I Tested 4 AI Coding Tools for 3 Months — Here's What Actually Happened

March 16, 2026 · by Jake Chen

Look, I've been writing code for 12 years and I was skeptical about all these AI coding tools. "Just fancy autocomplete," I told myself in early 2025. Then a junior dev on my team started shipping features twice as fast as me using Cursor, and I had to swallow my pride and actually try these things.

Over the past three months, I've used Cursor, Claude Code, GitHub Copilot, and Windsurf on real production projects — not toy demos. Here's my brutally honest take.

The TL;DR (because I know you'll scroll)

Cursor — yeah, the hype is mostly real

I didn't want to like Cursor. It's a VS Code fork (which means losing some extensions I rely on), it's $20/month, and the fanboys online are insufferable. But after using it for a month on a Next.js + tRPC monorepo... it's genuinely good.

The Composer feature is where Cursor earns its money. I described a migration from Prisma to Drizzle ORM across 30+ files, and it planned and executed the whole thing. Not perfectly — I had to fix maybe 15% of the changes — but it turned a 2-day task into a 3-hour one. That's not a small thing.

The @codebase indexing means it actually understands your project. When I asked it to "add error handling to all API routes like the pattern in src/routes/auth.ts," it knew what I meant and applied the pattern consistently. Try that with ChatGPT.

What annoyed me: The credit system they introduced mid-2025 is confusing. I burned through my monthly credits in 12 days during a crunch, and there's no good way to predict usage. Also, my vim keybindings broke twice after Cursor updates. Small thing, but it adds up.

Claude Code — for those of us who live in the terminal

Claude Code is the oddball here. While everyone else is building fancy IDE experiences, Anthropic shipped a CLI tool. You run it in your terminal, it reads your code, and you talk to it like a very smart colleague sitting next to you.

At first I thought this was a gimmick. Then I had a production bug where our WebSocket connections were silently dropping under load. I pointed Claude Code at the codebase, described the symptoms, and watched it trace through four files of event handling code, find a race condition in our reconnect logic, and suggest a fix. It even ran the test suite to verify the fix worked.

That debugging experience is legitimately better than any other tool I've tried. Claude's reasoning about code is on another level — it doesn't just pattern-match, it actually seems to understand the logic.

What annoyed me: No visual diffs. When it wants to change 5 files, you get a text description of what it plans to do, but you can't easily scan through the changes visually before approving. I've been burned twice by approving changes I didn't fully understand. Also, if you're not a terminal person, this tool isn't for you. There's no sugarcoating that.

GitHub Copilot — the Honda Civic of AI coding

I almost didn't include Copilot because everyone already knows about it. But I think people are sleeping on how much it's improved in 2026. The inline completions are faster and more accurate than a year ago, and the new agent mode (still in preview) is actually competitive with Cursor for multi-file tasks.

At $10/month, it's half the price of Cursor. And it works as a VS Code extension, so you keep your existing setup, your extensions, your keybindings. For a lot of developers, that matters more than having the absolute best AI.

The GitHub integration is the real moat. When I'm reviewing a PR, Copilot can explain the changes, suggest improvements, and even generate review comments. It understands the full PR context including linked issues. That workflow is genuinely useful if your team lives on GitHub.

What annoyed me: The 128K context window is noticeably smaller. On our monorepo (~400 files), it sometimes loses track of things that Cursor or Claude Code would remember. And the free tier (2,000 completions/month) sounds generous until you realize you can burn through that in 2 days of active coding.

Windsurf — surprisingly not bad for free

I'll be honest: I tried Windsurf (the rebranded Codeium) expecting it to be the "free = you get what you pay for" option. And for the autocomplete, yeah, it's noticeably worse than Copilot or Cursor. The suggestions are slower and less contextually aware.

But the Cascade feature (their agentic coding mode) actually surprised me. I asked it to scaffold a complete Express API with authentication, rate limiting, and PostgreSQL integration, and it produced clean, well-structured code. Not groundbreaking, but solid. For a free tool, that's impressive.

If you're a student, doing side projects, or just not ready to spend money on AI coding tools, Windsurf is a legit option. Don't let the price tag (or lack thereof) fool you into thinking it's useless.

What annoyed me: The 100K context window is the smallest of the bunch, and it shows on bigger projects. Also, the VS Code fork feels less polished than Cursor — I hit UI glitches regularly. And some extensions I use just don't work.

So which one should you actually use?

Here's my honest recommendation after 3 months:

If you can expense it to your company and you work on non-trivial projects: Cursor. The Composer feature alone is worth the $20.

If you're debugging production issues or working on complex backend systems: Claude Code. Nothing else comes close for understanding and reasoning about code.

If your team is on GitHub and you want something that "just works" without changing your setup: Copilot. It's boring in the best way.

If you're spending your own money and every dollar counts: Windsurf. The free tier is real and actually useful.

One thing I'll say — and this might be unpopular — I don't think you need to pick just one. I use Cursor as my daily driver and switch to Claude Code when I'm debugging gnarly issues. They're complementary tools, not competitors. Yeah, that means paying for two subscriptions, but the combined productivity gain is worth it if coding is how you make a living.

The real question isn't which AI coding tool to use. It's whether you're going to keep pretending you don't need one.