COR Brief
AI ToolsData & AnalyticsLazypredict
Data & Analytics

Lazypredict

Lazypredict is an open-source Python library designed to quickly build and compare multiple basic machine learning models for classification and regression tasks with minimal coding effort. It automates the process of training various models without parameter tuning, providing performance metrics such as accuracy, balanced accuracy, ROC AUC, and training time to help users identify which models perform better on their datasets. The library supports both numerical and categorical features, including handling categorical columns based on cardinality, and integrates seamlessly with scikit-learn pipelines. The tool also offers MLflow integration for experiment tracking and allows users to input custom evaluation metrics. Lazypredict is distributed under the MIT license and can be installed easily via pip. Its last major update was in 2021, and it currently supports scikit-learn compatible models, excluding some previously included models like CatBoost. It is targeted at data scientists and machine learning practitioners who want to quickly generate baseline model comparisons without extensive coding or hyperparameter tuning.

Updated Feb 12, 2026open-source

Lazypredict is a Python library that automates building and comparing multiple basic machine learning models for classification and regression with minimal code.

Pricing
open-source
Category
Data & Analytics
Company
Interactive PresentationOpen Fullscreen ↗
01
Provides LazyClassifier and LazyRegressor classes to automatically build and compare multiple classification and regression models without parameter tuning.
02
Handles both numerical and categorical data, including splitting categorical columns into low and high cardinality pipelines for better processing.
03
Easily integrates with scikit-learn pipelines to fit into existing machine learning workflows.
04
Generates tables comparing models on metrics such as accuracy, balanced accuracy, ROC AUC, and training time to facilitate model selection.
05
Supports MLflow for experiment tracking to manage and record model training runs.
06
Allows users to input custom evaluation metrics and returns predictions as DataFrames for further analysis.

Baseline Model Comparison

Data scientists need to quickly evaluate multiple machine learning models on a new dataset to identify promising candidates without extensive coding or tuning.

1
Install Lazypredict
Run pip install lazypredict to install the library.
2
Import Required Classes
Import LazyClassifier or LazyRegressor from lazypredict.Supervised depending on your task.
3
Prepare Data
Split your dataset into training and testing sets using scikit-learn's train_test_split.
4
Fit Models and Compare
Instantiate the classifier or regressor and call the fit method with training and testing data to get model performance comparisons.
5
Review Results
Examine the output DataFrame showing model rankings by metrics such as accuracy and training time.
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Strategic Context for Lazypredict

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Pricing
Model: open-source

Lazypredict is free software released under the MIT license.

Assessment
Strengths
  • Requires minimal code to compare dozens of models (as few as three lines).
  • Automatically handles both numerical and categorical features, including cardinality-based processing.
  • Provides multiple performance metrics and training time for each model to aid comparison.
  • Integrates with MLflow for experiment tracking.
  • Free and open-source under the MIT license.
Limitations
  • Uses basic models without parameter tuning, so results may not reflect optimized model performance.
  • Last major updates were in 2021; some models like CatBoost have been removed.
  • Limited to scikit-learn compatible models and does not support advanced custom architectures.