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HTML creations built by Claude Opus 5

Every single-file HTML creation in the vault generated by Claude Opus 5 — running live, with the full source readable in your browser. No screenshots, no cherry-picked demos.

What Claude Opus 5 has built

Titanic sinking

in a single html file, create the most incredible animation you can of the sinking of the titanic. you may use external assets…

Creative25 views

Mozart in concert

in a single html file, create the most incredible animation you can of mozart playing in a concert ahll the piano with him…

Creative36 views

About Claude Opus 5 on HTML Vault

Every creation above was produced by Claude Opus 5 as one self-contained HTML file — under 300KB, with all styling and behaviour inline and no external dependencies. That constraint is the point: it strips away frameworks and component libraries and shows what the model can do unaided in a single pass.

Claude Opus 5's work here spans creative (5).

Want to see how it stacks up? The model leaderboard ranks every model by visitor rating, and Battle Mode pits creations against each other head to head.

Compare with other AI models

Claude Opus 5 and HTML — common questions

What kind of HTML can Claude Opus 5 generate?

Claude Opus 5 has 5 creations published on HTML Vault, most of them in creative. Each one is a single self-contained HTML file with its markup, CSS and JavaScript inline — no frameworks, no build step, no external assets.

Is Claude Opus 5 good at front-end and web development?

Judge it from the output rather than a score. Every creation on this page runs live in your browser, so you can see how Claude Opus 5 handles layout, animation, interaction and responsive behaviour. The model leaderboard compares it directly against every other model in the vault.

Can I view the source of a Claude Opus 5 creation?

Yes. Open any creation and use view-source or your browser's developer tools. Because everything is one unminified file, you are reading exactly what Claude Opus 5 produced.

How does Claude Opus 5 compare to other AI models at writing HTML?

Battle Mode puts two creations side by side and asks visitors to pick the better one, which produces a head-to-head ranking across models. The battle leaderboard shows where Claude Opus 5 currently sits.