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, 1123 distinct users have uploaded 3,149,751,842 rows of training data, 62,149,610 training games, and 1,318,742 rating games.

In the last week, 49 distinct users have uploaded 5,824,853 rows of training data, 122,300 new training games, and 1,707 new rating games.

In the last 24h, 31 distinct users have uploaded 1,451,182 rows of training data, 30,573 new training games, and 388 new rating games.

Look up and view games for this run here.


A total of 749 networks have been uploaded for kata1.

Latest network: kata1-b28c512nbt-s7382862592-d4374571218

Strongest confidently-rated network: kata1-b28c512nbt-s7168446720-d4316919285

Approximate Elo Ratings Graph
Graph is based on about 1,318,742 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
maverick 486,062 rows generated 10,206 training games 160 rating games
maomaochong 194,442 rows generated 4,167 training games 0 rating games
TheOnly92 148,102 rows generated 3,087 training games 32 rating games
rwk 129,001 rows generated 2,721 training games 32 rating games
maxueba 109,469 rows generated 2,296 training games 55 rating games
Bubblesld 70,076 rows generated 1,474 training games 32 rating games
dahuojiwo2 55,845 rows generated 1,171 training games 8 rating games
toledo 34,635 rows generated 744 training games 8 rating games
ez4u 33,373 rows generated 706 training games 16 rating games
Miles 29,965 rows generated 606 training games 0 rating games
AAAA 29,485 rows generated 600 training games 8 rating games
Dreamygo 27,896 rows generated 562 training games 0 rating games
ghk 23,567 rows generated 481 training games 8 rating games
孙源辰 23,100 rows generated 518 training games 0 rating games
家疼跑谱 14,930 rows generated 367 training games 5 rating games

In the Last Week

User Training Rows Training Games Rating Games
TheOnly92 1,036,615 rows generated 21,627 training games 200 rating games
rwk 688,601 rows generated 14,391 training games 136 rating games
maxueba 653,688 rows generated 13,663 training games 259 rating games
maomaochong 492,198 rows generated 10,558 training games 0 rating games
maverick 486,062 rows generated 10,206 training games 160 rating games
Bubblesld 474,744 rows generated 9,871 training games 200 rating games
dahuojiwo2 270,907 rows generated 5,767 training games 51 rating games
Dreamygo 232,665 rows generated 4,912 training games 64 rating games
ez4u 212,899 rows generated 4,475 training games 100 rating games
Miles 207,033 rows generated 4,255 training games 0 rating games
孙源辰 161,312 rows generated 3,402 training games 48 rating games
toledo 147,417 rows generated 3,108 training games 36 rating games
Odobenus 134,332 rows generated 2,779 training games 44 rating games
lbnmg 100,802 rows generated 2,096 training games 48 rating games
YangZ 72,339 rows generated 1,477 training games 24 rating games


User Training Rows Training Games Rating Games
yaoge123 424,579,640 rows generated 8,478,744 training games 136,133 rating games
luckyangman 342,435,207 rows generated 6,418,062 training games 140,115 rating games
水底2022 264,920,064 rows generated 5,461,179 training games 127,379 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 133,735,088 rows generated 2,737,049 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
TheOnly92 75,401,598 rows generated 1,561,359 training games 29,014 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
maxueba 65,062,120 rows generated 1,331,061 training games 30,401 rating games
badukmegapack 55,637,383 rows generated 1,093,943 training games 18,107 rating games
zhongtiao1 48,365,587 rows generated 1,018,605 training games 9,060 rating games
OmnipotentEntity 48,346,315 rows generated 971,888 training games 15,436 rating games