Jules is an autonomous coding agent by Google that works asynchronously inside GitHub repositories. Developers assign tasks via a prompt; Jules clones the repo into a secure Google Cloud VM, writes a plan, generates code diffs, and opens a pull request for review. It is powered by Gemini 2.5 Pro (free tier) and Gemini 3 Pro (Pro/Ultra). Jules left beta in mid-2025 and is now generally available worldwide. Key features: - Asynchronous task execution inside a sandboxed Google Cloud VM - Native GitHub integration: reads repo context, opens PRs with diffs - Supports bug fixes, test writing, version bumps, refactors, and new features - Audio changelog summaries of recent commits - Gemini 2.5 Pro on free tier; Gemini 3 Pro on paid tiers - Up to 300 tasks/day and 60 concurrent tasks on Ultra plan
Free: 15 tasks/day. Jules Pro (Google AI Pro, ~$19.99/mo): 100 tasks/day. Jules Ultra (Google AI Ultra, ~$124.99/mo): 300 tasks/day.