GitHub Copilot, a tool for generating code suggestions, emerged from GitHub's collaboration with OpenAI's large language models (LLMs), particularly following the release of GPT-3 in 2020. Initially astonished by the capabilities of these models, GitHub engineers, including researchers like Alireza Goudarzi, explored using LLMs for code generation, which led to the development of Copilot. The journey from theoretical discussions to a practical, interactive tool involved assessing models by solving coding tasks and refining them through techniques like prompt crafting and fine-tuning. As OpenAI released more advanced models, such as the multilingual Codex, GitHub integrated these improvements to enhance Copilot's functionality, allowing it to provide more accurate, context-aware code suggestions. The continuing evolution of GitHub Copilot, marked by features like chat functionality and voice-assisted development, aims to transform the developer experience, culminating in the announcement of GitHub Copilot X, which seeks to extend AI capabilities beyond the IDE to other platform components.