Google launched Jules in August 2025 as its entry into the autonomous software engineering agent market. The product followed the pattern established by Devin — assign an issue, receive a pull request — but with Google’s infrastructure advantages: Gemini 2.5 Pro as the underlying model and isolated Google Cloud VMs for secure code execution.
Jules operated through GitHub integration: developers assigned issues to Jules through the standard GitHub interface, and the agent created a plan, executed code changes in an isolated environment, ran tests, and opened a pull request for review. The entire process was asynchronous — Jules worked in the background while developers continued their own work.
Jules represented Google’s acknowledgment that autonomous issue-to-PR agents had become a standard product category. Coming months after rivals from GitHub (Copilot Coding Agent), AWS (Kiro), and Cognition (Devin) had established their positions, Jules brought Google’s model capabilities and cloud infrastructure to the category. The free tier via Google account made it accessible to individual developers evaluating autonomous agents for the first time.