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Overview

Jules is an AI-powered coding agent designed to take on real software tasks end-to-end—so developers can spend more time building and less time on busywork. You give Jules a GitHub repo (or assign it an issue), write a detailed prompt, and it will fetch your code, create a plan, make changes, run or generate tests, and produce a pull request for review.

Jules works inside a cloud virtual machine where it clones your repository and verifies changes, helping reduce “it works on my machine” surprises. It supports GitHub integration for branch-based workflows and PR creation, plus the ability to run existing test suites or add new ones when needed. You can use Jules from the CLI or integrate it into custom workflows via an API, making it flexible for individual devs and teams.

Jules offers multiple plans to match different workloads—from everyday fixes to high-throughput, parallel agent development with higher model access and more concurrent tasks.

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May 20, 2025

Initial release of Jules.

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Pros and Cons

Pros

Autonomous coding tasks

GitHub integration

Task assignment via platform

Repository cloning to Cloud VM

Advanced planning approach

Detailed change visibility

Code amendments review

Pull Request generation

Facilitates changes merging

Facilitates GitHub publishing

Adapts to various workflows

Multiple plan options

Suited for different throughput needs

Different model access degrees

Management of concurrent tasks

Automatic bug fixing

Automated version bump

Tests fixing

Feature building

Saves coding time

Task assignment using labels

Changes diff providing

Cloud VM code development

Detailed task prompts

15 tasks per day

100 tasks per day

300 tasks per day

Access to Gemini 3 Pro

60 concurrent tasks capacity

Branch publishing on GitHub

Quick fixes

Multi-agent developments

Software development scaling

Real coding task handling

View 30 more pros

Cons

Limited to GitHub integration

Only Cloud VM support

Limited concurrent tasks

Advanced features expense

No local repository support

Requires PR approval workflow

No multiple repositories

Restricted model access

Workflow adaptability limited

Tasks per day restriction

View 5 more cons

Q&A

What is Jules?

Jules is an autonomous coding tool designed to manage and execute numerous coding tasks. It aids developers to concentrate on their main work by taking care of other coding tasks they rather not do.

How does Jules handle coding tasks?

Jules handles coding tasks by integrating with your GitHub account. Once a task is delegated to it, Jules clones your repository to a Cloud Virtual Machine (VM) and develops a detailed planning approach to achieve the task using the advanced Gemini Pro model. After executing the necessary changes, it creates a Pull Request (PR) for approval before merging the changes to the designated branch on GitHub.

What kind of tasks can Jules perform?

Jules is capable of performing various coding tasks, including bug fixing, version bump, tests fixing, and feature building.

How does Jules integrate with GitHub?

Jules integrates with GitHub by allowing users to assign tasks directly via the GitHub platform. After a task is assigned, it fetches the necessary repository, clones it to a Cloud VM, and begins the task.

Can I assign tasks directly from GitHub to Jules?

Yes, you can assign tasks directly from GitHub to Jules by using the 'jules' label in an issue.

How does Jules use Cloud Virtual Machine (VM) for task management?

Jules uses a Cloud Virtual Machine (VM) to clone your GitHub repository. It uses this copy to execute the task without disrupting the main codebase until the changes have been approved.

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What is the Gemini Pro model?

The Gemini Pro model is an advanced algorithm which Jules uses to execute tasks. It allows Jules to develop a meticulous planning approach for any delegated task.

Can I see the changes Jules makes to my code?

Yes, you can see the changes Jules makes to your code. It provides a diff of the changes, allowing users to quickly browse and approve code edits.

How does Jules create a Pull Request (PR)?

Jules creates a Pull Request (PR) for the changes it has made. This PR is submitted to your GitHub account for review and approval.

What happens after a Pull Request created by Jules is approved?

Once a Pull Request created by Jules is approved, it merges these changes to the designated branch and facilitates publishing on GitHub.

How does Jules adapt to various workflows?

Jules can adapt to various workflows. From quick fixes to extensive, multi-agent development, it adjusts depending on how you build and the kind of tasks you assign to it.

Are there different plans available for using Jules?

Yes, there are different plans available for using Jules - Jules (the base plan), 'Jules in Pro', and 'Jules in Ultra' to accommodate various needs.

How many tasks can Jules manage concurrently?

The number of concurrent tasks Jules can manage depends on the plan chosen by the user. The base plan allows for 3 concurrent tasks, 'Jules in Pro' allows for 15, and 'Jules in Ultra' allows for 60 concurrent tasks.

What capabilities does the 'Jules in Pro' plan offer?

The 'Jules in Pro' plan offers 100 tasks per day, enough to run Jules throughout your coding day. It also enables 15 concurrent tasks and provides higher access to the latest models, starting with Gemini 3 Pro.

What do I receive with the 'Jules in Ultra' plan?

With the 'Jules in Ultra' plan, you can handle 300 tasks per day suitable for the most demanding development cycles. The plan offers 60 concurrent tasks and gives priority access to the latest models, starting with Gemini 3 Pro.

How does Jules affect my productivity as a developer?

Jules enhances your productivity as a developer by offloading coding tasks you rather not do, which frees up time for you to focus on primary development tasks.

Does Jules handle bug fixing?

Yes, Jules can handle bug fixing tasks.

Can I use Jules for feature building tasks?

Yes, Jules can be utilized for feature building tasks.

How can I start using Jules?

You can start using Jules by selecting a plan that fits your workflow, then integrating it with your GitHub account.

How do I select my GitHub repository and branch for Jules to work with?

You can select your GitHub repository and branch for Jules to work with when assigning a task to it. This is done via your GitHub platform where you write a detailed prompt for Jules and use the 'jules' label in an issue to assign the task.

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