# Welcome to the Gemini API Cookbook
This cookbook provides a structured learning path for using the Gemini API, focusing on hands-on tutorials and practical examples.
**For comprehensive API documentation, visit [ai.google.dev](https://ai.google.dev/gemini-api/docs).**
**For Gemma quickstarts and examples, check out the [Gemma cookbook](https://github.com/google-gemma/cookbook).**
---
> **Gemini 4 Argon**: Build with our frontier reasoning model featuring long decode continuation up to 1M output tokens (in a unified 1M input-output context window) and tunable thinking levels (`low`, `medium`, `high`). Get started with the [Get Started](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb#gemini4) and [Thinking](./quickstarts/Get_started_thinking.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_thinking.ipynb#gemini4) guides, including the [migration guide](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb#gemini4migration).
>
> **Gemini 3.8 Flash**: Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows. Get started with the [Get Started](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb#gemini3) and the [thinking](./quickstarts/Get_started_thinking.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_thinking.ipynb#gemini3) guides.
>
> **๐๏ธ Gemini 3.8 TTS & Custom Voices**: Generate expressive single- and multi-speaker speech with [Gemini 3.8 TTS](./quickstarts/Get_started_TTS.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_TTS.ipynb), and design custom voices from text or replicate voices from audio with the new [Voices guide](./quickstarts/Get_Started_Voices.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Voices.ipynb)!
>
> **Omni Flash**: The Nano Banana of video editing is here! Learn how to call the model using the interactions API, edit videos with natural language and more [here](./quickstarts/Get_started_Omni.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Omni.ipynb)!
>
> **๐ Nano-Banana 2.1**: Go bananas with our latest image generation model: **Nano-Banana 2.1**. Get started [here](./quickstarts/Get_Started_Nano_Banana.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Nano_Banana.ipynb#nano-banana-pro) with 512px, thinking, search and image grounding, and a ton of examples!
>
> **๐ถ Lyria 3.5**: Channel your inner composer with **Lyria 3.5**. Get started [here](./quickstarts/Get_started_Lyria.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Lyria.ipynb) with full song generation, image-to-music, and a ton of examples!
>
> **Agents API**: Create and run your custom agents using the new [Antigravity agent](./quickstarts/Get_started_managed_agents.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_managed_agents.ipynb)!
>
---
## Navigating the Cookbook
This cookbook is organized into two main categories:
1. **[Quick Starts](https://github.com/google-gemini/cookbook/tree/main/quickstarts/):** Step-by-step guides covering both introductory topics ("[Get Started](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb)") and specific API features.
2. **[Examples](https://github.com/google-gemini/cookbook/tree/main/examples/):** Practical use cases demonstrating how to combine multiple features.
We also showcase **Demos** in separate repositories, illustrating end-to-end applications of the Gemini API.
## What's New?
Here are the recent additions and updates to the Gemini API and the Cookbook:
* **Gemini 4 Argon**: Our flagship frontier reasoning model built for complex software engineering, deep mathematical and scientific problem solving, autonomous multi-step agents, and long decode continuation up to 1M output tokens. Learn how to build with `gemini-4-argon` in the [Get Started guide](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb#gemini4).
* **๐๏ธ Gemini 3.8 TTS, Voice Design & Voice Replication**: Generate expressive single- and multi-speaker speech with the [TTS quickstart](./quickstarts/Get_started_TTS.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_TTS.ipynb), and design custom voices from text or replicate voices from audio with [Voices (Voice Design & Replication)](./quickstarts/Get_Started_Voices.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Voices.ipynb).
* **Gemini 3.8 Flash**: Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows. Learn how to build with the model in the [Getting started cookbook](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb).
* **Gemini 3.5 Flash-Lite**: The fastest, lowest-cost model in the 3.5 family. Outperforms prior Flash-Lite generations for high-throughput execution. Learn more in the [Getting started cookbook](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb).
* **Omni Flash**: Get started with conversational video generation and editing using Gemini Omni Flash and the Interactions API in the [Omni Flash guide](./quickstarts/Get_started_Omni.ipynb)! [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Omni.ipynb)
* **Agents API**: Create and run agents using the [Antigravity agent](./quickstarts/Get_started_managed_agents.ipynb) [Antigravity agent](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_managed_agents.ipynb) in a controlled environment.
* **Webhooks**: Get real-time notifications for async operations like batch jobs and video generation with the [Webhooks quickstart](./quickstarts/Webhooks.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Webhooks.ipynb).
* **Inference tiers**: Learn how to use the Priority and Flex tiers in the [Inference tiers guide](./quickstarts/Inference_tiers.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Inference_tiers.ipynb) to help you balance speed, cost, and reliability.
* **๐ถ Lyria 3.5 & Lyria RealTime**: Convert your ideas into [songs](./quickstarts/Get_started_Lyria.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Lyria.ipynb) with full control over the music structure, or generate interactive live music streams with [Lyria RealTime](./quickstarts/Get_started_LyriaRealTime.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_LyriaRealTime.ipynb)!
