Overview

Theia AI is an open framework for building customizable, AI-native tools and IDEs, designed to give developers complete control over AI integration. As part of the broader Theia Platform, it supports both cloud and desktop environments and is the foundation for the AI-powered Theia IDE—an open-source development environment offering transparency, flexibility, and full control over AI interactions.

Theia AI enables developers to create domain-specific AI agents capable of complex, multi-turn conversations with native access to tool components. These agents can be embedded with advanced features like custom user interfaces, structured change sets, and interactive workflows. Developers can also define the agent’s context by integrating external APIs, databases, or scoped data, such as files or symbols dragged into a chat window.

The framework is model-agnostic, supporting cloud-hosted, local, and self-hosted language models, as well as external integrations like Anthropic’s Model Context Protocol (MCP). With advanced prompt management, custom UX components, and native context retrieval, Theia AI empowers teams to design sophisticated, workflow-aware AI experiences.

Ideal for teams building developer tools, technical editors, or complex automation systems, Theia AI provides the structure and adaptability needed to go beyond basic chat agents and embed intelligent behavior into modern, domain-tailored environments.

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Initial release

April 6, 2025

Initial release of Theia IDE.

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Pros and Cons

Pros

Open-source

Cross-platform

Language Server Protocol

VS Code extension compatibility

Modular architecture

Customizable

Extensible

Vendor-neutral

Flexible workbench layout

Theming support

Dynamic toolbar

Detachable views

Tab management

Web-based interface

Monaco editor

Unique architecture

Not a VS Code fork

Cloud support

Desktop support

Container support

Microservices support

DevOps support

Agile development support

Continuous integration support

Data science support

Cybersecurity support

Web development support

Mobile app development support

Game development support

Git support

GitHub support

Debugging tools

Version control

Collaboration tools

Code editing support

Code completion

Code refactoring

Code analysis

Testing support

Deployment support

Flexible deployment options

Community support

Documentation

Tutorials

User discussions

Issue tracking

Bug reporting

Feature requests

Open-vsx registry

Extension ecosystem

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Cons

No native ARM support

Limited online session

Closed ecosystem

No API access

Experimental Docker

Limited Linux support

No mobile support

Slow x86 on ARM

Updates via Snap

Unstable x86 build

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Q&A

What is Theia IDE?

Theia IDE is a modern, open-source development environment that runs on desktop and in the cloud.

How does Theia IDE differ from VS Code?

Theia IDE differs from VS Code in that it is not a fork of VS Code, but rather a separately developed IDE that is compatible with VS Code extensions and supports the Language Server Protocol (LSP).

Is Theia IDE open-source?

Yes, Theia IDE is open-source.

Can I use Theia IDE for cloud development?

Yes, Theia IDE can be used for cloud development.

What programming languages are supported by Theia IDE?

Theia IDE supports a wide range of programming languages, including Python, Java, JavaScript, C++, and more.

How do I install Theia IDE on my computer?

Theia IDE can be installed on Windows, Linux, and MacOS by downloading the respective installation files from the official website.

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What are the system requirements for Theia IDE?

The system requirements for Theia IDE are not explicitly stated, but it can run on Windows, Linux, and MacOS.

Can I use Theia IDE for mobile app development?

Yes, Theia IDE can be used for mobile app development.

Is Theia IDE compatible with VS Code extensions?

Yes, Theia IDE is compatible with VS Code extensions.

How do I get started with Theia AI?

To get started with Theia AI, you can explore the Theia AI documentation and try out the AI-powered features in the Theia IDE.

What are the benefits of using Theia IDE?

The benefits of using Theia IDE include its flexibility, customizability, and compatibility with a wide range of programming languages and extensions.

Can I customize the layout of Theia IDE?

Yes, the layout of Theia IDE can be customized using the flexible workbench layout and user experience features.

How do I update Theia IDE to the latest version?

Theia IDE can be updated to the latest version by downloading the latest installation files from the official website or by using the built-in update mechanism.

Can I use Theia IDE for game development?

Yes, Theia IDE can be used for game development.

What is the difference between Theia IDE and Theia Platform?

Theia IDE is built on top of the Theia Platform, which is a framework for building custom, tailored cloud and desktop IDEs.

How do I create a custom extension for Theia IDE?

Custom extensions for Theia IDE can be created using the Theia Platform and the available APIs and documentation.

Can I use Theia IDE for collaborative development?

Yes, Theia IDE can be used for collaborative development using features such as GitLens and GitHub Pull Requests and Issues.

What are the limitations of the online test version of Theia IDE?

The online test version of Theia IDE is limited to 30 minutes per session and is hosted via Theia.cloud.

How do I report a bug or request a feature for Theia IDE?

Bugs and feature requests for Theia IDE can be reported on the GitHub discussions page.

Can I use Theia IDE for data science and machine learning projects?

Yes, Theia IDE can be used for data science and machine learning projects, with support for languages such as Python and R.

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