row across 2 robots.