Editing Elo rating system (section)

== Use outside of chess ==
=== Other board and card games ===
* ''[[Go (game)|Go]]'': The [[European Go Federation]] adopted an Elo-based rating system initially pioneered by the Czech Go Federation.
* ''[[Backgammon]]'': The popular First Internet Backgammon Server (FIBS) calculates ratings based on a modified Elo system. New players are assigned a rating of 1500, with the best humans and bots rating over 2000. The same formula has been adopted by several other backgammon sites, such as [[Play65]], [[DailyGammon]], [[GoldToken]] and [[VogClub]]. VogClub sets a new player's rating at 1600. The UK Backgammon Federation uses the FIBS formula for its UK national ratings.<ref>{{cite web|url=https://results.ukbgf.com/explain-ratings|title=Backgammon Ratings Explained|website=results.ukbgf.com|access-date=2020-06-01|archive-url=https://web.archive.org/web/20191114175326/http://results.ukbgf.com/explain-ratings|archive-date=2019-11-14|url-status=dead}}</ref>
* ''[[Scrabble]]'': National Scrabble organizations compute normally distributed Elo ratings except in the [[United Kingdom]], where a different system is used. The [[North American Scrabble Players Association]] has the largest rated population of active members, numbering about 2,000 as of early 2011. [[Lexulous]] also uses the Elo system.
* Despite questions of the appropriateness of using the Elo system to rate games in which luck is a factor, trading-card game manufacturers often use Elo ratings for their organized play efforts. The [[Duelists' Convocation International|DCI]] (formerly Duelists' Convocation International) used Elo ratings for tournaments of ''[[Magic: The Gathering]]'' and other [[Wizards of the Coast]] games. However, the DCI abandoned this system in 2012 in favor of a new cumulative system of "Planeswalker Points", chiefly because of the above-noted concern that Elo encourages highly rated players to avoid playing to "protect their rating".<ref name="Planeswalkerpointsarticle" /><ref name="planeswalkerpointsarticle2" /> [[Pokémon USA]] uses the Elo system to rank its TCG organized play competitors.<ref>{{cite web|url=http://www.pokemon.com/us/play-pokemon/about/tournaments-glossary/#elo|title=Play! Pokémon Glossary: Elo|access-date=January 15, 2015|archive-date=January 15, 2015|archive-url=https://web.archive.org/web/20150115173351/http://www.pokemon.com/us/play-pokemon/about/tournaments-glossary/#elo|url-status=live}}</ref> Prizes for the top players in various regions included holidays and world championships invites until the 2011–2012 season, where awards were based on a system of Championship Points, their rationale being the same as the DCI's for ''Magic: The Gathering''. Similarly, [[Decipher, Inc.]] used the Elo system for its ranked games such as ''[[Star Trek Customizable Card Game]]'' and ''[[Star Wars Customizable Card Game]]''.

=== Athletic sports ===
The Elo rating system is used in the chess portion of [[chess boxing]]. In order to be eligible for professional chess boxing, one must have an Elo rating of at least 1600, as well as competing in 50 or more matches of amateur boxing or martial arts.

[[College football|American college football]] used the Elo method as a portion of its [[Bowl Championship Series]] rating systems from [[1998 NCAA Division I-A football season|1998]] to [[2013 NCAA Division I FBS football season|2013]] after which the BCS was replaced by the [[College Football Playoff]]. [[Jeff Sagarin]] of ''[[USA Today]]'' publishes team rankings for most American sports, which includes Elo system ratings for college football. The use of rating systems was effectively scrapped with the creation of the [[College Football Playoff]] in 2014.

