CatBoost is an open-source gradient boosting on decision trees library with categorical features support out of the box for Python, R
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Website | Documentation | Installation | Release Notes

License PyPI version

CatBoost is a machine learning method based on gradient boosting over decision trees.

Main advantages of CatBoost:

  • Superior quality when compared with other GBDT libraries.
  • Best in class inference speed.
  • Support for both numerical and categorical features.
  • Fast GPU and multi-GPU support for training (compiled binaries and python package for learning on one host, build cmd-line MPI version from source to learn on several GPU machines).
  • Data visualization tools included.

Get Started and Documentation

All CatBoost documentation is available here.

Install CatBoost by following the guide for the

Next you may want to investigate:

Catboost models in production

If you want to evaluate Catboost model in your application read model api documentation.

Questions and bug reports

Help to Make CatBoost Better

  • Check out help wanted issues to see what can be improved, or open an issue if you want something.
  • Add your stories and experience to Awesome CatBoost.
  • To contribute to CatBoost you need to first read CLA text and add to your pull request, that you agree to the terms of the CLA. More information can be found in
  • Instructions for contributors can be found here.


Latest news are published on twitter.

Reference Paper

Anna Veronika Dorogush, Andrey Gulin, Gleb Gusev, Nikita Kazeev, Liudmila Ostroumova Prokhorenkova, Aleksandr Vorobev "Fighting biases with dynamic boosting". arXiv:1706.09516, 2017.

Anna Veronika Dorogush, Vasily Ershov, Andrey Gulin "CatBoost: gradient boosting with categorical features support". Workshop on ML Systems at NIPS 2017.


© YANDEX LLC, 2017-2018. Licensed under the Apache License, Version 2.0. See LICENSE file for more details.