Core ML is an Apple framework to integrate machine learning models into your app.

Use the coremltools Python package to convert models from third-party training libraries such as TensorFlow and PyTorch to the Core ML format. You can then use Core ML to integrate the models into your app.

Core ML provides a unified representation for all models. Your app uses Core ML APIs and user data to make predictions, and to fine-tune models, all on the user’s device. Running a model strictly on the user’s device removes any need for a network connection, which helps keep the user’s data private and your app responsive.

Core ML optimizes on-device performance by leveraging the CPU, GPU, and Neural Engine while minimizing its memory footprint and power consumption.

Additional resources

• The Machine Learning page provides educational material, tutorials, guides, and documentation for Apple developers.
• The WWDC session videos are a great place to start if you are new to machine learning technology and Core ML.
• The Core ML documentation walks you through the first steps in developing an app with a machine learning model.

What is coremltools?

The coremltools Python package is the primary way to convert third-party models to the Core ML format.

With coremltools, you can do the following:

• Convert trained models from frameworks such as TensorFlow and PyTorch to the Core ML format.
• Read, write, and optimize Core ML models.
• Verify conversion/creation in macOS by making predictions using Core ML.

You can convert trained models from the following frameworks to Core ML format: