Getting Started with Gemini 3: Hello World with Gemini 3 Flash

The Gemini 3 family of models, our most intelligent yet, features state-of-the-art reasoning to help you learn, build, and plan anything. Within this family, Gemini 3 Flash is designed for speed and efficiency, offering high performance in complex reasoning, multimodal understanding, agentic, and "vibe coding" tasks with Flash-level latency and cost. This blend of powerful reasoning and efficiency makes it ideal for enabling everyday tasks and highly effective agentic workflows.

As a developer, you can integrate Gemini 3 Flash immediately into your applications via Google AI Studio and Vertex AI for Enterprises. 

In this blog, we'll show how you can write your first piece of code to invoke the Gemini model by acquiring an API key from Google AI Studio and developing with the Google GenAI SDK.

Step 1: Get an API Key

Google AI Studio offers the fastest path from prompt to production with Gemini by letting you ...