Cursor

Why this is the AI tool that actually mattered

The wave of "AI for X" products has been mostly noise. Cursor is the exception. It is not a chat layer over your editor. It is a code editor where the AI is genuinely embedded in the editing model.

The difference matters concretely. With ChatGPT or Claude in a browser, you copy code in, paste suggestions back, manually re-thread context. With Cursor, the model already has your repo loaded and your edits flow through the same buffer you would normally type in. The friction tax of using AI drops to roughly zero, and the result is that you actually use it.

For a one-person business that ships software, that is worth real money. A solo developer with Cursor genuinely does the work of a small team for routine tasks. Not for the hard architectural decisions, but for everything in the long tail of glue code, test scaffolding, refactors, and "make this CRUD form work".

What you actually use

• Cmd+K (inline edit). Highlight a function, press Cmd+K, describe the change. The AI rewrites it in place. Cleanest interaction in the product.
• Cmd+L (chat). Open a side panel chat that has your whole codebase as context. Ask questions like "where is the authentication middleware?" and get accurate answers with file paths.
• Composer. Describe a multi-file change ("add a new API route for X, update the type definitions, add a test"). Cursor stages all the edits across files for you to review and accept or reject.
• Tab autocomplete. Reads ahead of where your cursor is and suggests the next few lines, not just the next token. Has visibly higher hit rates than GitHub Copilot.

What to watch

The Pro tier is the real floor. The free Hobby tier rate-limits aggressively after a few hours of normal use. If you actually use Cursor as your daily editor, you will hit the wall in your first afternoon.

The model selection matters more than people realise. Cursor lets you pick GPT-4, Claude, or its own routing. Quality varies, and on very high load Cursor sometimes downshifts to a cheaper model with noticeably worse output. Worth keeping the model selector visible.

The one persistent risk: AI-suggested edits sometimes touch files you did not intend to change. Always review the diff before accepting. The Composer flow surfaces this clearly, but inline edits (Cmd+K) can sneak imports and small reformats in.

Verdict

If you write code as part of your business, Cursor at $20/mo pays for itself the first afternoon. It is the rare AI tool that has changed how solo software development feels, not just sped up specific tasks.