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!


  • 2023-12-28 - KataGo v1.14.0 is released! This version adds support for a new larger and hopefully stronger "b28" neural net that will likely be ready within the next months. It also has a large number of more minor bugfixes and changes.

  • 2023-06-13 - We are upgraded now - kata1-b18c384nbt-s6582M is the first 18-nested-block neural net with the new improved output heads! You will need to be on version v1.13.0 or later to use the nets from here onward.

  • 2023-05-23 - KataGo v1.13.0 is released! Supports a new version of neural nets with improved output heads for policy and error prediction and various other analysis and search and training improvements. Once most or all contributors upgrade, we will be able to switch to the improved nets. If you're an active contributor please upgrade when you can!

  • 2023-03-04 - We're fully switched to v1.12 now and the first new net of the new architecture, b18c384nbt, has been uploaded for testing! Note the learning rate has been kept far higher than every other network, so it might not be as strong yet as the "uec" version of the new net on the releases page.

  • 2023-02-18 - KataGo is now up to version v1.12.4, with some bugfixes for training data generation! Once enough users are upgraded to this version and particularly off of v1.11, we can try the new improved b18 net and architecture for rating games and data generation. Please upgrade if you can!

  • 2023-01-07 - New release of KataGo, v1.12.0, supporting a new neural net architecture! The new net, b18-uec is about as strong as the 60-block nets but should be faster to run.

  • 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, LizzieYzy, 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, 1073 distinct users have uploaded 2,941,423,555 rows of training data, 57,815,374 training games, and 1,242,260 rating games.

In the last week, 59 distinct users have uploaded 17,547,969 rows of training data, 361,041 new training games, and 6,376 new rating games.

In the last 24h, 34 distinct users have uploaded 2,163,992 rows of training data, 44,531 new training games, and 625 new rating games.

Look up and view games for this run here.


A total of 721 networks have been uploaded for kata1.

Latest network: kata1-b18c384nbt-s9432368384-d4165837414

Strongest confidently-rated network: kata1-b18c384nbt-s9131461376-d4087399203

Approximate Elo Ratings Graph
Graph is based on about 1,242,260 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
genleung 1,003,386 rows generated 20,618 training games 188 rating games
TheOnly92 208,801 rows generated 4,297 training games 60 rating games
maverick 189,548 rows generated 3,916 training games 64 rating games
OmnipotentEntity 186,341 rows generated 3,849 training games 64 rating games
maxueba 168,788 rows generated 3,412 training games 72 rating games
Bubblesld 70,648 rows generated 1,456 training games 49 rating games
gnaij 59,395 rows generated 1,224 training games 36 rating games
孙源辰 54,458 rows generated 1,102 training games 20 rating games
ntkylin 32,108 rows generated 664 training games 22 rating games
Miles 30,396 rows generated 616 training games 0 rating games
tatianyi 27,392 rows generated 575 training games 4 rating games
egri-nagy 22,318 rows generated 458 training games 8 rating games
toledo 19,276 rows generated 391 training games 8 rating games
lbnmg 15,460 rows generated 322 training games 4 rating games
YangZ 14,766 rows generated 310 training games 4 rating games

In the Last Week

User Training Rows Training Games Rating Games
yaoge123 6,770,304 rows generated 139,143 training games 2,457 rating games
TheOnly92 1,460,386 rows generated 29,858 training games 424 rating games
OmnipotentEntity 1,323,249 rows generated 27,224 training games 408 rating games
maverick 1,260,000 rows generated 25,965 training games 479 rating games
genleung 1,224,122 rows generated 25,110 training games 244 rating games
maxueba 1,037,483 rows generated 21,215 training games 449 rating games
水底2022 750,729 rows generated 15,564 training games 352 rating games
Bubblesld 385,148 rows generated 7,878 training games 173 rating games
菜鸟老树 351,658 rows generated 7,225 training games 122 rating games
gnaij 340,379 rows generated 6,929 training games 160 rating games
孙源辰 320,506 rows generated 6,617 training games 130 rating games
espadrine 233,369 rows generated 4,854 training games 104 rating games
flyingWildPig 231,716 rows generated 4,785 training games 112 rating games
iris_leung 229,312 rows generated 4,724 training games 116 rating games
Miles 224,950 rows generated 4,601 training games 0 rating games


User Training Rows Training Games Rating Games
yaoge123 415,886,347 rows generated 8,297,578 training games 132,997 rating games
luckyangman 342,435,207 rows generated 6,418,062 training games 140,115 rating games
水底2022 260,214,730 rows generated 5,361,833 training games 126,464 rating games
Friday9i 162,006,581 rows generated 3,282,056 training games 44,140 rating games
AiqiGo 148,551,176 rows generated 2,819,086 training games 53,342 rating games
maomaochong 124,041,247 rows generated 2,533,425 training games 55,021 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
TheOnly92 57,942,680 rows generated 1,198,758 training games 25,030 rating games
badukmegapack 55,230,749 rows generated 1,085,356 training games 17,946 rating games
maxueba 48,661,267 rows generated 991,669 training games 22,188 rating games
菜鸟老树 45,475,471 rows generated 924,052 training games 13,920 rating games
kcwu 45,131,243 rows generated 865,458 training games 90,968 rating games