I Switched from Copilot to Cursor for 6 Weeks — Here's What Actually Happened

I broke up with GitHub Copilot last month. Well, "broke up" is dramatic — we're still seeing each other at work. But for my personal projects? I'm with someone new now, and honestly, the whole experience has been way messier than I expected.

I've been using Copilot since the early beta days. Back when it would randomly autocomplete your actual API keys into source files. If you weren't there for that particular dumpster fire, you missed some truly spicy Hacker News threads. They patched it in like 48 hours, but those were a tense couple of days.

Six weeks ago, I finally caved to the relentless r/programming hype and gave Cursor a real shot. Not the "install it for an afternoon and immediately write a hot take on Medium" kind of shot. I forced myself to use it on an actual production Next.js + tRPC project — the kind where breaking things has consequences beyond my own frustration at 11 PM.

Here's what nobody tells you about making the switch.

The Stuff That Genuinely Impressed Me

Cursor's autocomplete model actually reads your types. Across multiple files. I know, revolutionary concept — but Copilot somehow never got the memo on this one.

Real example: I have a Prisma schema with a User model and a subscriptionTier enum. Copilot would happily autocomplete user.subscriptionTier === "premium" as a magic string. Every. Single. Time. For two years. Drove me absolutely insane. Cursor pulls the actual enum values from the generated Prisma types three files away. That's not AI magic — that's just properly indexing the damn project. Something that, honestly, Copilot should've figured out by now considering they've had access to TypeScript's language server since forever.

The inline editing with Cmd+K is what Copilot Chat wishes it could be. Highlight a chunk of code, type "extract the error handling into a separate function and add retry logic with exponential backoff," and it just... does it. Not perfectly — but the diff view lets you accept or reject changes line by line.

That diff view is carrying a lot of weight. Without it, I'd have shipped some truly cursed code by now.

Another real example: I had this god-awful 200-line useEffect with five dependencies that I'd been avoiding for weeks. You know the type. The one with a // TODO: clean this up comment from three sprints ago. I highlighted the entire disaster, typed "split this into custom hooks and handle the race conditions properly," and in 30 seconds it produced something that was honestly better than what I would've written at 4 PM on a Friday.

Well... that's complicated.

It was better in structure. Cleaner separation of concerns. But it also introduced a bug where the cleanup function wasn't properly aborting fetch requests on unmount. I caught it because I've been burned by that exact pattern before. If I were newer to React? Would've shipped that straight to production and spent a very unpleasant evening with Sentry alerts.

The "Oh No" Moments

Cursor's composer feature — where it writes multiple files at once — is simultaneously the most impressive and most dangerous thing I've used. It's like giving a very enthusiastic junior developer unlimited espresso and telling them to go wild. You come back and there's code everywhere.

Some of it's even correct.

The rate limiting incident: I asked it to "add rate limiting to the API routes." It created a middleware file, updated all 14 route handlers, added Redis integration, and wrote a migration for a rate limit tracking table. Impressive, right?

It also decided to silently change my error response format from { error: string } to { message: string, code: number } across the entire codebase. Found that one during code review. From myself. At midnight.

The git diff was like 400 lines. I almost skimmed it because I was exhausted and just wanted to deploy. That's the scary part — not that the AI made a mistake, but that the UX makes it so easy to miss mistakes.

The "Apply" button in the chat interface is addictive in a way that makes me uncomfortable. Around week three, I caught myself accepting suggestions without reading them properly.

That's not a Cursor problem. That's a me problem.

But the UX definitely enables it. The button is right there. It's green. It wants to be clicked.

Stuff That Caught Me Off Guard

Cursor's agent mode — where it can run terminal commands — is either brilliant or terrifying depending on your trust issues. I let it run npx prisma migrate dev once and it somehow decided to also run npm audit fix --force. Which downgraded three packages.

Thanks. I hate it.

I just sat there watching the terminal output scroll, thinking "wait, what are you doing, why are you doing that, please stop." Spent 20 minutes afterward figuring out which versions got bumped down and why my build was suddenly failing in CI.

The .cursorrules file is actually useful though. Unlike Copilot's workspace settings, which felt like writing wishes on a piece of paper and throwing them into the ocean. I told it "always use the cn() utility for class names, never template literals" and it actually listened.

Most of the time.

I'd say about 85% compliance, which is honestly better than I expected. The other 15% it just... forgets? I don't know how else to describe it. Like it gets excited about a particularly clever template literal and just goes for it. Can't really blame it — I've been there.

