Issues

• Integrate with ONNX 1.23.0 release branch

  onnx/onnxmltools#799 · Filter by author sfatimar opened on Sep 2, 2026

• ONNX model must specify opset version for default domain

  onnx/onnxmltools#783 · Filter by author incf-ai opened on Jul 2, 2026
  1

• Integrate with ONNX 1.22.0 release branch

  onnx/onnxmltools#767 · Filter by author cbourjau opened on Jun 2, 2026

• Integrate with ONNX 1.21.0 release branch

  onnx/onnxmltools#760 · Filter by author Sunny-Anand opened on Mar 8, 2026

• find_type_conversion deleted, but convert_coreml tools needs it

  onnx/onnxmltools#735 · Filter by author ethiel opened on Oct 31, 2025
  2

• Support PerpetualBooster

  onnx/onnxmltools#729 · Filter by author deadsoul44 opened on Sep 25, 2025
  1

• Converted LGBMClassifier gives inconsistent predictions

  lightgbm
  onnx/onnxmltools#728 · Filter by author mkoruszowic opened on Sep 19, 2025

• Tweedie objective not supported for XGBoost

  xgboost
  onnx/onnxmltools#725 · Filter by author meakbiyik opened on Jun 17, 2025
  1

• Converting an h5 model to ONNX using convert_keras introduces transpose node, but model produces wrong results.

  onnx/onnxmltools#719 · Filter by author luludak opened on May 28, 2025

• onnxmltools.convert_keras leads to parameters missing from target model

  onnx/onnxmltools#716 · Filter by author luludak opened on May 27, 2025

• cannot use current textClassifier model ValueError: Unsupported shape calculation for operator textClassifier

  onnx/onnxmltools#711 · Filter by author hopye opened on Mar 28, 2025
  1

• LightGBM: Support for outputting decision path and leaf

  lightgbm
  onnx/onnxmltools#710 · Filter by author ajryan opened on Feb 10, 2025
  3

  

• convert_lightgbm incorrectly saves onnx format

  lightgbm
  onnx/onnxmltools#708 · Filter by author msnilsen opened on Jan 9, 2025
  1

• GBTRegressor to ONNX output looks like Classifier

  onnx/onnxmltools#703 · Filter by author MelihAkdag opened on Oct 21, 2024
  1

• Updating DEFAULT_OP_BLOCK_LIST to different ONNX opsets

  onnx/onnxmltools#699 · Filter by author gedoensmax opened on Jul 22, 2024
  1

• ModuleNotFoundError: No module named 'pkg_resources' for Python 3.12+

  onnx/onnxmltools#698 · Filter by author kevalmorabia97 opened on Jul 15, 2024
  2

• Spark XGB converter accesses missing param improperly

  xgboost
  onnx/onnxmltools#697 · Filter by author addisonklinke opened on Jul 1, 2024
  4

• Adding support for SHAP explainability to tree model types

  pending user response
  onnx/onnxmltools#695 · Filter by author kikisq7 opened on Jun 10, 2024
  3

  

• Fail to import BlobReader from libmilstoragepython. No module named 'coremltools.libmilstoragepython'

  onnx/onnxmltools#693 · Filter by author longge-vision opened on May 31, 2024
  1

• UNABLE_TO_INFER_SCHEMA on pyspark

  onnx/onnxmltools#677 · Filter by author cometta opened on Jan 18, 2024

• onnx converted : xgboostRegressor multioutput model predicts 1 dimension instead of original 210 dimensions.

  xgboost
  onnx/onnxmltools#676 · Filter by author devspatron opened on Jan 16, 2024
  6

• XGBRegressor conversion to onnx gives wrong predictions for xgboost 2.0

  xgboost
  onnx/onnxmltools#672 · Filter by author veselina-marinova-cresset opened on Dec 19, 2023

• XGBClassifier conversion to onnx gives wrong predictions if dataset has only 2 categories (xgboost 2.0)

  xgboost
  onnx/onnxmltools#671 · Filter by author veselina-marinova-cresset opened on Dec 19, 2023

• Mismatch between XGBoost and converted onnx, with respect to "colsample_bytree"

  xgboost
  onnx/onnxmltools#667 · Filter by author chunhaoIcici opened on Nov 26, 2023

• TreeEnsembleRegressor introduces an additional batch dimension

  onnx/onnxmltools#664 · Filter by author pvardanis opened on Nov 10, 2023
  2