Yes, Nano Banana 2 is fully open source. The core library and all official SDKs are published under the Apache 2.0 license, which permits use in both commercial and non-commercial projects. You are free to integrate Nano Banana 2 into proprietary software, distribute modified versions, and incorporate it into products you sell, as long as you retain the required attribution notices. Apache 2.0 is one of the most permissive and widely understood open-source licenses, which is part of why it was chosen for this project.
The source code is hosted on GitHub, and the project follows an open development model. Bug reports, feature requests, and pull requests from the community are actively reviewed and merged. The project uses GitHub Issues for tracking bugs and GitHub Discussions for broader design conversations. Major feature additions go through a lightweight proposal process where the design is shared publicly before implementation begins, giving community members a chance to provide input.
Release artifacts—including compiled binaries and language-specific packages—are signed using GPG and published to their respective package registries (PyPI for Python, the Go module proxy for Go, crates.io for Rust). Checksums are included in each release so you can verify the integrity of what you download. If your organization has requirements around software supply chain security, the project also publishes a Software Bill of Materials (SBOM) with each release.