Answers.Body: <p>We can't compare Leela vs. AlphaZero or MuZero, because they are private engines. That means we can't just get them to play tens of thousands of games against each other (which is the standard way of telling how strong each engine is). However, if AlphaZero has not improved since it was unveiled, Leela is likely to be stronger than it. The same goes for MuZero, since MuZero only got as strong as AlphaZero. The reasoning is the same as my answer to <a href="https://chess.stackexchange.com/questions/29791/which-is-better-stockfish-10-or-alphazero">this question</a>.</p>
  <p>Leela has a self-play elo as it trains. You can see its progress <a href="https://training.lczero.org/" rel="nofollow noreferrer">here</a>.</p>
  <p>Leela already plays lots of games against other chess engines. You can watch its tournament games <a href="https://lczero.org/watch/" rel="nofollow noreferrer">here</a>, see its tournament results on <a href="https://en.wikipedia.org/wiki/Leela_Chess_Zero#Competition_results" rel="nofollow noreferrer">Wikipedia</a>, and see its position in rating lists such as <a href="http://www.computerchess.org.uk/ccrl/404/" rel="nofollow noreferrer">CCRL</a> and <a href="https://www.sp-cc.de/nn-vs-sf-testing.htm" rel="nofollow noreferrer">SP-CC.de</a>. Caveat: if you are <em>really</em> interested in how &quot;good&quot; Leela is at chess, be sure to check out what the hardware used is.</p>
  
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Answers.CreationDate: 2021-06-10T20:27:43.390Z
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Answers.UserDisplayName: Allure
Answers.Body: <blockquote>
  <p>How strong is Leela Zero today in terms of rating / strength, esp when compared with Alpha Zero / Mu Zero?</p>
  </blockquote>
  <p>We will never know for sure because we don't have the source code for AlphaZero/MuZero. However, it's very likely Leela Zero is a stronger version because it is an evolving project. Open source for the best AI programmers in the world, not just internally to Google.</p>
  <blockquote>
  <p>Will there be matches between Leela Zero and the other AI to derive a
  reliable rating?</p>
  </blockquote>
  <p>A lot of computer tournaments are running. Check TCEC, CCRL etc. You could run your own tournament easily, it's free and open source!</p>
  
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Answers.CreationDate: 2021-06-11T06:27:37.703Z
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Answers.UserDisplayName: SmallChess
Body: <p>I can break my puzzle down into the following:</p>
  <ul>
  <li>How strong is Leela Zero today in terms of rating / strength, esp when compared with Alpha Zero / Mu Zero?</li>
  <li>Does its rating get calculated as it continuously trains?</li>
  <li>Will there be matches between Leela Zero and the other AI to derive a reliable rating?</li>
  </ul>
  
Tags: <engines><rating>
Title: Where does Leela Zero stand (in terms of ELO / strength) when compared with other AI like Mu Zero / Alpha Zero?
ThreadText: # Where does Leela Zero stand (in terms of ELO / strength) when compared with other AI like Mu Zero / Alpha Zero?
  
  (Asked by: username_0 on 2021-06-10)
  
  I can break my puzzle down into the following:
  
  * How strong is Leela Zero today in terms of rating / strength, esp when compared with Alpha Zero / Mu Zero?
  * Does its rating get calculated as it continuously trains?
  * Will there be matches between Leela Zero and the other AI to derive a reliable rating?
  
  **Tags:** engines, rating
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2021-06-10. Score: 3 | Accepted answer
  
  We can't compare Leela vs. AlphaZero or MuZero, because they are private engines. That means we can't just get them to play tens of thousands of games against each other (which is the standard way of telling how strong each engine is). However, if AlphaZero has not improved since it was unveiled, Leela is likely to be stronger than it. The same goes for MuZero, since MuZero only got as strong as AlphaZero. The reasoning is the same as my answer to [this question](https://chess.stackexchange.com/questions/29791/which-is-better-stockfish-10-or-alphazero).
  
  Leela has a self-play elo as it trains. You can see its progress [here](https://training.lczero.org/).
  
  Leela already plays lots of games against other chess engines. You can watch its tournament games [here](https://lczero.org/watch/), see its tournament results on [Wikipedia](https://en.wikipedia.org/wiki/Leela_Chess_Zero#Competition_results), and see its position in rating lists such as [CCRL](http://www.computerchess.org.uk/ccrl/404/) and [SP-CC.de](https://www.sp-cc.de/nn-vs-sf-testing.htm). Caveat: if you are *really* interested in how "good" Leela is at chess, be sure to check out what the hardware used is.
  
  
  ---
  
  ### Answer by username_2 on 2021-06-11. Score: 3
  
  > How strong is Leela Zero today in terms of rating / strength, esp when compared with Alpha Zero / Mu Zero?
  
  We will never know for sure because we don't have the source code for AlphaZero/MuZero. However, it's very likely Leela Zero is a stronger version because it is an evolving project. Open source for the best AI programmers in the world, not just internally to Google.
  
  > Will there be matches between Leela Zero and the other AI to derive a
  > reliable rating?
  
  A lot of computer tournaments are running. Check TCEC, CCRL etc. You could run your own tournament easily, it's free and open source!
  
  
  ---
  
  