Almost every AI coding assistant is measured by how much code it writes. The more interesting question is how much it can safely remove. Dead branches, unused helpers, three shims for a config that only exists in one place, an early-2024 fallback for a browser nobody supports anymore. This is the workflow the XDA piece on “asking AI to remove code” pointed at, and it turns out only a subset of the popular tools do it well. These are the seven best apps for AI code cleanup and refactoring on desktop in 2026, tested on a real 60k-line TypeScript monorepo where the objective was fewer lines, not more.
We evaluated each tool on three things: does it read the whole codebase before proposing a deletion, does it run the test suite (or check compile) before showing the diff, and does it explain what it removed and why. Every tool below runs on Windows, macOS, and Linux.
What to look for in an AI refactoring tool
Six criteria that separate a tool that safely deletes code from one that just makes it shorter.
- Whole-repo indexing. The tool has to see every reference before it can safely remove a function.
- Runs your tests. A refactor is not done until the tests pass. Tools that stop at “here is the diff” leave the safety check to you.
- Explains what it deleted. A commit that only says “cleanup” is useless six months later.
- Streams a plan first. For anything larger than one file, you want the plan before the changes.
- Reversibility. Every proposal lands as a diff or a git commit you can undo cleanly.
- License and privacy. For work code, you need on-prem, air-gap, or a “no training on your code” contract.
Quick comparison
| App | Best for | Platforms | Free plan | Standout feature |
|---|---|---|---|---|
| Aider | Terminal-native refactors with git commits | Win, Mac, Linux | Free (BYO API key) | Auto-commits per change, reads whole repo |
| Cursor | IDE refactors with agent mode | Win, Mac, Linux | Free tier | Cmd-K on selection with full-file context |
| Claude Code | CLI agent for large deletions | Win, Mac, Linux | Free trial | Reads test output, iterates until green |
| Windsurf | IDE-native Cascade agent | Win, Mac, Linux | Free tier | Multi-file edit preview |
| Continue | Open source IDE plugin | Win, Mac, Linux | Free (BYO API key) | Runs local models via Ollama |
| Cline | VS Code agent, open source | Win, Mac, Linux | Free (BYO API key) | Human-in-the-loop on every step |
| Sourcegraph Cody | Repo-scale search + edit | Win, Mac, Linux | Free tier | Ranks by import graph |
1. Aider, best for terminal-native refactors with git commits
Aider is a terminal chat tool that lives inside a git repo. Point it at the files you want to touch, describe the deletion you want, and Aider writes the change, runs the test command you configure, and commits with a descriptive message. If tests fail, it iterates. It supports Claude, GPT, Gemini, and any local model via LiteLLM.
Where it falls short: the UX is a terminal chat. If you want inline suggestions in an editor, this is not the tool.
Pricing:
- Free: entire tool, MIT licensed.
- Cost: you pay for the underlying model API (Claude Sonnet, GPT-5 mini, etc.).
Platforms: Windows, macOS, Linux (pip install).
Download: aider.chat or pip install aider-chat.
Bottom line: the pick for anyone who wants “delete this whole feature and its call sites, commit each step” as a single command.
2. Cursor, best for IDE refactors with agent mode
Cursor is a VS Code fork with a native Cmd-K refactor prompt and an Agent mode that can make multi-file edits with test-run loops. For cleanup work, select a helper, press Cmd-K, and ask “remove this function and every call site”. Cursor generates a diff spanning the codebase, shows it in a review pane, and applies on accept.
Where it falls short: cost. Heavy Agent mode use burns through the $20/month Pro tier fast on a large repo.
Pricing:
- Free: 2000 completions plus limited slow requests.
- Pro: $20/mo, higher request quota.
- Business: $40/user/mo.
Platforms: Windows, macOS, Linux.
Download: cursor.com.
Bottom line: pick this if you want the whole workflow inside an editor and are willing to pay per month.
3. Claude Code, best for CLI agent on large deletions
Claude Code is Anthropic’s terminal-first agent CLI. Point it at a repo, describe the cleanup (“remove every remaining reference to the deprecated LegacyAuth class and its tests”), and it plans, edits, runs tests, and iterates. On a 60k-line codebase it consistently completes broad deletions in one session.
Where it falls short: it lives in the terminal (there is an IDE integration but the CLI is where the leverage is). Costs run into API pricing on Sonnet-class models.
