Key specs
- Category
- Companion robot dog
- Weight
- About 2.2 kg
- Battery
- About 2 hours
- Ongoing cost
- About $300 a year after year three
- Type
- Companion robot
- Cloud plan
- Included for 3 years, then about $300 a year
- Sold in
- US (Sony announced Japanese sales would end when stock runs out)
Our verdict
Nothing else feels as much like a pet. Factor in the subscription and repair costs over its life, and check Sony's latest support plans given the change in Japan.
What we like
- Most lifelike consumer robot pet
- Small enough for any home
- Designed to develop a personality over time, which owners value
- Small and light enough for any home
- Charging station and toys included in the US bundle
What to know
- Subscription after three years
- Flat indoor floors only
- Ongoing cloud fee after year three, and a lapsed plan can freeze features
- Indoor flat floors only, no stairs or shag carpet
- Owners report repairs go through Sony, with no published repair price list
How it compares
| Spec | Sony aibo (ERS-1000) | Unitree Go2 Pro | Unitree Go2 Air | KEYi Loona |
|---|---|---|---|---|
| Price | from about $2,900 including a 3-year cloud plan | $2,800 plus shipping (Unitree, Oct 2026) | $1,600 plus shipping (Unitree, Oct 2026) | about $499, list $529 |
| Category | Companion robot dog | - | - | Wheeled companion robot |
| Weight | About 2.2 kg | About 15 kg | About 15 kg | - |
| Battery | About 2 hours | - | - | - |
| Ongoing cost | About $300 a year after year three | - | - | - |
| Type | Companion robot | Quadruped robot | Quadruped robot | Wheeled companion robot (pet-like, not dog-shaped) |
| Cloud plan | Included for 3 years, then about $300 a year | - | - | - |
| Sold in | US (Sony announced Japanese sales would end when stock runs out) | - | - | - |
| Battery life | - | About 1 to 2 hours | About 1 to 2 hours | - |
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