Gemini CLI

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Gemini CLI is Google’s official open-source AI agent for the terminal, powered by Gemini 2.5 Pro. It allows developers to chat, code, and perform complex tasks via natural language directly in the shell, with support for multimodal prompts and a massive 1 million-token context window.

Last Updated: 2025/6/27

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Detailed Introduction

Gemini CLI – AI Agent for Your Terminal

What is Gemini CLI?

Gemini CLI is Google's official open-source command-line tool that brings Gemini 2.5 Pro AI functionalities—including coding help, research, content generation, and task management—directly into the terminal. It’s powered by Gemini’s large language model with a massive 1 million-token context window, providing a powerful, multimodal experience for developers

Why Use Gemini CLI?

Native terminal experience: Interact with AI via simple NAT prompts in your shell—without an IDE .
Free and open-source: Preview is accessible to all with a Google account. The CLI is released under open-source license .
Deep model integration: Includes advanced features like Gemini Code Assist, Model Context Protocol, web search, and multimedia capabilities via Veo/Imagen
High usage limits: Offers 60 requests per minute and up to 1,000 requests per day, among the most generous free quotas available

Core Features

Chat-based code assistance: Write, debug, and refactor code directly from your terminal via natural language
Rich task support: Beyond coding—create content, perform research, analyze files, manage tasks, and troubleshoot issues
Multimodal and extendable: Access Gemini's language, code, image, audio, and video capabilities. Integrates plugins and supports custom prompts via MCP
Open-source codebase: Inspect and contribute to the code on GitHub—Apache 2.0 / MIT licensed

How to Get Started

Go to the Gemini CLI GitHub repo (https://github.com/google-gemini/gemini-cli/).
Download the latest release or build from source in Go or other supported languages
Set your GEMINI_API_KEY from Google AI Studio.
Run gemini with --help to explore chat, embed, prompt, code features, and more
Start typing prompts and interact straight from your shell.

Tips & Tricks

Use Gemini Code Assist seamlessly: Enjoy the same code help available in IDEs, right in your terminal
Explore multimodal features: Try generating images or summarizing videos directly via CLI.
Customize via system commands: Use commands like !m (toggle multiline), set models, or clear memory within chat sessions

FAQ

Q: Is Gemini CLI available now?
A: Yes. It's in public preview and open-source. You can access it with a personal Google account and a Gemini Code Assist license

Q: Do I need an API key?
A: Yes. Obtain your Gemini API key from Google AI Studio or Vertex AI and set it in the GEMINI_API_KEY environment variable

Q: Can I use it for free?
A: Free preview users get up to 60 requests per minute and 1,000 per day. Paid users can exceed this via Vertex AI or enterprise plans

Q: What makes it different from IDE-based tools?
A: Gemini CLI stands out by offering a pure terminal-native AI experience with no need for heavy IDE setups, covering code, text, research, and media—all via shell interaction
Q: Who is it for?
A: Ideal for terminal-loving developers, DevOps professionals, researchers, and AI enthusiasts who prefer AI tools tightly integrated into their command-line workflows

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