Pricing:
- Free tier: limited daily quota via Claude web login.
- Pro: $20/mo Claude Pro or Team.
- Max: $100/mo for heavy use.
Platforms: Windows, macOS, Linux (Node.js CLI).
Download: claude.com/product/claude-code or npm install -g @anthropic-ai/claude-code.
Bottom line: the pick if you want a CLI agent that reads your test output and stops only when green.
4. Windsurf, best for IDE-native Cascade agent
Windsurf (formerly Codeium’s IDE) has a Cascade agent that specialises in multi-file changes with a preview pane. For cleanup work, describe the cull, watch Cascade sequence the edits, and accept the plan file by file.
Where it falls short: Cascade sometimes over-eagerly renames neighbouring code the prompt did not ask about.
Pricing:
- Free: limited Cascade credits.
- Pro: $15/mo, extended credits.
Platforms: Windows, macOS, Linux.
Download: windsurf.com.
Bottom line: pick this if you want IDE-native agent workflows and prefer a cheaper Pro tier than Cursor.
5. Continue, best open source IDE plugin
Continue is an open source VS Code and JetBrains plugin that lets you plug in any model, including local ones running under Ollama. For refactoring, the /edit command applies a described change to the selected block and shows a diff.
Where it falls short: no true multi-file agent mode yet; you drive file by file.
Pricing: free, open source (Apache 2.0).
Platforms: Windows, macOS, Linux (as a VS Code or JetBrains extension).
Download: continue.dev.
Bottom line: pick this if you want fully local AI refactoring on a workstation with a decent GPU.
6. Cline, best for human-in-the-loop deletion
Cline is a VS Code agent extension that requires an explicit approval on every file edit and every shell command it wants to run. For cleanup, that friction is a feature; you can watch what it plans to delete before it does.
Where it falls short: the constant approvals slow bulk edits. Also open source (BYO API key).
Pricing: free, open source (Apache 2.0). Cost is the model API.
Platforms: Windows, macOS, Linux (VS Code extension).
Download: cline.bot or the VS Code marketplace.
Bottom line: pick this if you want to see every intended change before it lands.
7. Sourcegraph Cody, best for repo-scale search plus edit
Sourcegraph Cody ships as a VS Code and JetBrains plugin backed by Sourcegraph’s repo search graph. Its strength for cleanup is ranking: when it proposes a deletion it can enumerate every caller across a multi-repo codebase and show you the graph.
Where it falls short: the full “search everything then edit” workflow needs a paid Sourcegraph instance; the free tier limits repo scope.
Pricing:
- Free: limited context.
- Pro: $9/user/mo.
- Enterprise: custom.
Platforms: Windows, macOS, Linux.
Download: sourcegraph.com/cody.
Bottom line: pick this if your refactor spans multiple repos and you need the callers listed accurately.
How to pick the right one
- If you want a CLI you drop into any repo: Aider or Claude Code.
- If you want the whole thing inside VS Code: Cursor or Windsurf.
- If cost matters most: Continue with a local model.
- If you want to approve every change: Cline.
- If you work across multiple repos: Sourcegraph Cody.
- If your organisation already pays for GitHub Copilot: use Copilot Chat’s
/fixand/simplifyprompts before adding another tool. Copilot’s refactor commands cover the common cases.
FAQ
Which AI coding tool is best at deleting code? Aider and Claude Code are the two that consistently identify dead paths across a repo, propose a plan, run the tests, and only stop when everything is green.
Can AI safely refactor a large codebase? Yes, if you use a tool that runs the test suite and commits step by step. The failure mode is agents that write a large diff and stop. Aider’s per-change commits and Claude Code’s iterate-until-green loop are both designed to avoid this.
Is Continue as good as Cursor? For per-file refactors, yes. For multi-file agent work, Cursor is still ahead. Continue is the pick when local-only inference matters.
Which tool has the best free tier for refactoring? Continue is completely free (BYO API key). Aider is free but you pay the model provider. Cursor and Windsurf both have generous free tiers that cover small cleanups.
How do I stop an AI tool from adding new features when I ask for cleanup? Prompt explicitly. “Do not add new abstractions. Do not extract helpers. Only remove dead code and inline consumers where necessary.” Tools that support system prompts (Aider, Claude Code, Continue) let you set this once.