In other sports, individuals maintain rankings based on the Elo algorithm. These are usually unofficial, not endorsed by the sport's governing body. The [[World Football Elo Ratings]] is an example of the method applied to men's [[association football|football]].<ref>{{cite web |last1=Lyons |first1=Keith |title=What are the World Football Elo Ratings? |url=https://theconversation.com/what-are-the-world-football-elo-ratings-27851 |website=The Conversation |date=10 June 2014 |access-date=3 July 2019 |language=en |archive-date=15 June 2019 |archive-url=https://web.archive.org/web/20190615101903/http://theconversation.com/what-are-the-world-football-elo-ratings-27851 |url-status=live}}</ref> In 2006, Elo ratings were adapted for [[Major League Baseball]] teams by [[Nate Silver]], then of [[Baseball Prospectus]].<ref>{{Cite web 
| last = Silver | first = Nate
| author-link= Nate Silver
|date=2006-06-28 |title=Lies, Damned Lies: We are Elo? |url=https://www.baseballprospectus.com/news/article/5247/lies-damned-lies-we-are-elo/ |access-date=2023-01-13
|archive-url=https://web.archive.org/web/20060822122806/http://baseballprospectus.com/article.php?articleid=5247|archive-date=2006-08-22}}</ref> Based on this adaptation, both also made Elo-based [[Monte Carlo method|Monte Carlo]] simulations of the odds of whether teams will make the playoffs.<ref>{{cite web |url=http://www.baseballprospectus.com/statistics/ps_oddselo.php |title=Postseason Odds, ELO version |publisher=Baseballprospectus.com |access-date=2012-02-19 |archive-date=2012-03-07 |archive-url=https://web.archive.org/web/20120307174118/http://www.baseballprospectus.com/statistics/ps_oddselo.php |url-status=live}}</ref> In 2014, Beyond the Box Score, an [[SB Nation]] site, introduced an Elo ranking system for international baseball.<ref>{{cite news |url=http://www.beyondtheboxscore.com/2014/8/15/5989787/elo-rankings-for-international-baseball |title=Elo rankings for international baseball |last1=Cole |first1=Bryan |date=August 15, 2014 |work=Beyond the Box Score |access-date=4 November 2015|publisher=[[SB Nation]] |archive-date=2 January 2016 |archive-url=https://web.archive.org/web/20160102111843/http://www.beyondtheboxscore.com/2014/8/15/5989787/elo-rankings-for-international-baseball |url-status=live}}</ref>

In tennis, the Elo-based Universal Tennis Rating (UTR) rates players on a global scale, regardless of age, gender, or nationality. It is the official rating system of major organizations such as the [[Intercollegiate Tennis Association]] and [[World TeamTennis]] and is frequently used in segments on the [[Tennis Channel]]. The algorithm analyzes more than 8 million match results from over 800,000 tennis players worldwide. On May 8, 2018, [[Rafael Nadal]]—having won 46 consecutive sets in clay court matches—had a near-perfect clay UTR of 16.42.<ref>{{cite web|url=https://blog.universaltennis.com/2018/05/08/is-rafa-the-goat-of-clay/|title=Is Rafa the GOAT of Clay?|date=8 May 2018|access-date=22 August 2018|archive-date=27 February 2021|archive-url=https://web.archive.org/web/20210227064453/https://blog.universaltennis.com/2018/05/08/is-rafa-the-goat-of-clay/|url-status=live}}</ref>

In [[pool (cue sports)|pool]], an Elo-based system called Fargo Rate is used to rank players in organized amateur and professional competitions.<ref>{{cite web|url=https://fargorate.com/|title=Fargo Rate|access-date=31 March 2022}}</ref>

One of the few Elo-based rankings endorsed by a sport's governing body is the [[FIFA Women's World Rankings]], based on a simplified version of the Elo algorithm, which [[FIFA]] uses as its official ranking system for national teams in [[women's association football|women's football]]. From the first ranking list after the [[2018 FIFA World Cup]], FIFA has also used Elo for their [[FIFA Men's World Rankings]].<ref>{{cite web |url=https://resources.fifa.com/image/upload/revision-of-the-fifa-coca-cola-world-ranking.pdf?cloudid=jgxjkdrj1jfwyunjbkha |title=Revision of the FIFA/Coca-Cola World Ranking |publisher=FIFA |date=June 2018 |access-date=2020-06-30 |archive-url=https://web.archive.org/web/20180612141237/https://resources.fifa.com/image/upload/revision-of-the-fifa-coca-cola-world-ranking.pdf?cloudid=jgxjkdrj1jfwyunjbkha |archive-date=2018-06-12 |url-status=dead}}</ref>

