Open-Source Platform for Productionizing AI
MLflow is an open-source developer platform to build AI/LLM applications and models with confidence. Enhance your AI applications with end-to-end experiment tracking, observability, and evaluations, all in one integrated platform.
🚀 Installation
To install the MLflow Python package, run the following command:
📦 Core Components
MLflow is the only platform that provides a unified solution for all your AI/ML needs, including LLMs, Agents, Deep Learning, and traditional machine learning.
💡 For LLM / GenAI Developers
🎓 For Data Scientists
🌐 Hosting MLflow Anywhere
You can run MLflow in many different environments, including local machines, on-premise servers, and cloud infrastructure.
Trusted by thousands of organizations, MLflow is now offered as a managed service by most major cloud providers:
For hosting MLflow on your own infrastructure, please refer to this guidance.
🗣️ Supported Programming Languages
🔗 Integrations
MLflow is natively integrated with many popular machine learning frameworks and GenAI libraries.
Usage Examples
Experiment Tracking (Doc)
The following examples trains a simple regression model with scikit-learn, while enabling MLflow's autologging feature for experiment tracking.
import mlflow from sklearn.model_selection import train_test_split from sklearn.datasets import load_diabetes from sklearn.ensemble import RandomForestRegressor # Enable MLflow's automatic experiment tracking for scikit-learn mlflow.sklearn.autolog() # Load the training dataset db = load_diabetes() X_train, X_test, y_train, y_test = train_test_split(db.data, db.target) rf = RandomForestRegressor(n_estimators=100, max_depth=6, max_features=3) # MLflow triggers logging automatically upon model fitting rf.fit(X_train, y_train)
Once the above code finishes, run the following command in a separate terminal and access the MLflow UI via the printed URL. An MLflow Run should be automatically created, which tracks the training dataset, hyper parameters, performance metrics, the trained model, dependencies, and even more.
Evaluating Models (Doc)
The following example runs automatic evaluation for question-answering tasks with several built-in metrics.
import mlflow import pandas as pd # Evaluation set contains (1) input question (2) model outputs (3) ground truth df = pd.DataFrame( { "inputs": ["What is MLflow?", "What is Spark?"], "outputs": [ "MLflow is an innovative fully self-driving airship powered by AI.", "Sparks is an American pop and rock duo formed in Los Angeles.", ], "ground_truth": [ "MLflow is an open-source platform for productionizing AI.", "Apache Spark is an open-source, distributed computing system.", ], } ) eval_dataset = mlflow.data.from_pandas( df, predictions="outputs", targets="ground_truth" ) # Start an MLflow Run to record the evaluation results to with mlflow.start_run(run_name="evaluate_qa"): # Run automatic evaluation with a set of built-in metrics for question-answering models results = mlflow.evaluate( data=eval_dataset, model_type="question-answering", ) print(results.tables["eval_results_table"])
Observability (Doc)
MLflow Tracing provides LLM observability for various GenAI libraries such as OpenAI, LangChain, LlamaIndex, DSPy, AutoGen, and more. To enable auto-tracing, call mlflow.xyz.autolog() before running your models. Refer to the documentation for customization and manual instrumentation.
import mlflow from openai import OpenAI # Enable tracing for OpenAI mlflow.openai.autolog() # Query OpenAI LLM normally response = OpenAI().chat.completions.create( model="gpt-4o-mini", messages=[{"role": "user", "content": "Hi!"}], temperature=0.1, )
Then navigate to the "Traces" tab in the MLflow UI to find the trace records OpenAI query.
💭 Support
- For help or questions about MLflow usage (e.g. "how do I do X?") visit the documentation.
- In the documentation, you can ask the question to our AI-powered chat bot. Click on the "Ask AI" button at the right bottom.
- Join the virtual events like office hours and meetups.
- To report a bug, file a documentation issue, or submit a feature request, please open a GitHub issue.
- For release announcements and other discussions, please subscribe to our mailing list (mlflow-users@googlegroups.com) or join us on Slack.
🤝 Contributing
We happily welcome contributions to MLflow!
- Submit bug reports and feature requests
- Contribute for good-first-issues and help-wanted
- Writing about MLflow and sharing your experience
Please see our contribution guide to learn more about contributing to MLflow.
⭐️ Star History
✏️ Citation
If you use MLflow in your research, please cite it using the "Cite this repository" button at the top of the GitHub repository page, which will provide you with citation formats including APA and BibTeX.
👥 Core Members
MLflow is currently maintained by the following core members with significant contributions from hundreds of exceptionally talented community members.

