AIBO ERS-31x (Latte, Macaron, Pug) — Photo: Sony (official image), from sony.com. Image policy

DiscontinuedSucceeded by AIBO ERS-220 JapanFully autonomous

Sony Group Corporation · robot dog

AIBO ERS-31x

Latte, Macaron, Pug

Round-headed, lower-cost AIBO variants. A Japan-only ERS-31xB version added Bluetooth.

Price: $950Cheaper than 90%
Height: —Not published
Weight: —Not published
Payload: —Not published
Speed: —Not published
Battery: —Not published

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Why it matters

Won a Good Design Award; the cheapest AIBO line.

Real-world use

Consumers

Timeline

First shown: 2001-09-05
Released: 2001

Sony announces ERS-311/312 Latte and Macaron (the ERS-31L Pug followed on 2002-05-16)

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-31x (Latte, Macaron, Pug) costs less than 90% of the 21 other robot dogs that publish a price. Bars show the 7 closest in date.

Price $950 $195$100,000 #3 of 22 · cheaper than 90%

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.

3,196 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 2026-10-14; 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 acted as a pet on its own, walking and reacting without anyone controlling it.
Actuators & motors: Simplified body; same body shape across Latte (ERS-311), Macaron (ERS-312) and Pug (ERS-31L).
Sensors & vision: Camera, microphones and touch sensing (details not given in sources used).
AI & software: Character-focused AIBOware; ERS-31xB versions linked by Bluetooth to a handheld 'handy viewer' sold in Japan.
Other details: Sony says this line put personality ahead of new functions. Bodies designed by Katsura Moshino (Good Design Award).

Lineage

Every Sony machine in order.

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

Watch AIBO ERS-31x (Latte, Macaron, Pug)

Video: AP Archive on YouTube. Plays from youtube-nocookie.com when you press play.

Made, sold and where

Unit counts are usually company figures; analysts often disagree.

Price: $95098,000 yen (about US$950); the Pug was $200 cheaper
How to get one: No official buying page found
Sold or delivered: Unit numbers not published
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 Robots — Press Room image archive Sony Sony began sales of AIBO LATTE ERS-311 and MACARON ERS-312 Sony Marketing (Japan) AIBO Official Site: history of AIBO (Japanese)

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