GitHub Copilot is an AI-powered code completion tool developed by GitHub in collaboration with OpenAI. It assists developers by suggesting whole lines or entire functions of code directly within their integrated development environment (IDE). By analyzing the context of the code being written, Copilot can predict and offer relevant suggestions, significantly speeding up the coding process and reducing the likelihood of errors. Beyond simple autocompletion, GitHub Copilot can help developers discover new APIs, write tests, and even translate code between different programming languages. It acts as an intelligent pair programmer, allowing developers to focus on higher-level problem-solving and architectural design while automating repetitive coding tasks.