In 2015, Nate Silver, editor-in-chief of the statistical commentary website [[FiveThirtyEight]], and Reuben Fischer-Baum produced Elo ratings for every [[National Basketball Association]] team and season through the 2014 season.<ref>{{cite web |last1=Silver |first1=Nate |last2=Fischer-Baum |first2=Reuben |date=May 21, 2015 |title=How We Calculate NBA Elo Ratings |url=https://fivethirtyeight.com/features/how-we-calculate-nba-elo-ratings/ |archive-url=https://web.archive.org/web/20150523164940/http://fivethirtyeight.com/features/how-we-calculate-nba-elo-ratings/ |archive-date=2015-05-23 |url-status=live |publisher=[[FiveThirtyEight]]}}</ref><ref>Reuben Fischer-Baum and Nate Silver, "The Complete History of the NBA," ''FiveThirtyEight,'' May 21, 2015.[http://fivethirtyeight.com/interactives/the-complete-history-of-every-nba-team-by-elo/#bulls] {{Webarchive|url=https://web.archive.org/web/20150523115345/http://fivethirtyeight.com/interactives/the-complete-history-of-every-nba-team-by-elo/#bulls|date=2015-05-23}}</ref> In 2014 FiveThirtyEight created Elo-based ratings and win-projections for the American professional [[National Football League]].<ref>{{cite web| first = Nate | last = Silver
| title=Introducing NFL Elo Ratings
|url=https://fivethirtyeight.com/features/introducing-nfl-elo-ratings/
| date = September 4, 2014
| publisher= FiveThirtyEight
|archive-url=https://web.archive.org/web/20150912084549/https://fivethirtyeight.com/datalab/introducing-nfl-elo-ratings/ |archive-date=September 12, 2015 }}{{pb}}{{ cite web
| first = Neil | last = Paine
| title=NFL Elo Ratings Are Back | publisher = FiveThirtyEight
| url =https://fivethirtyeight.com/features/nfl-elo-ratings-are-back/
| date =September 10, 2015 
| url-status = live |archive-url=https://web.archive.org/web/20150911100901/http://fivethirtyeight.com/datalab/nfl-elo-ratings-are-back/ 
|archive-date=September 11, 2015 }}.
</ref>

The English [[Korfball]] Association rated teams based on Elo ratings, to determine handicaps for their cup competition for the 2011/12 season.

An Elo-based ranking of [[National Hockey League]] players has been developed.<ref>{{cite web |url=http://www.hockeystatsrevolution.com/|title=Hockey Stats Revolution – How do teams pick players? |website=Hockey Stats Revolution |access-date=2016-09-29 |archive-date=2016-10-02 |archive-url=https://web.archive.org/web/20161002040358/http://www.hockeystatsrevolution.com/ |url-status=live}}</ref> The hockey-Elo metric evaluates a player's overall two-way play: scoring AND defense in both even strength and power-play/penalty-kill situations.

Rugbyleagueratings.com uses the Elo rating system to rank international and club [[rugby league]] teams.

Hemaratings.com was started in 2017 and uses a Glicko-2 algorithm to rank individual [[Historical European martial arts]] fencers worldwide in different categories such as [[Longsword]],[[ Rapier]], historical [[Sabre]] and Sword & [[Buckler]].<ref>{{cite web |title=About the Ratings - Hema Ratings |url=https://hemaratings.com/about-ratings/ |access-date=2024-01-30 |website=Hemaratings}}</ref>

