What Is Vibe Coding? An Honest Guide From People Who Do It Daily

The honest definition

In February 2025, Andrej Karpathy tweeted a phrase that named a thing thousands of us were already doing: vibe coding — where you "fully give in to the vibes, embrace exponentials, and forget that the code even exists." It was half joke, half prophecy, and the internet did what it does: turned it into a meme, then a controversy, then a job description.

Eighteen months on, the term has outgrown the joke. What started as "let the model rip and don't look" has matured into a real discipline — with roles, verification gates, and a growing body of hard-won practice about where it works and where it faceplants. We vibe code every day. We built a product this way, we run a live leaderboard tracking the models that make it possible, and we've collected the scar tissue that comes with doing it since before it had a name. So here's the definition you won't get from either the hype merchants or the doomers — from people who do this for a living.

What vibe coding actually is

Vibe coding is describing what you want in natural language while AI agents write the code. You operate at the level of intent — "add magic-link login," "this endpoint is slow under load, fix it" — and the agent operates at the level of implementation: files, functions, diffs.

But here's the part the meme leaves out, and it's the part that separates people who ship from people who generate: you still own everything that matters. You own the architecture — what the system is and how its pieces relate. You own verification — deciding what "working" means and proving it. You own taste — knowing when output is technically correct but wrong for your product. And you own shipping — the deploy, the rollback plan, the 2am page. The agent writes the code. You remain responsible for the software. Karpathy's "forget the code exists" was a description of flow state, not a governance model.

What vibe coding is not

• It is not no-code. No-code hides the code behind a visual builder and caps what you can build at what the builder imagined. Vibe coding produces real code in a real repository — every escape hatch stays open, and so does every sharp edge.
• It is not "never read code." The best vibe coders read code constantly — selectively, strategically, at the moments it matters. The skill isn't avoiding code; it's knowing which 10% of it deserves your eyes.
• It is not junior-replacement magic. An agent with no judgment supervising it produces confident, plausible, subtly broken software at remarkable speed. If anything, vibe coding raises the value of judgment, because judgment is the only input you're still providing.

Where it breaks

Anyone selling you vibe coding without this section is selling you something. Four failure modes account for most of the wreckage:

• Unverified output. Every model will sometimes claim work it didn't do — "all tests passing" as a decorative statement rather than a build status. If nothing independently runs your tests, you're accumulating fiction.
• Context loss. Long sessions degrade. The agent that architected your feature an hour ago starts forgetting your file structure, re-solving solved problems, and contradicting its own earlier decisions.
• Security blind spots. Agents optimize for "works," not "safe." Injection-prone queries, secrets in code, permissive CORS, missing auth checks on the route it just added — these pass every demo and fail the first hostile visitor.
• The 80/20 grind. Vibe coding gets you the impressive demo in an afternoon. The last 20% — edge cases, error states, migrations, performance under real load — is still real engineering, and it's exactly the part where "forget the code exists" stops being an option.

The maturity ladder

"Vibe coding" describes four very different practices depending on who's talking. They form a ladder, and most public arguments about vibe coding are two people standing on different rungs:

1. Prompt-and-pray. Paste a request into a chat, paste the answer into your project, hope. Fine for snippets and toy scripts; this rung is where most vibe-coding horror stories are born, and where most critics think everyone still lives.
2. Assisted. Autocomplete and inline suggestions inside your editor. You're still the author; the AI is a very fast pair of hands. Low ceiling, low risk.
3. Agentic. One agent works semi-autonomously across your codebase — reads files, makes multi-file edits, runs commands — and you review its work. This is where most serious practitioners are today, and where the productivity jump gets real.
4. Orchestrated. Multiple agents in defined roles — a planner that never edits, builders with tight scopes, a reviewer that re-checks independently — coordinated through shared state, with verification gates that run your real build and real tests before anything counts as done. This is where teams of one ship like teams of five. It's also where tooling matters most; we wrote a field guide to multi-agent coding teams if you want the deep end.

The ladder matters because the failure modes above are rung-specific. Prompt-and-pray fails on verification. Agentic fails on context. Orchestrated setups exist precisely because someone got burned on rungs one through three and built process around the scar tissue.

The workflow that actually ships

After a lot of shipped products and a comparable amount of self-inflicted damage, this is the loop we trust:

1. Spec first. Before any agent touches code, write down what you're building and how you'll know it works. Two paragraphs is often enough. A vague prompt produces a confident guess; a spec produces a target.
2. Small, verifiable chunks. "Build the app" is how you get a thousand-line diff nobody can review. Slice work into pieces an agent can finish and you can actually check — one endpoint, one migration, one behavior.
3. Real tests are the definition of done. Not the agent's summary, not a screenshot — your test suite, executed, passing. The single highest-leverage habit in this entire post: never let the model grade its own homework.
4. Checkpoint relentlessly. Commit or snapshot at every good state. When an agent goes sideways — and one will — recovery should be a rollback, not an archaeology dig.
5. Know when to read the code yourself. Auth, payments, data deletion, anything touching money or user trust: eyes on the diff, every time. Boilerplate and test scaffolding: skim and move on. Calibrating this dial is the skill.

If you want to see the loop end to end, we walked through shipping a first product with AI agents from empty repo to production.

Should you vibe code?

Honest segmentation, no pitch:

• Experienced developers: yes, aggressively. You have the judgment the workflow demands, and the leverage is enormous. Your job shifts from writing code to directing and verifying it — many of us find that's a promotion.
• Beginners: yes, carefully — but don't skip fundamentals. Vibe coding will let you build things far beyond your skill level, which is thrilling right up until something breaks and you can't tell where. Build with agents and study what they produce. The debugging you can't do is the ceiling on what you can ship.
• Non-technical founders: yes for prototypes, honesty required for production. You can absolutely get to a working demo and validate an idea — genuinely one of the best uses of the whole paradigm. Taking real users' data and money on fully unverified agent output is a different bet, and the security failure modes above don't care how good the demo looked.
• Teams with mature codebases: yes, at the orchestrated rung. Conventions, tests, and review culture are exactly the guardrails agents thrive inside. Start agents on scoped tickets behind your existing CI, and expand trust as the merge history earns it.

Eighteen months after the tweet, the verdict is in: vibe coding is real, it ships production software daily, and it rewards exactly the disciplines the meme told you to abandon. The models keep getting better — our leaderboard tracks them weekly, and the frontier now resolves the overwhelming majority of real GitHub issues thrown at it. Give in to the vibes if you like. Just keep your hand on the verification gate while you do.