Gemini CLI

Google

Google's open-source terminal AI agent: free-tier access to Gemini models in your shell, with a 1M-token context, built-in search grounding, MCP support and extension ecosystem.

Product preview

Overview

Gemini CLI is Google's answer to Claude Code, and its opening move is generosity: a free tier of 60 requests per minute and 1,000 per day with the million-token context — enough that most individual developers never pay. It reads codebases, edits files, runs commands, grounds answers in Google Search when facts matter, and extends through MCP like its rivals.

It is also fully open source, which makes it the reference implementation for teams that want to fork their own agent or audit what runs on their machines. The honest gaps: agentic polish trails Claude Code on gnarly refactors, and model behavior tracks Gemini's strengths and quirks. As a free, open, search-grounded terminal agent, it reset expectations for what “free” means in this category — and made the BYOK agent pattern mainstream.

Pros / Cons

Pros

The most generous free tier in agentic coding
1M-token context reads entire repos
Open source — forkable and auditable
Search grounding when facts matter

Cons

Agentic polish trails Claude Code
Free-tier limits apply to authenticated usage
Behavior quirks track Gemini model releases

Who it's for

Free daily coding agent for individuals

Search-grounded research inside terminals

Forking a custom open agent

Learning agentic workflows at zero cost

Bottom line

The free open agent that made the category accessible — start here if you have never paid for one.

Key Features

Free tier: 60 req/min, 1,000/day

1M-token context window

Built-in Google Search grounding

MCP support & extensions

Fully open source (Apache-2.0)

Compare Gemini CLI with alternatives

Gemini CLI vs GitHub Copilot Gemini CLI vs Cursor Gemini CLI vs Windsurf 4 products · Code Generation

Frequently asked questions

What is Gemini CLI?

Gemini CLI is a Code Generation tool developed by Google. The company was founded in 2025 and is headquartered in Mountain View, USA. Google's open-source terminal AI agent: free-tier access to Gemini models in your shell, with a 1M-token context, built-in search grounding, MCP support and extension ecosystem.

Is Gemini CLI free?

Gemini CLI uses a freemium model: a free tier is available, and paid plans unlock more usage and advanced features.

Is Gemini CLI open source?

Yes — Gemini CLI is open source. The source code is publicly available at https://github.com/google-gemini/gemini-cli.

What are the best alternatives to Gemini CLI?

Notable Code Generation alternatives include GitHub Copilot, Cursor, Windsurf. Browse all 4 tools in our Code Generation category for a full overview.

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