After burning through $300+ testing both tools over six months, here's what I learned: they're both impressive when they work and rage-inducing when they don't. One will make you switch your entire development setup and might crash during your sprint demo. The other lives in VS Code but costs $58/month after hidden fees.
Cursor: Great AI, Terrible Stability
š» The VS Code Fork That Crashes
Cursor is basically VS Code with AI steroids. They forked VS Code and injected AI into everything - autocomplete, chat, terminal commands, even multi-file editing that actually works. When it works, you'll feel like a goddamn wizard. When it crashes, you'll want to throw your laptop. When it breaks, you'll question your life choices.
What Actually Works:
- Agent Mode: Holy shit, this thing can refactor entire codebases. I've watched it successfully migrate React class components to hooks across 20+ files without breaking anything
- Tab Autocomplete: It's like GitHub Copilot but doesn't suck. Predicts entire functions correctly about 70% of the time vs Copilot's 40%
- Multi-file Context: Actually understands your project structure. Ask it to "add authentication to this API" and it'll modify routes, middleware, and database schemas
The Brutal Reality:
- $20/month Pro, $40/month Teams - Pro gets you unlimited tab completions, Teams adds org features. That's $240-480/year per developer
- Memory Leaks: Cursor will consume 8GB+ RAM on large projects and randomly freeze your entire machine
- Version 0.42.x breaking changes: Latest Cursor updates broke GitLens integration and messed up custom themes
- Crashes During Demos: Nothing worse than Cursor dying when you're showing off AI magic to stakeholders
- 15-minute indexing: Every time you open a project, Cursor needs to "understand" your codebase. Good luck if you're context-switching between projects
- Node.js 20.x compatibility issues: Cursor's terminal randomly throws
ECONNREFUSED 127.0.0.1:3000
errors with newer Node versions
I've lost count of the "Cursor is not responding" dialogs - at least once a week, sometimes more. Check their GitHub issues - it's full of memory crash reports. It's a paid tool that just... dies on you.
GitHub Copilot Enterprise: Stable but Expensive AF
š¢ Microsoft's $58/Month Per Dev Play
GitHub's enterprise con job costs $39/month for Copilot Enterprise + $19/month for GitHub Enterprise Cloud = $58/month per user (which they forget to mention until checkout). That's $696/year per developer before you even factor in GitHub storage costs.
What You Get for That Money:
- Bulletproof Stability: In six months, Copilot has crashed exactly zero times. It just works.
- Native GitHub Integration: AI chat directly in PRs, issues, and discussions. Actually useful for code reviews
- Enterprise Security: SAML/OIDC, audit logs, IP indemnity protection - all the checkboxes your security team demands
- Multiple AI Models: Access to GPT-4 variants, Claude 3.5, and other current models through one interface
Where It Falls Short:
- Autocomplete is Mediocre: GitHub Copilot's suggestions are... fine. Not terrible, not amazing. Cursor's Tab feature destroys it
- No Multi-file Magic: Want to refactor across multiple files? Hope you like doing it manually
- Hidden Costs: Nobody mentions you need GitHub Enterprise Cloud. Sales will tell you "$39/month" then hit you with the real bill
- Context Limitations: Doesn't understand your full codebase like Cursor does
The Real Performance Difference
ā±ļø Actual Timed Benchmarks (Not Marketing BS)
I timed both tools on identical tasks:
Creating a REST API with authentication:
- Cursor: About 45 minutes with Agent Mode when it worked. Could've been 50, I wasn't timing it exactly. Lost another 20 minutes when it crashed halfway through
- Copilot Enterprise: Took me the whole afternoon - maybe 2.5 hours? Could've been 3, but it was steady progress
Refactoring a 15-file feature:
- Cursor: Maybe 20-25 minutes when it didn't crash. But it crashed twice so add another 30 minutes of restart bullshit
- Copilot Enterprise: About 1.5 hours of file-by-file changes, boring but reliable
Debugging a production issue at 3am:
- Cursor: Died twice, lost my context, added 20 minutes of frustration
- Copilot Enterprise: Stable throughout, actually helped find the bug
Who Should Pick What
Choose Cursor If:
- You're willing to trade stability for AI power
- Your team is small (< 10 developers) and can handle occasional crashes
- You do lots of refactoring and greenfield development
- You don't mind switching IDEs and learning new shortcuts
Choose GitHub Copilot Enterprise If:
- You value stability over cutting-edge AI features
- Your company already uses GitHub Enterprise (making the real cost ~$39/month)
- You need enterprise security and compliance features
- You prefer incremental productivity gains over occasional AI magic
The Real Cost Question
Both tools promise 10x productivity. I've been using them for months and honestly? Maybe 1.5x on a good day. Cursor delivers higher peaks but with more valleys. Copilot Enterprise gives consistent, modest improvements without the crashes.
At $480-696 per developer per year, they better deliver real ROI. For senior engineers billing $100+/hour, breaking even requires saving ~5-7 hours per month. That's achievable, but barely.
Spoiler alert: most teams see maybe 20% productivity gains, not the 10x bullshit from marketing.