=== Video games and online games ===
Many video games use modified Elo systems in competitive gameplay. The [[Multiplayer online battle arena|MOBA]] game [[League of Legends]] used an Elo rating system prior to the second season of competitive play.<ref>{{cite web|url=http://na.leagueoflegends.com/learn/gameplay/matchmaking|title=Matchmaking &#124; LoL – League of Legends|date=2010-07-06|publisher=Na.leagueoflegends.com|access-date=2012-02-19|archive-date=2012-02-26|archive-url=https://web.archive.org/web/20120226001928/http://na.leagueoflegends.com/learn/gameplay/matchmaking|url-status=live}}</ref> The [[Esports]] game ''[[Overwatch (video game)|Overwatch]]'', the basis of the unique [[Overwatch League]] professional [[Professional sports league organization|sports organization]], uses a derivative of the Elo system to rank competitive players with various adjustments made between competitive seasons.<ref>{{cite web |url=https://playoverwatch.com/en-us/blog/21363037|title=Welcome to Season 8 of competitive play |website=PlayOverwatch.com |publisher=Blizzard Entertainment|access-date=11 March 2018|archive-date=12 March 2018|archive-url=https://web.archive.org/web/20180312144148/https://playoverwatch.com/en-us/blog/21363037|url-status=live}}</ref> ''[[World of Warcraft]]'' also previously used the [[Glicko rating system|Glicko-2]] system to team up and compare Arena players, but now uses a system similar to Microsoft's [[TrueSkill]].<ref>{{cite web|date=2011-12-14|title=World of Warcraft Europe -> The Arena|url=http://www.wow-europe.com/en/info/basics/arena/index.html|url-status=dead|archive-url=https://web.archive.org/web/20100923213409/http://www.wow-europe.com/en/info/basics/arena/index.html|archive-date=2010-09-23|access-date=2012-02-19|publisher=Wow-europe.com}}</ref> The game ''[[Puzzle Pirates]]'' uses the Elo rating system to determine the standings in the various puzzles. This system is also used in FIFA Mobile for the Division Rivals modes. Another recent game to start using the Elo rating system is ''[[AirMech]]'', using Elo<ref>{{cite web |url=https://www.carbongames.com/forums/viewtopic.php?p=83043#p83043|title=AirMech developer explains why they use Elo|access-date=January 15, 2015|archive-date=February 17, 2015|archive-url=https://web.archive.org/web/20150217215610/https://www.carbongames.com/forums/viewtopic.php?p=83043#p83043|url-status=live}}</ref> ratings for 1v1, 2v2, and 3v3 random/team matchmaking. ''[[RuneScape|RuneScape 3]]'' used the Elo system in the rerelease of the bounty hunter minigame in 2016.<ref>[http://services.runescape.com/m=news/design-doc--bounty-hunter--deathmatch-pvp?acq_id=3001]{{Dead link|date=April 2017}}</ref> ''[[Mechwarrior Online]]'' instituted an Elo system for its new "Comp Queue" mode, effective with the Jun 20, 2017 patch.<ref>{{cite web |url=https://mwomercs.com/news/2017/06/1839-patch-notes-14120-20jun2017|title=MWO: News|website=mwomercs.com|access-date=2017-06-27 |archive-date=2018-08-27|archive-url=https://web.archive.org/web/20180827174110/https://mwomercs.com/news/2017/06/1839-patch-notes-14120-20jun2017|url-status=live}}</ref> ''[[Age of Empires II: Definitive Edition|Age of Empires II DE]]'' and  ''[[Age of Empires III: Definitive Edition|Age of Empires III DE]]'' are using the Elo system for their Leaderboard and matchmaking, with new players starting at Elo 1000.<ref>{{Cite web |url=https://www.ageofempires.com/stats/ageiide/ |title=Age of Empires II: DE Leaderboards - Age of Empires |date=14 November 2019 |access-date=27 January 2022 |archive-date=27 January 2022 |archive-url=https://web.archive.org/web/20220127170906/https://www.ageofempires.com/stats/ageiide/ |url-status=live}}</ref> Competitive [[Classic Tetris]] ([[Tetris]] played on the [[Nintendo Entertainment System]]) derives its ratings using a combination of players' [[Personal_record | personal best scores]] and a highly modified Elo system.<ref>{{cite web |url=https://listfist.com/list-of-the-best-tetris-players-in-the-world-nes-ntsc|title=List of the Best Tetris Players in the World (NES NTSC)
|date=27 October 2020
|access-date=July 15, 2024}}</ref>

Few video games use the original Elo rating system. According to [[Lichess]], an online chess server, the Elo system is outdated, with Glicko-2 now being used by many chess organizations.<ref>{{cite web |title=Frequently Asked Questions: ratings |url=https://lichess.org/faq#ratings |website=lichess.org |access-date=2020-11-11 |archive-date=2019-04-02 |archive-url=https://web.archive.org/web/20190402042835/https://lichess.org/qa/55/how-old-is-lichess#ratings |url-status=live}}</ref> [[PlayerUnknown's Battlegrounds|''PlayerUnknown’s Battlegrounds'']] is one of the few video games that utilizes the very first Elo system. In ''[[Guild Wars]]'', Elo ratings are used to record guild rating gained and lost through guild-versus-guild battles. In 1998, an online gaming ladder called ''Clanbase''<ref>{{cite web |url=http://clanbase.com/ |title=Wayback Machine record of Clanbase.com |archive-url=https://web.archive.org/web/20171105073119/http://www.clanbase.com/ |archive-date=2017-11-05 |url-status=dead |access-date=2017-10-29}}</ref> was launched, which used the Elo scoring system to rank teams. The initial K-value was 30, but was changed to 5 in January 2007, then changed to 15 in July 2009.<ref>{{cite web|url=http://wiki.guildwars.com/wiki/Guild_ladder |title=Guild ladder|publisher=Wiki.guildwars.com|access-date=2012-02-19|archive-url=https://web.archive.org/web/20120301192358/http://wiki.guildwars.com/wiki/Guild_ladder|archive-date=2012-03-01|url-status=dead}}</ref> The site later went offline in 2013.<ref>{{cite web|url=http://clanbase.org/|title=Clanbase farewell message|access-date=2017-10-29|archive-date=2013-12-24|archive-url=https://web.archive.org/web/20131224094122/http://clanbase.org/|url-status=live}}</ref> A similar alternative site was launched in 2016 under the name ''Scrimbase'',<ref>{{cite web|url=https://scrimbase.com/about|title=Scrimbase Gaming Ladder|access-date=2017-10-29|archive-date=2017-10-30|archive-url=https://web.archive.org/web/20171030003609/https://scrimbase.com/about|url-status=live}}</ref> which also used the Elo scoring system for ranking teams. Since 2005, ''[[Golden Tee Golf|Golden Tee Live]]'' has rated players based on the Elo system. New players start at 2100, with top players rating over 3000.<ref>{{cite web|url=http://www.goldenteefan.com/statistics/player-rating-handicap/|title=Golden Tee Fan Player Rating Page |date=26 December 2007|access-date=2013-12-31|archive-date=2014-01-01|archive-url=https://web.archive.org/web/20140101102859/http://www.goldenteefan.com/statistics/player-rating-handicap/|url-status=live}}</ref>

