RubyMine 2025.1: Major AI Assistant Upgrade, Cloud-Based Code Completion for RBS, More Ruby 3.4 Support, Kamal Schema Updates, Enhanced RemDev, and More

RubyMine 2025.1 introduces a massively upgraded AI Assistant (code completion for RBS, offline mode, more models available, and other features), support for the latest Kamal version, debugging for multi-module projects, and significantly improved remote development.

Below is a brief overview of the most notable features. For a detailed description of this update, please visit our What’s New page.

You can get the new build from our website or via the free Toolbox App.

AI Assistant

The new RubyMine release comes with all JetBrains AI features accessible for free, with unlimited use for some, such as unlimited code completion and local model support, and limited credit-based access to others. You can choose what to use and how to use it with the new subscription system. Watch our video to learn more.

RBS coding assistance

RubyMine 2025.1 further expands the powers of the JetBrains AI Assistant plugin with code completion for RBS based on JetBrains’ new Mellum model. AI Assistant now also allows you to use natural language prompts directly in the editor to enhance your RBS coding.

Better AI suggestions

AI code suggestions are now provided with error inspections and syntax highlighting to make sure you find and use only what best suits your purposes.

New models and modes

Take full control of your AI experience in RubyMine by choosing from the latest and most advanced models: Claude 3.7 Sonnet and Gemini 2.0 Flash.

You can now also use the plugin offline. With Ollama and LM Studio local models, all AI-powered coding assistance is still available even when there’s no internet connection.

Improved AI chat

Be more productive with the upgraded AI chat, which can now locate the most relevant files and make suggestions across your entire project within one interaction. Moreover, it will find and suggest where to insert the newly generated code to save you the trouble of manual copy-pasting. All it takes is one click on the Apply button.

Smarter AI awareness

The revamped AI Assistant better understands your entire project thanks to the advanced RAG-based retrieval technique. While AI context now includes recently accessed files, you can tell AI Assistant which files or folders to ignore by configuring an .aiignore file.

Ruby

Ruby 3.4 support 

RubyMine 2025.1 displays warnings when you create constants or modify the global Ruby namespace and sends error messages when using keyword and block arguments inside index assignments.

asdf 0.16+ compatibility 

RubyMine 2025.1 supports the latest version of asdf to make sure the interpreters installed with this version manager are recognized properly. This fixes any issues you might have previously encountered in RubyMine when using the re-written 0.16 version of asdf.

Rails

Kamal 2.4.0 and 2.5.0 support 

RubyMine 2025.1 comes with the updated deploy.yml schema to help you deploy your Rails applications with the new 2.4.0 and 2.5.0 versions of Kamal.

Rake task and Rails generator handling

Control the automatic refreshing of Rails generators and Rake tasks using advanced settings. When the automatic loading is disabled, only manual reload actions are available. We have also improved the UX by placing loading errors in balloon notifications instead of the previously used window notifications. 

User experience 

User interface updates

The UI improvements in RubyMine 2025.1 include native Windows file dialogs, which are part of the default settings but can be changed to the previous option in Advanced Settings | User Interface. We also simplified the procedure of creating new files. After clicking the + icon in the Project tool window, you can now quickly find and select the required template from the popup using the search field. 

Automatic plugin updating 

RubyMine 2025.1 can update plugins in the background. With this setting, all available and compatible updates are downloaded and applied on the next RubyMine restart. 

VCS 

RubyMine 2025.1 no longer offers the modal commit interface as a bundled option, but you can still use it as a separate plugin. Another change is the enhanced diff view, which allows you to see commit details for quicker and easier analysis of the file history and modifications.

Remote development 

Containerfile support

Enjoy more freedom and flexibility when using various tools for remote solutions in the same environment. With RubyMine 2025.1 featuring built-in Containerfile recognition, Docker, Podman, and Buildah can all be configured in the same file. And this file is fully recognized by the tools of your choice, with full support for syntax highlighting, linting, and snippet suggestions.

Improved editing

With reduced typing, highlighting, and formatting latency, RubyMine 2025.1 ensures a better overall editing experience in remote development.

To learn about the latest features as they come out, please follow RubyMine on X. 

We invite you to share your thoughts in the comments below and to suggest and vote for new features in the issue tracker.

Happy developing!

The RubyMine team