SweepAI

Overview

Sweep is a Y Combinator-backed AI coding assistant built for JetBrains IDEs like IntelliJ, PyCharm, and WebStorm. It helps developers write and modify code faster inside their editor.It offers next-edit autocomplete powered by a custom 1.5B parameter model and an AI agent that understands full project context, applies multi-file changes, and can generate pull requests from GitHub issues.Sweep runs directly inside the IDE, reducing context switching and improving workflow efficiency. It uses its own models and is designed to avoid third-party code retention. It supports major programming languages including Python, JavaScript, TypeScript, Java, Go, Rust, C++, C#, and PHP.

Key Features

Next-Edit Autocomplete: A custom Tab model predicts your next coding intent in milliseconds. Unlike simple text completion, it uses JetBrains' Program Structure Interface (PSI) to understand your project's classes, methods, and variables for context-aware suggestions.
AI Agent for Pull Requests: Describe a bug or feature in a GitHub issue, and Sweep reads your repo, plans the implementation, writes code across multiple files, and opens a PR for review.
Inline Editing: Select code, describe what you want changed in natural language, and Sweep generates the edits directly in your editor.
AI Commit Messages: Automatically generates meaningful commit messages based on your staged changes, saving time on routine git workflows.
Code Refactoring: Handles automated function extraction, dead code removal, and detection of duplicate logic across multiple files.
Custom LLMs with Privacy Mode: Sweep runs its own models so your code is never stored or used for training by third parties. Privacy Mode can be enforced team-wide.
Multi-Language Support: Works with Python, JavaScript, TypeScript, Java, Go, Rust, C++, C#, PHP, Ruby, and HTML.
Test and Validation Support (IDE-Based): Sweep can assist with running tests and using JetBrains IDE tooling to validate changes before creating or updating pull requests. This helps catch issues early in the development process.

Pros

Purpose-built for JetBrains: Unlike competitors that bolt on IDE support as an afterthought, Sweep is designed from the ground up for IntelliJ, PyCharm, WebStorm, and other JetBrains IDEs.
Fast, Context-Aware Autocomplete: Sweep uses a custom next-edit model with JetBrains PSI to understand your codebase and provide low-latency, project-aware suggestions directly in the IDE.
Strong Privacy Controls: Runs its own LLMs with no code retention by third parties. Privacy Mode can be enforced across an entire team.
End-to-end Issue Resolution: Goes beyond code suggestions to handle the full workflow from GitHub issue to reviewed pull request, including writing tests and running formatters.
Iterative PR Feedback Loop: Comment on a generated PR with corrections, and Sweep reads your feedback, adjusts its approach, and pushes updated commits to the same branch.

Cons

JetBrains Only: Not available for VS Code, Neovim, or other editors. If you don't use a JetBrains IDE, Sweep isn't an option for you.
Requires Code Review: Generates useful first drafts, but complex logic often needs human review and refinement.
Credit-Based Pricing: While autocomplete is unlimited on paid plans, heavy use of the AI agent and chat features can burn through included API credits quickly, leading to extra charges.
GitHub-Centric Workflow: The agent feature works through GitHub issues and PRs. Developers using GitLab, Bitbucket, or Azure DevOps won't get the full agent experience.
** Optimized for Smaller Tasks**: Works well for bug fixes, tests, and refactoring, but larger architectural changes can be less consistent.

Use Cases

Clearing Your Bug Backlog: Assign GitHub issues to Sweep and generate PRs for bug fixes and small tasks.
Writing Unit Tests at Scale: Create issues for missing test coverage and let Sweep generate unit tests based on code context.
Faster Daily Coding in JetBrains: Use context-aware autocomplete and inline editing inside JetBrains IDEs for faster development.
Keeping Documentation Updated: Update README files, docstrings, and API docs based on code changes when prompted.
Library and Dependency Migrations: Automate repetitive multi-file changes when upgrading or replacing libraries.
Faster Developer Ramp-up: Helps developers understand codebases through context-aware suggestions and inline edits.entions.

Frequently Asked Questions

What IDEs does Sweep support?

Sweep is built specifically for JetBrains IDEs. It supports IntelliJ IDEA, PyCharm, WebStorm, Rider, PhpStorm, GoLand, CLion, RustRover, RubyMine, Android Studio, and JetBrains Gateway.

Is my code kept private?

Yes. Sweep is designed with privacy controls, and in Privacy Mode your code is not used for model training and is handled securely according to your deployment setup.

How does the AI Agent work with GitHub?

When you create or label a GitHub issue, Sweep reads your repository, creates a plan, writes code changes across multiple files, runs tests and formatters, and opens a pull request. You can comment on the PR with feedback and Sweep will push updated commits.

What programming languages does Sweep support?

Sweep supports Python, JavaScript, TypeScript, Java, Go, Rust, C++, C#, PHP, Ruby, and HTML. Its autocomplete uses JetBrains' PSI for deep understanding of project structure across these languages.

How is Sweep different from GitHub Copilot?

Copilot focuses on inline code suggestions in multiple editors. Sweep is purpose-built for JetBrains with next-edit autocomplete that uses PSI for project-level context, plus an AI agent that handles entire tasks end-to-end, from GitHub issue to pull request.

Can I self-host Sweep?

Sweep offers self-hosted and enterprise deployment options that can run on cloud infrastructure or private environments for organizations with security or compliance requirements.