ChatGPT Microphone is a Chrome extension that allows ChatGPT users to add voice-to-text and shortcut snippets to their conversations. It has a seamlessly integrated microphone button that converts speech to text quickly and accurately. The tool is free and open-source, with a dark and light mode to match ChatGPT's interface. Users can contribute to its development through GitHub. The tool is compatible with Google Chrome only and has a privacy policy to ensure user data is not used for purposes unrelated to the tool's core functionality.