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!


  • 2024-05-02 - First "b28" neural net uploaded! This new larger neural net runs more slowly, similar to the old 60-block nets, but should be much stronger. From tests on discord, under normal usage this series of nets should be stronger than the b18 nets given equal total time, despite the slower speed, and be by far the strongest nets so far on a per-visit basis. We've also upgraded contributing to require KataGo v1.14.0 or later to support this net.

  • 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, 1101 distinct users have uploaded 3,074,870,872 rows of training data, 60,579,793 training games, and 1,292,521 rating games.

In the last week, 47 distinct users have uploaded 10,920,449 rows of training data, 225,747 new training games, and 4,481 new rating games.

In the last 24h, 24 distinct users have uploaded 980,858 rows of training data, 20,274 new training games, and 475 new rating games.

Look up and view games for this run here.


A total of 739 networks have been uploaded for kata1.

Latest network: kata1-b18c384nbt-s9937771520-d4300882049

Strongest confidently-rated network: kata1-b28c512nbt-s6797380608-d4265362003

Approximate Elo Ratings Graph
Graph is based on about 1,292,521 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.

Graph is based on games at equal visits rather than equal compute time, since the former is easier to control on widely varying user hardware. Larger/slower networks will be advantaged due to getting more total compute time. Given particular hardware, one can approximately correct for this by benchmarking to measure the speed difference, each doubling of speed may be worth somewhere around 150-250 Elo.

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

Approx Elo given equal time rather than equal visits (might NOT be accurate, varies with hardware)

Top Contributors

See here for a full list of contributors for kata1.

In the Last 24h

User Training Rows Training Games Rating Games
OmnipotentEntity 187,918 rows generated 3,844 training games 56 rating games
rwk 168,837 rows generated 3,443 training games 63 rating games
maxueba 151,968 rows generated 3,130 training games 60 rating games
Bubblesld 98,024 rows generated 2,011 training games 63 rating games
gnaij 94,058 rows generated 1,922 training games 68 rating games
ez4u 49,891 rows generated 1,065 training games 20 rating games
carton 34,987 rows generated 754 training games 12 rating games
Miles 32,969 rows generated 709 training games 8 rating games
dahuojiwo2 30,481 rows generated 668 training games 10 rating games
Odobenus 26,163 rows generated 536 training games 20 rating games
zhanghong64 26,145 rows generated 524 training games 16 rating games
peter 23,142 rows generated 482 training games 20 rating games
tenuki 22,246 rows generated 467 training games 8 rating games
YangZ 12,953 rows generated 282 training games 12 rating games
mmming0123 7,857 rows generated 160 training games 0 rating games

In the Last Week

User Training Rows Training Games Rating Games
zhongtiao1 1,644,140 rows generated 33,732 training games 273 rating games
yaoge123 1,505,205 rows generated 31,281 training games 396 rating games
rwk 1,194,309 rows generated 24,601 training games 404 rating games
maxueba 1,093,477 rows generated 22,655 training games 551 rating games
Bubblesld 740,629 rows generated 15,334 training games 494 rating games
OmnipotentEntity 702,093 rows generated 14,462 training games 219 rating games
maomaochong 653,139 rows generated 13,565 training games 0 rating games
gnaij 644,256 rows generated 13,204 training games 352 rating games
soya 495,800 rows generated 10,186 training games 234 rating games
ez4u 344,179 rows generated 7,193 training games 175 rating games
孙源辰 284,857 rows generated 5,906 training games 172 rating games
Miles 254,601 rows generated 5,239 training games 81 rating games
dahuojiwo2 242,056 rows generated 5,151 training games 74 rating games
Odobenus 156,221 rows generated 3,182 training games 84 rating games
tenuki 154,974 rows generated 3,186 training games 67 rating games


User Training Rows Training Games Rating Games
yaoge123 421,709,106 rows generated 8,418,198 training games 135,272 rating games
luckyangman 342,435,207 rows generated 6,418,062 training games 140,115 rating games
水底2022 260,997,256 rows generated 5,377,999 training games 126,468 rating games
Friday9i 164,193,275 rows generated 3,327,003 training games 44,140 rating games
AiqiGo 148,551,176 rows generated 2,819,086 training games 53,342 rating games
maomaochong 130,150,273 rows generated 2,660,801 training games 57,157 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 63,185,422 rows generated 1,306,794 training games 26,522 rating games
maxueba 59,579,199 rows generated 1,216,833 training games 28,068 rating games
badukmegapack 55,570,393 rows generated 1,092,504 training games 18,101 rating games
zhongtiao1 48,365,587 rows generated 1,018,605 training games 9,060 rating games
菜鸟老树 45,478,004 rows generated 924,134 training games 13,920 rating games