* **๐ Nano-Banana 2.1 & Pro:** Use [Gemini's native image generation](./quickstarts/Get_Started_Nano_Banana.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Nano_Banana.ipynb) capabilities to edit images with high consistency or generate visual stories. Experience **Nano-Banana 2** for high speed or **Nano-Banana Pro** for 4K qualityโboth now with thinking and search grounding!
* **File Search:** Discover how to ground generations in your own data in a hosted RAG system with the [File Search quickstart](./quickstarts/File_Search.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/File_Search.ipynb).
* **Grounding with Google Maps:** Get started using factual geographical data from ๐ Google Maps in your apps! See the Google Maps section of the [Grounding Guide](./quickstarts/Grounding.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Grounding.ipynb).
* **Gemini Robotics-ER 1.5**: Learn about this new Gemini model specifically for spatial understanding and reasoning for [robotics applications](./quickstarts/gemini-robotics-er.ipynb). [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/gemini-robotics-er.ipynb)
* **Gemini Transcribe**: Transcribe audio files and live audio streams with word-level timestamps, speaker diarization, custom vocabulary, and smart transcription in the [Gemini Transcribe guide](./quickstarts/Get_started_transcribe.ipynb)! [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_transcribe.ipynb)
* **Live API & Live Translation**: Get started with the [multimodal Live API](./quickstarts/Get_started_LiveAPI.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_LiveAPI.ipynb) for low-latency voice/video streaming, or the [Live Translation API](./quickstarts/Get_started_LiveTranslate.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_LiveTranslate.ipynb) to translate audio streams in real-time.
* **Recently Added Guides:**
* [Voices (Voice Design & Replication)](./quickstarts/Get_Started_Voices.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Voices.ipynb): Create custom voice personas from natural language prompts (Voice Design) or clone voices from reference audio samples (Voice Replication) with Gemini 3.8 TTS.
* [Live Extended Thinking](./quickstarts/Get_started_Live_Thinking.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Live_Thinking.ipynb): Use extended thinking in real-time Live API sessions with conversational filler cues and non-blocking background tools.
* [Gemini Transcribe](./quickstarts/Get_started_transcribe.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_transcribe.ipynb): Transcribe audio files and live streams with word-level timestamps, speaker diarization, custom vocabulary, and smart transcription.
* [Webhooks](./quickstarts/Webhooks.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Webhooks.ipynb) & [Inference Tiers](./quickstarts/Inference_tiers.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Inference_tiers.ipynb): Receive real-time notifications for async jobs and balance speed, cost, and reliability with Priority and Flex inference tiers.
## 1. Quick Starts
The [quickstarts section](https://github.com/google-gemini/cookbook/tree/main/quickstarts/) contains step-by-step tutorials to get you started with Gemini and learn about its specific features.
**To begin, you'll need:**
1. A Google account.
2. An API key (create one in [Google AI Studio](https://aistudio.google.com/app/apikey)).
We recommend starting with the following:
* [Authentication](./quickstarts/Authentication.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Authentication.ipynb): Set up your API key for access.
* [**Get Started**](./quickstarts/Get_started.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started.ipynb): Get started with Gemini models and the Gemini API, covering basic prompting and multimodal input.
Then, explore the other quickstarts tutorials to learn about individual features:
* [Get started with Text-to-Speech (TTS)](./quickstarts/Get_started_TTS.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_TTS.ipynb) and [Voices (Voice Design & Replication)](./quickstarts/Get_Started_Voices.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Voices.ipynb): Generate expressive single- and multi-speaker speech, design custom voices from text prompts, or replicate voices from audio samples
* [Get started with Live API](./quickstarts/Get_started_LiveAPI.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_LiveAPI.ipynb): Get started with the live API with this comprehensive overview of its capabilities
* [Get started with Live Extended Thinking](./quickstarts/Get_started_Live_Thinking.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Live_Thinking.ipynb): Use extended thinking in real-time Live API sessions with conversational filler cues and non-blocking background tools
* [Get started with Live Translation](./quickstarts/Get_started_LiveTranslate.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_LiveTranslate.ipynb): Translate audio streams in real-time using the Live Translation API
* [Get started with Gemini Transcribe](./quickstarts/Get_started_transcribe.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_transcribe.ipynb): Transcribe audio files and real-time streams with word-level timestamps, speaker diarization, and smart transcription
* [Get started with Omni Flash](./quickstarts/Get_started_Omni.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Omni.ipynb): Get started with conversational video generation and editing using the Interactions API
* [Get started with Veo](./quickstarts/Get_started_Veo.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Veo.ipynb): Get started with our video generation capabilities
* [Get Started with Nano-Banana](./quickstarts/Get_Started_Nano_Banana.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_Started_Nano_Banana.ipynb): Get started with our image generation capabilities
* [Get started with Lyria](./quickstarts/Get_started_Lyria.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_Lyria.ipynb): Generate full songs and interactive music with Lyria 3.5 and [Lyria RealTime](./quickstarts/Get_started_LyriaRealTime.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Get_started_LyriaRealTime.ipynb)
* [Grounding](./quickstarts/Grounding.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Grounding.ipynb): Use Google Search for grounded responses
* [Code execution](./quickstarts/Code_Execution.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Code_Execution.ipynb): Generate and run Python code to solve complex tasks and even output graphs
* And [many more](https://github.com/google-gemini/cookbook/tree/main/quickstarts/)
## 2. Examples (Practical Use Cases)
These examples demonstrate how to combine multiple Gemini API features or 3rd-party tools to build more complex applications.
