Prebuilding codespaces is now generally available, offering a streamlined, "ready-to-go" template that includes pre-installed source code, editor extensions, project dependencies, and configurations to expedite the setup process for new codespaces, particularly beneficial for complex or large codebases. Following its public beta, feedback has led to enhancements such as scheduled prebuilds, failure notifications, and improved readiness indicators. This feature has notably benefited companies like Vanta, reducing developer onboarding time from days to minutes. Repository administrators can manage prebuild configurations through various triggers—every push, configuration change, or a custom schedule—allowing for optimized trade-offs between environment freshness and GitHub Actions usage. Additionally, billing for prebuilds involves costs for Actions minutes and storage, with options to manage storage costs through template retention settings. Available on GitHub Enterprise Cloud and GitHub Team plans, this feature aims to support monorepos and multi-repository scenarios in the future, with ongoing improvements driven by user feedback.