AIBO ERS-111 — Photo: Morgan from Montreal, Quebec, Canada, CC BY 2.0, via Wikimedia Commons

DiscontinuedSucceeded by AIBO ERS-210 JapanFully autonomous

Sony Group Corporation · robot dog

AIBO ERS-111

An improved first-generation AIBO with reshaped ears and a shorter tail, sold in much larger numbers than the ERS-110.

Price: $2,500Cheaper than 43%
Height: —Not published
Weight: —Not published
Payload: —Not published
Speed: —Not published
Battery: —Not published

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Why it matters

A discontinued machine from Sony.

Real-world use

About 40,000 units made.

Timeline

First shown: 1999-11
Released: 1999-11

Sony opened orders for ERS-111; shipping planned by late December 1999

Maker

Sony Group CorporationCompany · founded 1946 · Tokyo, Japan

public company (TYO: 6758; NYSE: SONY)

How it stacks up

Against other robot dogs that publish the figure. Pick a measure.

AIBO ERS-111 costs less than 43% of the 21 other robot dogs that publish a price. Bars show the 7 closest in date.

Price $2,500 $195$100,000 #13 of 22 · cheaper than 43%

Not published by the maker: height, weight, speed, payload, joints, battery.

Public attention

A historic robot: no longer sold or in use, so it is not ranked against current machines.

3,183 views of its Wikipedia article in the last 90 days (AIBO)
1 news story from reputable press listed on this page

Measures how much people read and write about a robot, not how good it is. Measured 2026-10-13; same method for every robot. How it is measured

What’s inside

The parts the company has talked about publicly.

Movement: Walks on legs
How it runs: Fully autonomous. It behaved as a pet on its own, walking, reacting and playing without anyone controlling it.
Actuators & motors: Same mechanism as the ERS-110 with reshaped ears and a shorter tail.
Sensors & vision: As ERS-110: camera, microphones, touch, range and motion sensors.
Compute: 64-bit RISC processor, Aperios OS, Memory Stick software.
AI & software: AIBOware packages (for example Life and Explorer); OPEN-R.
Other details: Released because demand far exceeded the ERS-110's limited run; offered in metallic black or silver.

Lineage

Every Sony machine in order.

Sony Group Corporation also makes 3 humanoids. See every Sony Group Corporation robot

Made, sold and where

Unit counts are usually company figures; analysts often disagree.

Price: $2,500250,000 yen (about US$2,500), same as ERS-110
How to get one: No official buying page found
Built: About 40,000 units
Sold or delivered: General sale at the ERS-110 price
Where it is sold or used: Japan (Sony)
Customers and pilots: Consumers

News

The latest 1, newest first. Summaries are ours; tap through for the original.

2015-02-26
Sony ends Aibo repair service
IEEE Spectrum reported that Sony had stopped maintaining the original Aibo dogs, citing a lack of spare parts, leaving owners to independent repair shops.
IEEE Spectrum

Sources

Figures come from press coverage. Every link below backs something on this page.

Sony Sony Launches Special Edition "AIBO" Entertainment Robot sony.jp AIBO ERS-111: how it is operated Sony Marketing (Japan) AIBO Official Site: history of AIBO (Japanese)

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