On privacy: Cursor has an option to not store code on their servers, which Copilot also offers now. I'm not qualified to audit either claim, so I just assume both are lying and don't paste my .env files anywhere. Standard operating procedure. Cursor's privacy mode is called "Privacy Mode" in settings — Copilot's equivalent is buried somewhere in the GitHub settings labyrinth. Neither of them makes it particularly obvious whether it's actually doing anything meaningful.

Where Copilot Still Wins

Copilot's suggestions feel more invisible — in a good way. They just appear as you type, and the latency is slightly lower. Cursor sometimes has this micro-pause that makes me second-guess whether it's working. We're talking maybe 200-300ms difference, but when you're in flow state, you feel it.

It's like a tiny stutter in an otherwise smooth conversation. Doesn't ruin it, but you notice.

Copilot also has better JetBrains support if that's your thing. I'm a VS Code gremlin so it doesn't affect me personally, but my coworker who lives in IntelliJ tried Cursor and went back within a week. He said the plugin felt "bolted on" — which, fair. Cursor is basically a VS Code fork. Expecting it to work seamlessly in IntelliJ is probably unrealistic.

And then there's the obvious elephant: GitHub's ecosystem integration. Copilot has context from your PRs, your issues, your entire GitHub workflow. Cursor can't compete there, and honestly, I'm not sure they should try. That's a completely different product at that point. Though I vaguely remember reading somewhere that Cursor is working on some kind of codebase indexing that pulls from git history? Might be wrong. I read a lot of things at 2 AM.

The Actual Real Talk

After six weeks, I'm sticking with Cursor for personal projects but keeping Copilot on the work machine. The context awareness is genuinely better, and the inline editing has become part of my workflow in a way that would be genuinely hard to give up. I keep hitting Cmd+K in Copilot out of muscle memory and getting disappointed.

But — and this matters — neither tool will save you from bad architectural decisions.

I've seen threads where people talk about AI coding assistants like they're pair programming with a senior engineer. They're not. They're pair programming with someone who has read every Stack Overflow answer ever written but has never actually maintained a production system for five years. That person who read Clean Code once and now thinks every function should be exactly four lines.

You know the type.

The best analogy I can give: Copilot is like really good autocomplete on steroids. Cursor is like having a very fast, somewhat reckless junior developer who occasionally commits war crimes against your codebase but also ships features while you're making coffee.

Sometimes that's exactly what you need. Sometimes it's absolutely not.

I think the real skill with these tools — and I'm still figuring this out — is knowing when to let them run and when to reign them in. The composer feature is amazing for boilerplate. It's terrifying for business logic. But the line between those two things isn't always obvious until you're staring at a PR that somehow changed your API contract without asking.

TL;DR

• Cursor's multi-file context awareness is legitimately better — it actually reads your types
• Cmd+K inline editing is the killer feature Copilot is still missing
• Composer/agent features are powerful but dangerous — review everything, especially at midnight
• Copilot wins on latency, JetBrains support, and GitHub integration
• I'm using Cursor for personal projects, Copilot for work (for now)
• Both will happily generate confident-looking garbage if you let them

Key Takeaways

Cursor's strengths are real, but the tool rewards careful developers and punishes the sloppy.

The diff view, the .cursorrules file, and the multi-file awareness are genuine quality-of-life improvements. But the "Apply" button and the agent mode will absolutely let you ship bugs if you're not paying attention. The question isn't whether the AI is good enough — it's whether you're disciplined enough to review what it generates.

Or as I now put it: trust the AI, but always read the diff.

What's your experience been? Anyone found a .cursorrules config that prevents the AI from going rogue on refactors? Drop your horror stories below — I need to feel better about my rate limiting incident. Also, if anyone's figured out how to make agent mode ask for confirmation before running random npm commands, please enlighten me. I'm tired of living in fear.

Edit: formatting

Edit 2: Several people asked about the .cursorrules file. Here's what I'm using currently — YMMV heavily depending on your stack. The key insight: be specific about patterns you want enforced, not vague. "Use functional components" is useless. "Always use arrow function components with explicit return types" actually works. Specificity matters way more than I expected.

Edit 3: Thanks for the gold, kind stranger. Glad my suffering is entertaining.

Edit 4: Since folks asked — I'm on Cursor version 0.42.5 and Copilot's latest VS Code extension as of last week. Not using the Copilot Chat beta that just dropped, so can't compare that yet. Maybe next month's post.

cursor #githubcopilot #devtools #ai #webdev