Jules

Jules is Google's asynchronous AI coding agent, announced at Google I/O 2025 and built on Gemini 2.5 Pro. It operates on GitHub repositories autonomously — the developer assigns a task, Jules works on it in the background, and submits a pull request when complete.

What Jules Does Well

Asynchronous operation is Jules's defining characteristic. Unlike in-editor AI assistants (Copilot, Cursor) that require the developer to be present, Jules works in the background on a task while the developer focuses on other work. Assign Jules a bug fix or feature, and come back to a completed pull request.

Full repository context gives Jules a complete understanding of the codebase rather than just the currently open file. It can trace a bug through multiple files, understand existing patterns and conventions, and write new code that fits naturally into the established architecture.

GitHub-native workflow makes the integration seamless for teams already on GitHub. Jules creates branches, commits changes with descriptive messages, and raises pull requests that go through the team's normal review process — the AI's work is treated like any developer's contribution.

Multi-step planning handles tasks that require more than a single edit. Jules creates a plan, executes it step by step, and can self-correct when test runs fail or when intermediate steps reveal new requirements.

Free during beta as Jules builds toward general availability. Google has not announced production pricing.

Who Jules Is For

Jules targets developers who want to offload well-defined, lower-complexity tasks — bug fixes, documentation updates, test generation, minor refactors — to an AI agent that works autonomously. It integrates with the Google IDX development environment and GitHub.