Antigravity AI IDE Tutorial: Free Access to Gemini 3 Pro & Sonnet 4.5

# Antigravity AI IDE Tutorial: Free Access to Gemini 3 Pro & Sonnet 4.5 ## 🚀 Antigravity: The New AI Editor with Free Access to Gemini 3 Pro **Antigravity**, a new AI editor, has recently gained significant attention due to its launch alongside Google's **Gemini 3 Pro** model. Its biggest draw is offering users free, quota-based access to the powerful Gemini 3 Pro and Sonnet 4.5 models. Although limited by a quota that refreshes every 5 hours, this provides a fantastic opportunity for developers to experience cutting-edge AI. This video serves as a beginner-friendly guide to help you master the core features of Antigravity. --- ## 🛠️ Installation & Initial Setup 1. **Download**: Head to the official Antigravity website, select your operating system (Windows, macOS, Linux supported), and install the application. 2. **Login**: After installation, the app will guide you to log in with your Google account. 3. **Network Requirements**: * **Important**: For regions where Gemini 3 Pro is not officially supported, you'll need to use a VPN and switch to a supported region. * You must also keep **TUN mode enabled** for a stable connection. --- ## 🤖 Core Functionality: Collaborating with the AI Agent Most interactions in Antigravity happen in the **Agent window** on the right side. ### Model Selection & Work Modes * **Work Modes**: * `planning`: Designed for complex, multi-step tasks (default setting). * `fast`: Ideal for simple, one-shot modifications. * **AI Models**: * **Gemini 3 Pro**: Recommended for UI design and front-end development (e.g., HTML, Vue.js). It's best to choose the `High` version, as it consumes the same quota as the `Low` version. * **Sonnet 4.5**: Recommended for back-end programming (e.g., PHP, Python). Similarly, select the `Thinking` version for the best results with the same quota cost. * **Quota Info**: Gemini and Sonnet have separate quota pools, with a ratio of approximately 1:3 (e.g., 10 Gemini runs are equivalent to about 30 Sonnet runs). ### Practical Example: Modifying Code 1. **Add Context**: In your project, select the file you want to modify and use the shortcut (`Cmd+L` on macOS) to add it to the Agent's context. 2. **Give Instructions**: Clearly describe your request in the prompt box, such as, \"Change the color of this element to red using a built-in Bootstrap class.\" 3. **Execute & Review**: The AI will automatically modify the code. Once done, you have the option to: * `accept`: Apply the changes and save the file. * `reject`: Discard the changes and revert to the original code. * `accept all` / `reject all`: Process all suggested changes at once. Alternatively, you can select code directly in the editor and press `Cmd+I` (macOS) to bring up an inline AI window for quick edits, though model options are more limited here. --- ## ⚙️ Advanced Features: Project-Level Customization To make the AI better understand your project's specific requirements, Antigravity offers powerful customization features. ### Rules: Setting a Permanent Memory **Rules** act as a permanent \"project brief\" for the AI. You can create global or project-level rule files. * **Global Rules (`gemini.md`)**: Apply to all your projects and are used to define general coding styles, language preferences, etc. * **Project-Level Rules**: Specific to a single project, you can detail the project's structure, tech stack, and design guidelines. Set rules to apply automatically to ensure the AI follows them in every interaction. ### Workflows: Creating Reusable Task Flows **Workflows** are preset sets of instructions designed for handling specific, repetitive tasks. * **Creation**: You can create different workflows for various tasks, such as an `html worker` or a `vue worker`. * **Usage**: In the Agent's input box, type `/` to see and select an available workflow, then add your specific task. This greatly improves efficiency and consistency for recurring jobs. --- ## 🌟 More Features & Conclusion * **Agent Manager**: A separate window for managing your Workspaces, conversation history, and a project-independent **Playground** for freeform experimentation. * **Inbox**: When running multiple tasks simultaneously, the Inbox will notify you upon completion, facilitating an efficient multi-tasking workflow. * **MCP**: While supported, it's generally not necessary for beginners, as Antigravity comes with powerful built-in code retrieval and search capabilities. ### Summary **Antigravity** is an easy-to-use, powerful, and promising new AI IDE. It lowers the barrier to entry for top-tier AI models and provides deep customization through features like `rules` and `workflows`. If you want to experience the future of coding with Gemini 3 Pro for free, Antigravity is a must-try.