Gemini CLI 2.0 (New Upgrades): This is now BETTER THAN Claude Code! Integrate w/ VS Code, Plan mode!

Key Concepts:

• Gemini CLI: A free alternative to Claude Code for code generation and analysis.
• Gemini 1.5 Pro: The model used by Gemini CLI, featuring a 1 million token context window.
• Plan Mode: Generates a step-by-step implementation plan in markdown without writing code.
• Implementation Mode: Executes the plan generated in Plan Mode, updating the plan file and seeking approval for changes.
• Custom Slash Commands: Personalized workflows defined in toml files, allowing for argument handling and shell execution.
• VS Code IDE Integration: Native integration with VS Code for in-editor diffing and workspace context access.
• GitHub Actions Integration: Using Gemini CLI in CI/CD workflows for issue analysis, pull request reviews, and task delegation.

Gemini CLI Overview and Initial Features

• Gemini CLI has received significant upgrades since its launch, making it a viable alternative to Claude Code.
• It offers 60 requests per minute and 1,000 requests per day for free, utilizing the Gemini 1.5 Pro model with a 1 million token context window.
• Early updates include improved support for Ink6 and React 19, Markdown table rendering, clipboard image paste for Mac OS, enhanced privacy settings, and fixes for infinite loop protection.
• Additional improvements cover HTTP MCP server support, new themes, editor integrations for Neoim and VS Codium, privacy setting adjustments via the /privacy command, and robust error handling for quota and API issues.

Plan and Implementation Modes

• Plan Mode: This mode allows users to input a feature request, and Gemini CLI analyzes the codebase to generate a detailed, step-by-step implementation plan in Markdown format. It does not write any functional code at this stage.
• Implementation Mode: Building on the plan created in Plan Mode, this mode executes the plan step by step, updating the plan file and pausing for user approval if any modifications are required.
• Both modes are powered by custom slash commands, which enable users to define templates and instructions in TOML files stored in a commands directory. This enhances workflow organization and repeatability, particularly for larger projects or automated tasks.

Custom Commands and Personalization

• Custom commands have been enhanced to offer greater flexibility, allowing users to personalize workflows with their own slash commands, including argument handling and shell execution.
• Support for Geminy ignore files provides more precise control over what is included in the context.
• Custom themes can be added to adjust the CLI's appearance.
• Mac OS users benefit from Homebrew installation instructions, and a new /copy command instantly copies the last output to the clipboard.
• Startup time has been reduced by running model availability checks in the background, and hashing-based loop detection prevents runaway tool calls.

Authentication and Usability Improvements

• Authentication has been improved, especially for headless environments like CI/CD servers, with better authentication flows, explicit proxy options for corporate setups, and enhanced safety for shell command execution.
• Numbers have been added to selection lists for easier navigation.
• Handling for session turns and nightly version visuals has been improved.
• Users can configure maximum session turns and use environment variables like no_browser for offline authentication flows.

VS Code IDE Integration

• Gemini CLI now features native VS Code IDE integration, accessible via the /ID command, which installs a companion extension directly from the CLI.
• The integration allows Gemini CLI to access the workspace context, including open files and selected text.
• A key feature is native in-editor diffing, which provides a full-screen diff view inside VS Code, enabling users to review and modify changes before accepting them.
• The IDE integration optimizes context by sending only code deltas after the initial prompt, improving efficiency.
• New MCP commands for server management, UI improvements for narrow terminals, an approval mode for interactive tool execution, and instant history search with Ctrl+R have been added.
• File path completion is faster with FCF integration, and users can configure the context window percentage that triggers autocompression.

GitHub Actions Integration

• Gemini CLI can be used directly in GitHub Actions, allowing it to be integrated into CI/CD workflows.
• It can automatically analyze, label, and prioritize GitHub issues, provide AI-powered reviews for pull requests, and delegate tasks by mentioning @GeminiCLI.
• Support for workload identity federation eliminates the need for long-lived API keys.
• The open-source nature of Gemini CLI allows users to tailor the workflow or build their own.
• Project-specific context can be provided through gemini.md files, and a comprehensive cheat sheet is available to help users get started.

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Demonstration and Usage

• To upgrade Gemini CLI, use the same npm install command used for installation.
• Starting Gemini CLI in an IDE terminal prompts the user to install the companion extension for enhanced graphical interface and workspace context.
• Gemini CLI can be started directly from the command palette using the "Gemini CLI run" registered command.
• The demonstration involves asking Gemini CLI to improve a README file, showcasing the in-editor diffing feature for approving or disapproving changes.
• Custom commands can be created by navigating to the Gemini folder within the project, then to the commands folder, and creating files in the specified format.
• GitHub Actions integration allows for agentic coding on GitHub Action VMs and task delegation.

Conclusion

• Gemini CLI has become a powerful and versatile tool, especially with the VS Code and GitHub Actions integrations. The system prompts have been improved, making it comparable to Claude Code while remaining free. The speaker encourages viewers to explore the tool and share their thoughts.