Am I in The Stack?

The Stack v3 is a 15.9 TB dataset of source code across 713 programming languages from 173M repositories, crawled from GitHub in 2025.

We want to give developers agency over their source code by letting them decide whether or not it should be used to develop and evaluate machine learning models.

Enter your GitHub username below to check if any of your repositories are in The Stack v3. If your code is found, you will get a pre-filled opt-out link that submits a properly formatted removal request on your behalf. Please use this tool to submit opt-out requests rather than opening issues manually — it ensures your request can be processed quickly and correctly.