Despite many video games using different systems for [[matchmaking (video games)|matchmaking]], it is common for players of ranked video games to refer to all matchmaking ratings as ''Elo''.

===Other usage===
The Elo rating system has been used in [[soft biometrics]],<ref>[http://eprints.soton.ac.uk/272922/1/IJCB%20(3).pdf "Using Comparative Human Descriptions for Soft Biometrics"] {{webarchive|url=https://web.archive.org/web/20130308190221/http://eprints.soton.ac.uk/272922/1/IJCB%20%283%29.pdf |date=2013-03-08 }}, D.A. Reid and M.S. Nixon, International Joint Conference on Biometrics (IJCB), 2011</ref> which concerns the identification of individuals using human descriptions. Comparative descriptions were utilized alongside the Elo rating system to provide robust and discriminative 'relative measurements', permitting accurate identification.

The Elo rating system has also been used in biology for assessing male dominance hierarchies,<ref>{{cite journal |last=Pörschmann |journal=Molecular Ecology|year=2010|volume=19|issue=12|pages=2574–86|title=Male reproductive success and its behavioural correlates in a polygynous mammal, the Galápagos sea lion (Zalophus wollebaeki) |doi=10.1111/j.1365-294X.2010.04665.x |pmid=20497325 |s2cid=19595719|display-authors=etal}}</ref> and in automation and computer vision for [[fabric inspection]].<ref>{{cite journal |last=Tsang |journal=Pattern Recognition |year=2016 |volume=51 |pages=378–394 |title=Fabric inspection based on the Elo rating method |doi=10.1016/j.patcog.2015.09.022 |bibcode=2016PatRe..51..378T |hdl=10722/229176 |display-authors=etal |url=https://repository.hkbu.edu.hk/cgi/viewcontent.cgi?article=7236&context=hkbu_staff_publication |access-date=2020-05-05 |archive-date=2020-11-05 |archive-url=https://web.archive.org/web/20201105011616/https://repository.hkbu.edu.hk/cgi/viewcontent.cgi?article=7236&context=hkbu_staff_publication |url-status=dead|hdl-access=free }}</ref>

Moreover, [[online judge]] sites are also using Elo rating system or its derivatives. For example, [[Topcoder]] is using a modified version based on normal distribution,<ref>{{cite web|url=http://apps.topcoder.com/wiki/display/tc/Algorithm+Competition+Rating+System |title=Algorithm Competition Rating System|date=December 23, 2009|access-date=September 16, 2011|archive-url=https://web.archive.org/web/20110902110117/http://apps.topcoder.com/wiki/display/tc/Algorithm+Competition+Rating+System|archive-date=September 2, 2011|url-status=dead}}</ref> while [[Codeforces]] is using another version based on logistic distribution.<ref>{{cite web |url=http://www.codeforces.com/help|title=FAQ: What are the rating and the divisions?|access-date=September 16, 2011|archive-date=September 25, 2011|archive-url=https://web.archive.org/web/20110925191346/http://codeforces.com/help|url-status=live}}</ref><ref>{{cite web|url=http://www.codeforces.com/blog/entry/870|title=Rating Distribution|access-date=September 16, 2011|archive-date=October 13, 2011|archive-url=https://web.archive.org/web/20111013103750/http://codeforces.com/blog/entry/870|url-status=live}}</ref><ref>{{cite web|url=http://www.codeforces.com/blog/entry/893|title=Regarding rating: Part 2|access-date=September 16, 2011 |archive-date=October 13, 2011|archive-url=https://web.archive.org/web/20111013063622/http://codeforces.com/blog/entry/893|url-status=live}}</ref>

