Jules
Free tierAn Autonomous Coding Agent
Free tier available·All audiences·Powered by Google (Gemini)
Key strengths
Autonomous coding agent that handles bug fixing, version bumps, tests, and feature buildingClones repo to a Cloud VM and develops a structured plan before making changesProvides a diff for review before applying changesCreates GitHub PRs automaticallySupports massively parallel workflows with up to 60 concurrent tasksPowered by latest Gemini models
Free tier + paid plans
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Integration & Authentication Jules integrates exclusively with GitHub. Connecting your repository grants Jules access to clone it into a sandboxed Cloud VM environment for task execution.
Task Execution Model
- Jules clones the target repo to a Cloud VM, constructs a structured plan, and executes code changes autonomously.
- A diff is generated and surfaced for developer review before any changes are applied.
- On approval, Jules can automatically create a GitHub PR.
Model Backend
- Powered by Google Gemini models.
- Free tier: Gemini 2.5 Pro.
- Pro & Ultra tiers: Gemini 3 Pro (Ultra receives priority model access).
Rate Limits & Concurrency
| Tier | Tasks/Day | Concurrent Tasks | Model |
|---|---|---|---|
| Free | 15 | 3 | Gemini 2.5 Pro |
| Pro | 100 | 15 | Gemini 3 Pro |
| Ultra | 300 | 60 | Gemini 3 Pro (priority) |
Pricing Model: Freemium — a free tier is available with no stated time limit.
Alternatives
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