Microsoft announced making GitHub Copilot in VS Code open-source during Microsoft Build 2025.VS Code team believes in open and AI-powered editor experience, staying true to open development principles.GitHub Copilot Chat extension will be open-sourced under the MIT license to address needs of organizations.Open sourcing is expected to support third-party extension developers by providing easier access to source code.Microsoft will begin open-sourcing Copilot Chat and migrating components into VS Code's core.Transition to open source for AI efforts in VS Code was motivated by significant shifts in AI development.VS Code's open-sourcing aims to empower the community to refine and build upon AI interaction elements.Visual Studio Code has reached 40 million users, making it the most widely adopted editor among developers.Microsoft introduced a new coding agent for GitHub Copilot to automate tasks like bug fixes and small features.Agentic DevOps reimagines traditional DevOps, where intelligent agents collaborate with developers to optimize the software lifecycle.