The Elo rating system has also been noted in dating apps, such as in the matchmaking app [[Tinder (app)|Tinder]], which uses a variant of the Elo rating system.<ref name=":4">{{Cite news|url=https://killscreen.com/articles/tinder-matchmaking-is-more-like-warcraft-than-you-might-think/|title=Tinder matchmaking is more like Warcraft than you might think – Kill Screen|date=2016-01-14|work=Kill Screen |access-date=2017-08-19|language=en-US|archive-url=https://web.archive.org/web/20170819190821/https://killscreen.com/articles/tinder-matchmaking-is-more-like-warcraft-than-you-might-think/|archive-date=2017-08-19|url-status=dead}}</ref>

The YouTuber [[Marques Brownlee]] and his team used Elo rating system when they let people to vote between digital photos taken with different [[smartphone]] models launched in 2022.<ref>{{cite web|url=https://www.youtube.com/watch?v=LQdjmGimh04|title=The Best Smartphone Camera 2022!|website=[[YouTube]] |date=2022-12-22|access-date=2023-01-07|language=en-US}}</ref>

The Elo rating system has also been used in [[College and university rankings in the United States#Revealed preference rankings|U.S. revealed preference college rankings]], such as those by the digital credential firm Parchment.<ref name=":1">{{Cite journal |last1=Avery |first1=Christopher N. |author-link=Christopher N. Avery |last2=Glickman |first2=Mark E. |last3=Hoxby |first3=Caroline M. |last4=Metrick |first4=Andrew |date=2013-02-01 |title=A Revealed Preference Ranking of U.S. Colleges and Universities |url= |journal=[[The Quarterly Journal of Economics]] |language=en |volume=128 |issue=1 |pages=425–467 |doi=10.1093/qje/qjs043 |issn=}}</ref><ref>{{cite news |last1=Irwin |first1=Neil |date=4 September 2014 |title=Why Colleges With a Distinct Focus Have a Hidden Advantage |work=[[The New York Times]] |department=[[The Upshot]] |url=https://www.nytimes.com/2014/09/04/upshot/why-colleges-with-a-distinct-focus-have-a-hidden-advantage.html |access-date=9 May 2023}}</ref><ref>{{cite news |last1=Selingo |first1=Jeffrey J. |date=September 23, 2015 |title=When students have choices among top colleges, which one do they choose? |newspaper=[[The Washington Post]] |url=https://www.washingtonpost.com/news/grade-point/wp/2015/09/23/when-students-have-choices-among-top-colleges-which-one-do-they-choose/ |access-date=9 May 2023}}</ref>

The Elo rating system has also been adopted to evaluate AI models. In 2021, Anthropic utilized the Elo system for ranking AI models in their research.<ref>{{cite arXiv|last1=Askell |first1=Amanda |title=A General Language Assistant as a Laboratory for Alignment |date=2021-12-09 |eprint=2112.00861 |last2=Bai |first2=Yuntao |last3=Chen |first3=Anna |last4=Drain |first4=Dawn |last5=Ganguli |first5=Deep |last6=Henighan |first6=Tom |last7=Jones |first7=Andy |last8=Joseph |first8=Nicholas |last9=Mann |first9=Ben|class=cs.CL }}</ref> The LMSYS leaderboard briefly employed the Elo rating system to rank AI models<ref>{{Cite web |title=Chatbot Arena Leaderboard Week 8: Introducing MT-Bench and Vicuna-33B {{!}} LMSYS Org |url=https://lmsys.org/blog/2023-06-22-leaderboard |access-date=2024-02-28 |website=lmsys.org |language=en}}</ref> before transitioning to [[Bradley–Terry model]].<ref>{{Cite web |title=Chatbot Arena: New models & Elo system update {{!}} LMSYS Org |url=https://lmsys.org/blog/2023-12-07-leaderboard |access-date=2024-02-28 |website=lmsys.org |language=en}}</ref>