* [Browser as a tool](./examples/Browser_as_a_tool.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/Browser_as_a_tool.ipynb): Use a web browser for live and internal (intranet) web interactions
* [Illustrate a book](./examples/Book_illustration.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/Book_illustration.ipynb): Use Gemini to create illustration for an open-source book
* [Animated Story Generation](./examples/Animated_Story_Video_Generation_gemini.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/Animated_Story_Video_Generation_gemini.ipynb): Create animated videos by combining Gemini's story generation, Imagen, and audio synthesis
* [Plotting and mapping Live](./examples/LiveAPI_plotting_and_mapping.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/LiveAPI_plotting_and_mapping.ipynb): Mix *Live API* and *Code execution* to solve complex tasks live
* [3D Spatial understanding](./examples/Spatial_understanding_3d.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/Spatial_understanding_3d.ipynb): Use Gemini *3D spatial* abilities to understand 3D scenes
* [Cost Estimation and Health Monitoring](./examples/Cost_Estimation_And_Health_Monitoring.ipynb) [Colab](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/Cost_Estimation_And_Health_Monitoring.ipynb): Build an observability layer for Gemini API applications to estimate USD costs and monitor health
* [Gradio and live API](./examples/gradio_audio.py): Use Gradio to deploy your own instance of the *Live API*
* And [many more](https://github.com/google-gemini/cookbook/tree/main/examples/)
## 3. Demos (End-to-End Applications)
These fully functional, end-to-end applications showcase the power of Gemini in real-world scenarios.
* [Gemini CLI](https://github.com/google-gemini/gemini-cli): Open-source AI agent that brings the power of Gemini directly into your terminal
* [Gemini API quickstart](https://github.com/google-gemini/gemini-api-quickstart): Python Flask App running with the Google AI Gemini API, designed to get you started building with Gemini's multi-modal capabilities
* [Multimodal Live API Web Console](https://github.com/google-gemini/multimodal-live-api-web-console): React-based starter app for using the Multimodal Live API over a websocket
* [Fullstack Langgraph Quickstart](https://github.com/google-gemini/gemini-fullstack-langgraph-quickstart): A fullstack application using a React frontend and a LangGraph-powered backend agent
* [Google AI Studio Starter Applets](https://github.com/google-gemini/starter-applets): A collection of small apps that demonstrate how Gemini can be used to create interactive experiences
## Official SDKs
The Gemini API is a REST API. You can call it directly using tools like `curl` (see [REST examples](https://github.com/google-gemini/cookbook/tree/main/quickstarts/rest/) or the great [Postman workspace](https://www.postman.com/ai-on-postman/google-gemini-apis/overview)), or use one of our official SDKs:
* [Python](https://github.com/googleapis/python-genai)
* [Go](https://github.com/googleapis/go-genai)
* [Node.js](https://github.com/googleapis/js-genai)
* [Java](https://github.com/googleapis/java-genai)
* [C#](https://github.com/googleapis/dotnet-genai/)
## Get Help
Ask a question on the [Google AI Developer Forum](https://discuss.ai.google.dev/).
## The Gemini API on Google Cloud Vertex AI
For enterprise developers, the Gemini API is also available on Google Cloud Vertex AI. See [this repo](https://github.com/GoogleCloudPlatform/generative-ai) for examples.
## Contributing
Contributions are welcome! See [CONTRIBUTING.md](CONTRIBUTING.md) for details.
Thank you for developing with the Gemini API! We're excited to see what you create.
---
Attribution added by YourAIKit. It is not part of the upstream file.
- Source: https://github.com/google-gemini/cookbook
- Credit: Google
- Upstream copy: google-gemini/cookbook at commit 550674681574d7aa24304b8fa9b31234e241ed7e, README.md
- Copyright: held by the upstream authors credited above
- License: Apache-2.0. Full text: https://youraikit.com/licenses/google-gemini-cookbook-root/LICENSE
- Changes: YourAIKit removed 55 embedded images (badges, logos, or pictures); a linked image keeps its link as text.
- The full upstream license text (LICENSE) follows.
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