Issues

• unexpected model_shrink_rate default change

  catboost/catboost#3205 · Filter by author sergandri opened on Oct 2, 2026

• Pool cannot reload saved quantization borders containing infinity

  catboost/catboost#3203 · Filter by author Lambdaderta opened on Sep 28, 2026

• CPU CTR split rounding causes cached validation and predict to disagree

  catboost/catboost#3202 · Filter by author Lambdaderta opened on Sep 28, 2026

• Add Node package tests to CI

  ciNode_js
  Task

  catboost/catboost#3196 · Filter by author andrey-khropov opened on Sep 17, 2026

• Add Rust package tests to CI

  ciinferenceRust
  Task

  catboost/catboost#3195 · Filter by author andrey-khropov opened on Sep 17, 2026

• [CMake build cache] Select the most recent revision from those available in history

  ci
  Feature

  catboost/catboost#3191 · Filter by author andrey-khropov opened on Sep 10, 2026
  

• Add a parameter to set k-folds and train similarly to K-fold cross-validation for Ordered Boosting

  Feature

  catboost/catboost#3188 · Filter by author asdsadsaasd12312132 opened on Sep 7, 2026
  2

• [Suggestion] Plain + Ordered Boosting mode

  Feature

  catboost/catboost#3187 · Filter by author asdsadsaasd12312132 opened on Sep 5, 2026

• Add tests for models exported as code to CI

  tests
  Task

  catboost/catboost#3173 · Filter by author andrey-khropov opened on Aug 23, 2026

• [Generated C++ code applier] support C++ standards < 20 for models with categorical features

  inference
  catboost/catboost#3172 · Filter by author andrey-khropov opened on Aug 23, 2026
  1

• n_features_in_ is 0 for models restored via load_model, pickle, or deepcopy

  catboost/catboost#3145 · Filter by author stohirov opened on Jul 19, 2026
  1

• JSON model loader silently accepts malformed leaf_values (count not a multiple of 2^depth), producing a wrong ApproxDimension

  catboost/catboost#3137 · Filter by author FuturMix opened on Jul 16, 2026

• shrink(1) changes multiclass predictions instead of preserving the first tree (CatBoostClassifier 1.2.8 and 1.2.10)

  catboost/catboost#3136 · Filter by author eseglo opened on Jul 15, 2026
  1

• deadlock on a machine with a mixed-core ARM64 CPU

  LinuxNeed Research
  Bug

  catboost/catboost#3126 · Filter by author andrey-khropov opened on Jul 9, 2026
  1

• Python wheels missing license file

  python
  catboost/catboost#3118 · Filter by author david-cortes opened on Jun 18, 2026
  1

• Applicability of CatBoost on small dataset (n=96) for environmental geochemical modeling

  catboost/catboost#3117 · Filter by author tulipabiflora2006 opened on Jun 12, 2026
  4

• get_feature_names functionality was broken for R

  R
  catboost/catboost#3116 · Filter by author anatolix opened on Jun 11, 2026

• [GPU] Histogram launch divides by zero on an empty grid (host SIGFPE)

  catboost/catboost#3114 · Filter by author jeffdaily opened on Jun 10, 2026

• [GPU] Optimal-leaf-value kernel (MAE/MAPE/Quantile) bounds by object count instead of leaf count

  catboost/catboost#3113 · Filter by author jeffdaily opened on Jun 10, 2026

• [GPU] One-hot split predicate overflows ui32 in shifted space, causing spurious matches

  catboost/catboost#3112 · Filter by author jeffdaily opened on Jun 10, 2026

• FP16 learning and inference support with using tensor cores

  GPU
  Feature

  catboost/catboost#3110 · Filter by author M0nteCarl0 opened on Jun 8, 2026

• Support Windows on ARM CPUs

  buildinstallationWindows
  Feature

  catboost/catboost#3104 · Filter by author andrey-khropov opened on Jun 1, 2026
  1

• load_model from blob or stream ignores the Poisson link function and returns RawFormulaVal

  catboost/catboost#3103 · Filter by author i-d-lytvynenko opened on May 30, 2026
  1

• Feature Request: Pool initialization from Parquet file

  Feature

  catboost/catboost#3098 · Filter by author ibobak opened on May 22, 2026

• [Feature Request] Support PRAUC metric on GPU

  GPUobjectives and metrics
  Feature

  catboost/catboost#3094 · Filter by author contepablod opened on May 15, 2026