1How GitHub Copilot WorksGitHub Copilot turns nearby code and comments into a prompt for a language model, then returns likely code for the developer to accept, edit, or ignore.Copilot 2Custom InstructionsCustom instructions are standing directions that shape an AI assistant’s behavior before each task begins.Copilot 3Prompt FilesPrompt files turn one-off instructions for an AI model into reusable, reviewable assets that teams can improve over time.Copilot 4Instructions FilesInstructions files turn scattered project knowledge into clear guidance that artificial intelligence assistants can use while they work.Copilot 5SkillsA skill is the ability to produce a useful result reliably, and it grows through practice, feedback, context, and judgment.Copilot