Announcing Gemini-CLI v2.0: Now with a key-free mode (no API key needed!), multi-key rotation, and proxy support.

Introducing Gemini-CLI v2.0: Enhanced Functionality with Key-Free Mode, Multi-Key Rotation, and Proxy Support

In the rapidly evolving landscape of AI-powered tools, command-line interfaces (CLIs) continue to play a pivotal role for developers, researchers, and enthusiasts seeking efficient and flexible access to large language models (LLMs). We are excited to announce the release of Gemini-CLI version 2.0 — a significant upgrade that elevates this tool into a more powerful, user-friendly, and versatile utility for interacting with Google’s Gemini API.

A New Era: Key-Free Access with Gemini-CLI

One of the most groundbreaking features in Gemini-CLI v2.0 is the introduction of a key-free mode. Traditionally, accessing the Gemini API required obtaining and managing API keys, which could pose barriers for casual users, hobbyists, or those seeking quick experimentation. With the new --free or -f option, users can leverage an unofficial Google API endpoint, enabling free access without the need for an API key. This simplifies onboarding and encourages broader exploration of the platform, all while maintaining a seamless experience—simply download, run, and start chatting.

Advanced Key Management for Heavy Users

For users with substantial workloads or those needing reliable, high-volume access, Gemini-CLI now offers comprehensive multi-key support. This includes features such as:

• Automatic Key Rotation: The client intelligently cycles through your stored API keys with each request, balancing usage and avoiding rate limits.
• Command-Line Key Management: Manage your API keys directly from the terminal using commands like --list-keys, --add-key, --remove-key, and --check-keys.
• In-Session Key Administration: Inside interactive sessions, the /keys command provides quick access to key management.

Additionally, if a specific key encounters a 403 Unauthorized error, Gemini-CLI informs you precisely which key failed, allowing for swift troubleshooting and maintenance.

Scripting and Automation Enhancements

Gemini-CLI v2.0 is crafted to serve as a robust tool for scripting and automation scenarios. Notable improvements include:

• Enhanced Piping Capabilities: Use a simple hyphen (-) to pipe input from standard input (stdin) directly into the client, streamlining workflow integration. For example:
  git diff | gemini-cli - "Summarize this patch."
• **Quiet Mode and Non-Interactive Execution