What Cursor actually does
Cursor is a code editor built on VS Code with AI deeply integrated into the editing experience. It is not an extension or a plugin — the AI is part of the IDE itself.
Key capabilities at the $20/month Pro tier:
- Tab completions — AI predicts your next edit and you accept with Tab. This is the feature most Cursor users cite as the primary reason they pay.
- Cmd+K inline editing — Highlight code, describe what you want changed, and the AI rewrites the selection in place.
- Codebase-aware chat — Ask questions about your codebase and get answers that reference actual files and functions, not generic advice.
- Multi-file editing — Cursor can apply changes across multiple files in a single operation, guided by your instructions in the chat panel.
- Multi-model support — Choose between Claude, GPT-4o, and other models as the backend for completions and chat.
The core value of Cursor is speed within the editor. It makes the act of writing and editing code faster. You stay in the IDE, and the AI meets you there.
What Claude Code actually does
Claude Code is a command-line tool that operates as an AI agent in your terminal. Instead of editing code with you, it edits code for you — planning, writing, testing, and committing changes autonomously.
Key capabilities (included with Claude Pro at $20/month):
- Multi-file refactors — Describe a change that touches 5, 10, or 50 files and Claude Code plans and executes the entire operation.
- Autonomous task execution — Give it a goal like "add authentication to this Express app" and it reads the codebase, creates files, installs dependencies, and writes tests.
- Plan-edit-verify workflow — Claude Code reads your code, proposes a plan, makes changes, then runs tests or linters to verify the result.
- Git integration — Commits, branches, and even PR descriptions are part of the agentic workflow.
- Shell access — Claude Code can run terminal commands, install packages, start servers, and debug runtime errors.
The core value of Claude Code is delegation. You describe what you want at a high level, and the agent handles the implementation across your entire codebase.
Where they overlap (and where they do not)
The overlap is real but narrower than it appears:
They overlap on single-file edits
Both tools can modify a single file based on a natural language instruction. Cursor does it with Cmd+K in the editor. Claude Code does it from the terminal. For quick changes to one file, either tool works.
They diverge on complex operations
Cursor is best when you are actively writing code and want AI to accelerate the process — faster completions, inline edits, quick questions about the codebase.
Claude Code is best when you have a multi-step task that you want to hand off entirely — refactoring a module, adding a feature across multiple files, or debugging a complex issue by running tests iteratively.
A useful mental model: Cursor is AI-assisted coding. Claude Code is AI-delegated coding. You use Cursor when you want to write code faster. You use Claude Code when you want the AI to write code for you.
They use the same underlying model
If you use Cursor with Claude as the backend model, both tools are powered by the same AI. The difference is the interface — IDE vs terminal — and the level of autonomy you give the AI.
The $40/month question — when both are worth it
You need both if...
- You regularly do multi-file refactors that touch 5+ files. Claude Code handles these far better than Cursor's multi-file edit.
- You switch between writing code and delegating code within the same session. Cursor for focused editing, Claude Code for big operations.
- You work on full-stack projects where frontend and backend changes need to happen together. Claude Code can coordinate cross-directory changes that Cursor handles less gracefully.
- You value the ability to have an AI agent run tests, check results, and iterate without your intervention.
You can drop one if...
- Drop Copilot if you have Cursor. Cursor's Tab completions and inline editing are strictly better than Copilot's completions. Savings: $10/month.
- Drop Cursor if you primarily use Claude Code for coding and just need a basic editor. VS Code with Claude Code from the terminal covers most workflows. Savings: $20/month.
- Drop Claude Code if you rarely do multi-file operations and Cursor's built-in chat handles your needs. Savings: You might be able to downgrade Claude Pro depending on other usage.
How to decide — the one-month experiment
Instead of guessing, run a deliberate experiment:
- Track your usage for one full billing cycle. Note which tool you reach for in each coding session.
- Count multi-file operations. If you do fewer than 5 per month, Claude Code may not be essential.
- Count inline edits. If you do fewer than 10 per day, Cursor may not be worth $20 over a free editor.
- At the end of the month, review. Did you use both tools consistently, or did one gather dust?
The data will make the decision obvious. Most builders who run this experiment find that they either clearly need both (active full-stack developers) or clearly need only one (specialists who work primarily in one mode).
Track the overlap before you decide
SubHorizon shows you exactly when Cursor and Claude renew, how much they cost together, and whether your usage justifies the combined $40/month. Set renewal reminders for both tools so the comparison question comes up naturally before each charge — instead of running on autopilot until you notice the total.