Google AI Studio is a free, browser-based development environment for building with Google's Gemini family of multimodal AI models. It serves as the fastest way to prototype, test, and deploy AI-powered applications using the Gemini API. The platform provides direct access to the latest Gemini models including Gemini 3 Pro, Gemini 3 Flash, and experimental releases, all without any subscription cost. Users can experiment with text, image, audio, and video inputs in a unified interface, making it ideal for multimodal AI development. Google AI Studio features a Prompt Gallery with curated prompt templates, a Generate Media page for creating images with Imagen, videos with Veo, and music with Lyria, and native code generation capabilities. The platform supports structured output in JSON, function calling for tool use, and grounding with Google Search for real-time information. For production deployment, the Gemini API offers a generous free tier with rate-limited access to most models, and a paid tier with pricing starting at $0.10 per million tokens for Flash-Lite up to $2.00 per million input tokens for Gemini 3 Pro Preview. The platform recently separated billing from Google Cloud to simplify payments for independent developers. With support for native audio dialog featuring 30+ voice options, system instructions, and safety settings, Google AI Studio has become the essential starting point for any developer looking to build with Gemini.