KataGo Distributed Training

About This Run

KataGo is a strong open-source self-play-trained Go engine, with many improvements to accelerate learning (arXiv paper and further techniques since). It can predict score and territory, play handicap games reasonably, and handle many board sizes and rules all with the same neural net.

This site hosts KataGo's first public-distributed training run! With the help of volunteers, we are attempting to resume training from the end of KataGo's previous official run ("g170") that ended in June 2020, and see how much further we can go. If would like to contribute, see below!


  • 2022-05-16 - Disabling support for versions older than v1.11.0 in selfplay data contribution so that we can make full use of new graph search parameters for search during selfplay.

  • 2022-03-20 - KataGo v1.11.0 is released! New graph search algorithm instead of tree search, and various parameter improvements.

  • 2022-01-27 - Switching to 60-block net for selfplay data contribution! 40-block net will continue to be trained as well on the data and be rated as well.

Downloading KataGo

If you simply want to run KataGo, the latest releases are here and you can download the latest networks from here. You very likely want a GUI as well, because the engine alone is command-line-only. Some possible GUIs include KaTrain, Lizzie, and q5Go, more can be found searching online.

How to Contribute

Contributors are much appreciated! If you'd like to contribute your spare GPU cycles to generate training data for the run, the steps are:

First, create an account on this site, picking a username and secure password. Make sure to verify your email so that the site considers your account fully active. Note: the username you pick will be publicly visible in statistics and on the games you contribute.

Then pick one of the following methods.

Likely easiest method, for a home desktop computer:

  • Download and install KaTrain
  • Inside the GUI menu, select the option for distributed training, provide the username and password for the account you created, and choose a few settings, then just let it run!

Command line method: if running on a remote server, or have already set up KataGo for other things, or if you want a command line that will work in the background without any GUI, or want slightly more flexibility to configure things:

  • Download KataGo from the latest release.
  • Edit the contribute_example.cfg that came when you downloaded KataGo, use a text editor to fill in your username, password, and the few different settings you want.
  • Run it on the command line like: ./katago contribute -config contribute_example.cfg on Linux, or katago.exe contribute -config contribute_example.cfg on Windows. If it is working, it should print out various stats as it runs, including when it finishes and uploads a game.

Either way, once some games are finished, you can view the results at https://katagotraining.org/contributions/ - scroll down and find your username! If anything looks unusual or buggy about the games, or KataGo is behaving weirdly on your machine, please let us know, so we can avoid uploading and training on bad data. Or, if you encounter any error messages, feel to ask for help on KataGo's GitHub or the Discord chat.

For advanced users, instead of downloading a release, you can also build it from source. If you do so, use the stable branch, NOT the master branch. The example config can be found in cpp/configs/contribute_example.cfg

And if you're interested contribute to development via coding, or have a cool idea for a tool, check out either KataGo's GitHub or the this website's GitHub, and/or the Discord chat where various devs hang out. If you want to test a change that affects the distributed client and you need a test server to experiment with modified versions of KataGo, it is available at test.katagodistributed.org, contact lightvector or tychota in Discord for a testing account.

Stats for kata1

This run is named kata1 and began on 2020-11-28 20:23:43 UTC.

Data Generation

Across all time, 752 distinct users have uploaded 1,819,681,158 rows of training data, 34,755,608 training games, and 786,013 rating games.

In the last week, 55 distinct users have uploaded 4,480,942 rows of training data, 89,631 new training games, and 2,013 new rating games.

In the last 24h, 37 distinct users have uploaded 630,336 rows of training data, 12,675 new training games, and 429 new rating games.

Look up and view games for this run here.


A total of 533 networks have been uploaded for kata1.

Latest network: kata1-b60c320-s6678602752-d3043834427

Strongest confidently-rated network: kata1-b40c256-s11840935168-d2898845681

Approximate Elo Ratings Graph
Graph is based on about 786,013 rating games using mid to high hundreds of playouts. Ratings might still be mildly inflated due to only playing other KataGo nets, but otherwise are fresh and unbiased and involve a variety of nets to avoid rock-paper-scissors. Vertical bars indicate approximately a 95% confidence interval.

Click and drag to zoom. Double-click or click on a button to reset zoom.

Top Contributors

See here for a full list of contributors for kata1.

In the Last 24h

User Training Rows Training Games Rating Games
Friday9i 141,664 rows generated 2,872 training games 35 rating games
badukmegapack 132,720 rows generated 2,654 training games 36 rating games
maomaochong 66,429 rows generated 1,346 training games 8 rating games
luotiany 37,984 rows generated 754 training games 0 rating games
thenorthcore 32,286 rows generated 637 training games 16 rating games
靳中贺 29,262 rows generated 586 training games 10 rating games
iKataGo 28,640 rows generated 559 training games 4 rating games
pawnstar 23,373 rows generated 464 training games 8 rating games
菜鸟老树 22,842 rows generated 479 training games 16 rating games
linghan 15,752 rows generated 310 training games 0 rating games
Loong 13,620 rows generated 259 training games 0 rating games
KataTaka 10,624 rows generated 212 training games 5 rating games
MiKayule 10,385 rows generated 214 training games 20 rating games
jojo 10,356 rows generated 203 training games 53 rating games
carton 8,111 rows generated 161 training games 2 rating games

In the Last Week

User Training Rows Training Games Rating Games
Friday9i 1,269,147 rows generated 25,258 training games 315 rating games
badukmegapack 903,307 rows generated 17,877 training games 251 rating games
水底2022 359,554 rows generated 7,169 training games 98 rating games
luotiany 338,995 rows generated 6,801 training games 60 rating games
maomaochong 316,556 rows generated 6,468 training games 97 rating games
thenorthcore 203,319 rows generated 4,006 training games 88 rating games
靳中贺 178,154 rows generated 3,759 training games 18 rating games
pawnstar 105,534 rows generated 2,097 training games 64 rating games
jojo 89,768 rows generated 1,774 training games 187 rating games
菜鸟老树 86,076 rows generated 1,740 training games 36 rating games
KataTaka 77,606 rows generated 1,587 training games 34 rating games
Abex 61,231 rows generated 1,241 training games 10 rating games
iKataGo 56,199 rows generated 1,092 training games 16 rating games
linghan 51,209 rows generated 1,038 training games 0 rating games
matoba 49,381 rows generated 1,015 training games 21 rating games


User Training Rows Training Games Rating Games
luckyangman 342,435,207 rows generated 6,418,062 training games 140,115 rating games
yaoge123 229,598,550 rows generated 4,480,261 training games 58,864 rating games
AiqiGo 148,551,176 rows generated 2,819,086 training games 53,342 rating games
jiusi010302 111,549,344 rows generated 2,157,135 training games 32,148 rating games
VegetableKnife 79,204,855 rows generated 1,470,688 training games 23,367 rating games
katavip.net 70,355,820 rows generated 1,379,526 training games 18,872 rating games
jameswen429 65,701,378 rows generated 1,211,481 training games 30,013 rating games
maomaochong 50,350,555 rows generated 1,006,537 training games 21,466 rating games
badukmegapack 47,654,368 rows generated 933,342 training games 15,554 rating games
kcwu 45,131,243 rows generated 865,458 training games 90,968 rating games
Friday9i 41,444,939 rows generated 819,909 training games 23,031 rating games
Sponsorship 35,233,550 rows generated 668,781 training games 13,461 rating games
spark9 34,586,663 rows generated 663,843 training games 13,537 rating games
petgo3 29,402,288 rows generated 554,063 training games 13,171 rating games
Buddha 20,794,173 rows generated 383,435 training games 9,015 rating games