Overview
The Stack is the largest open code dataset, containing 6.4TB of source code from 358 programming languages collected from permissive-license GitHub repositories. Created by BigCode, it includes a governance framework for developer opt-out.
What’s In It
The Stack v1 contains 6.4TB of deduplicated source code from GitHub repositories with permissive licenses. It covers 358 programming languages identified by file extension. Near-deduplication removes repetitive boilerplate code.
How It’s Used
The Stack provides training data for StarCoder, SantaCoder, and numerous other code models. Its permissive-license filtering makes derived models suitable for commercial deployment.
Controversies
The Am I In The Stack tool lets developers opt out, but the default is opt-in. Debates continue about whether open-source licenses implicitly cover AI training.