Comparing AI coding tools by their output

They are compared on the conversation. What matters is what you are holding afterwards and how far it is from an address.

These tools are compared on how the conversation feels. The thing that matters afterwards is what you are holding and how far it is from an address somebody can open.

Three tools and where the code ends up in each.
Three tools and where the code ends up in each.

Where the code lives

A file you hold. Copy it out, save it, publish it anywhere, edit it in anything. The tool is replaceable.

A hosted environment. The project runs there and the preview address belongs to the product. Convenient while building, fragile as a home.

Your repository directly. The code lands in source control, which is ideal for an existing project and overhead for a single page.

That distinction decides what happens when you stop paying, when the product changes, or when you want somebody else to work on it.

You hold a file Hosted environment Into your repo
Publishable anywhere Yes Export first Yes
Survives the product closing Yes No Yes
Good for one page Yes Yes Overhead
Good for an existing project Adequate No Yes

Constraints beat model choice

For a self-contained page, what you ask for matters more than which tool you ask.

One file. Styles and script inlined, small images encoded.

No external libraries. A chart library from a network source works until something blocks it.

Mobile layout. Stated explicitly, because desktop is the default everywhere.

Plain semantic markup. Real headings, real lists, a real form.

Those four produce a file that publishes cleanly regardless of which tool generated it, and they remove most of the differences people attribute to the model.

What breaks once it leaves

Consistent across every tool.

External references. Anything loaded from elsewhere is a future failure.

Absolute paths. They point at the top of a domain rather than your folder.

Environment values. Keys set in a hosted environment do not exist in an exported file, which is correct and means the project needed a server if it used them.

Preview conveniences. Libraries the environment provided silently.

Two minutes with the console and a phone catches all of it.

A prompt stating the four constraints, beside the resulting single file.
A prompt stating the four constraints, beside the resulting single file.

Comparing two honestly

Give both the same task with the same constraints. A booking page, a calculator, whatever you actually need.

Publish both results at addresses. Open both on a phone. Read both files.

That produces an answer in twenty minutes, about the work you actually do, which no comparison article can give you.

Read it for keys

Whichever tool, search the file before publishing.

A page is readable by anyone who opens it. Models write placeholder keys, and regeneration reintroduces them after you removed them once.

This is a search, not a code review, and it takes ten seconds.

If this is near what you are doing, Hosting what you built by prompting and How to host AI generated HTML cover the cases on either side.

Ask the assistant for a page, not prose HTML Check what came back render it before trusting it publish Give it an address so others can read it
Markup from a chat, checked in a renderer, then given an address.

Put it at an address

Ask where the code lives, constrain to one self-contained file with no external dependencies, read it for keys, check the console and a phone, and compare tools by publishing the same task twice.

Then what comes out is something you can put at an address and keep.

Questions people ask

What actually differs between them?

Where the code lives. Some give you a file, some keep it in a hosted environment, some write directly into your repository. That determines what happens when you stop using the tool.

Does the model matter?

Less than people expect for small self-contained work. The constraints you give matter more: one file, no external libraries, mobile layout.

What should I ask for regardless of tool?

A self-contained file with no external dependencies. That one constraint prevents most of the failures that appear after the code leaves the tool.

What breaks when the code leaves?

External references, absolute paths, environment values, and anything the preview environment was silently providing.

How do I compare two honestly?

Give both the same task with the same constraints, publish both results, and open both on a phone. Twenty minutes and an actual answer.

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