Editing AIBO (section)

==Models==

===Prototypes===
Several prototypes have been displayed by Sony. Early models were insect-like with six legs. The specifications and design of the 1997 and 1998 prototypes, described in a Sony press release, closely match those of the first generation AIBOs. Differences include the use of PC-Cards for memory (rather than MemoryStick media), the use of two batteries, and the option to use a 2-wheeled "rolling module" in place of legs.<ref>{{Cite web|url=http://www.sony.net/SonyInfo/News/Press_Archive/199806/98-052/|title=Sony Develops OPEN-R Architecture for Entertainment Robots|website=Sony Global|language=en|access-date=2017-11-15|url-status=live|archive-url=https://web.archive.org/web/20121202000405/http://www.sony.net/SonyInfo/News/Press_Archive/199806/98-052/|archive-date=2012-12-02}}</ref>

===First generation models (11x)===
====ERS-110====
The first commercially available AIBO, ERS-110 has a beagle-like appearance and was silver with a golden-brown hue and grey claws. There was a limited production of 5,000 units: 3,000 for Japan and 2,000 for the US market. Sales began on 1&nbsp;June 1999 and sold out via the Internet in 20&nbsp;minutes. It is often considered the rarest model of AIBO. ERS-110 cost 250,000 yen, or US$2,500, which would convert to over $3,500 as of 2020.

====ERS-111====
[[File:AIBO ERS-111 - July 2010.jpg|thumb|ERS-111]]
The ERS-111 was released in November&nbsp;1999 and was an improved version of the original AIBO marketed at the same price. It has a similar appearance to ERS-110, with different ear and tail shapes, and was available in metallic black or shiny silver with black claws. 40,000 units were manufactured.

===Second generation models (2x0, 31x)===
====ERS-210====
The ERS-210 was designed to look like a lion cub but was essentially a dog-shape with a flat bull terrier face and [[Jack Russell Terrier]] appearance, available in black, silver, gold, red, blue, green and white. It featured [[speech recognition]] capabilities and was the most popular AIBO model with over 65,000 units sold. It sold for around $1,500 at launch which was later reduced to less than $1,000.

====ERS-220====
The ERS-220 had a more futuristic design based on a space exploration robot concept by Shoji Kawamori. It had a chrome finish with headlights and colored LEDs. Between 5,000 and 7,000 units were sold, priced at 180,000 yen. Remote operation was possible through an optional wireless local area network.  Specifications: height 29.6&nbsp;cm, 1.5&nbsp;kg weight, 1.5 hours (default) continuous operation time, 2.5 hours or more operation with a re-celled battery, 16 degrees of freedom (drive unit).

====ERS-210At/220A====
Variants of ERS-210/220 with an improved CPU and head clutch. Nearly identical in appearance to the earlier models, they were distinguished by the Super Core logo on the underside of the body. US$1299 at launch.

====ERS-31x (Latte and Macaron)====
The ERS-31x models had an "AIBO's heart" slogan. The original production design illustrator was Katsura Moschino. The price was 98,000 yen or US$950.
The "Latte" (ERS-311) is an off-white/cream color and is considered the "friendly" model. The "Macaron" (ERS-312) is mostly black with cream accents and is considered the "naughty" model. The "Pug" (ERS-31L) is the least common of the three and was $200 cheaper. The 31x series dogs are considered to look like a [[bichon]] puppy or a bear cub.

====ERS 31xB====
These models are aesthetically identical to the ERS-311 and ERS-312 and feature Bluetooth connection to a handheld viewer (Japan only) which would "translate Aibos thoughts and feelings into text" and enable the handler to play games with them.

===Third generation models (7Mx)===
[[File:Aibo ERS-7.PNG|thumb|ERS-7]]
The [[ERS-7]] and its successive iterations were the third generation of AIBO robots and the final ones released before the product line's 2006 discontinuation. They were first sold in 2003 and priced between $1500 and $2000. It has been estimated that ERS-7 sold 15,000 units of each variant, M1 to M3, for a total of 45,000 units.

=== Fourth generation models ===
==== ERS-1000 ====
[[File:Aibo ERS-1000 - 2.jpg|thumb|ERS-1000]]
The ERS-1000 was the first aibo model in the product line's revival, released in January&nbsp;2018. It is equipped with an LTE SIM card to support interaction and learning via [[cloud computing]], requiring a persistent Internet connection to function fully.<ref>{{Cite web|url=http://aibo.sony.jp/feature/basic.html?s_pid=jp_aibo_/store/_basic_detail|title=aiboベーシックプラン {{!}} aibo|website=aibo.sony.jp|language=ja|access-date=2017-12-05}}</ref> This model has a less-robotic and "cuter" appearance than other models. The ERS-1000 can recognize up to 100 faces, responds to over 50 voice commands, and can learn a customizable trick. It sold for about $3,000.

===QRIO===
[[File:QRIO watch AIBOs at Robocup.jpg|thumb|QRIOs watch AIBOs at a Robocup event.]]

The humanoid [[QRIO]] robot was designed as the successor to AIBO and runs the same base R-CODE and Aperios operating system. Its development was halted prior to commercial release.<ref>{{Cite web|date=2006-01-26|title=Sony reports strong earnings but unplugs Aibo|url=https://www.macworld.com/article/1049118/sony.html|access-date=2020-12-01|website=Macworld|language=en}}</ref>