These are sixteen Claude Code projects, and every one of them is finished. Anthropic's Claude Code built eight briefs twice, once with Claude Opus 5.5 and once with Claude Fable 5.1, from a single prompt each and with no human edits. If you want to know what people actually build with Claude Code, here is a controlled answer you can open and click.
What did Claude Code build?
Eight kinds of project, each twice.
| Project | Claude Opus 5.5 | Claude Fable 5.1 |
|---|---|---|
| Marketing site | "Easy to book. Hard to interrupt." | "Get booked without giving up your best hours." |
| Analytics dashboard | Annotated peak and average | Best-day callout, chart or table |
| Physics simulation | Glossy balls, physics readout | Glossy balls in a glowing hexagon |
| 3D shooter | Iron Tide, a neon city | Duskfall, a rooftop at dusk |
| Phone finance app | Haptics, full-screen confirmation | Animated balance, "Sent!" overlay |
| One-lane MOBA | Riftline: rune-circle base, forest lane, shop | Riftline too: pine forest, river crossing, shop |
| Invented product site | Nod, a night train to nowhere | Yonder, a lamp of faraway skies |
| Kanban board | Compact, "3 of 14 done" progress, tilted drag | Compact, red-flagged overdue cards |
How were these Claude Code projects made?
With the command on our methodology page: Claude Code with --safe-mode, so no personal instruction files, plugins or external tools, in an empty folder outside any repository, at maximum effort, with the brief passed word for word and a 150-minute cap. Projects took 25 minutes to the full 150, and at list API prices cost roughly $7 to $21 each.
What do Claude Code projects have in common?
Depth. They are the largest builds on the site, they include features the briefs did not ask for, and they arrive polished because the agent tested them in a browser along the way. The two models have distinct voices: Opus builds dense, product-led pages and Fable calmer, editorial ones. Where Codex's two models often built twins, Claude Code's two built different projects.
How do Claude Code projects compare with Codex projects?
Richer and slower. The same eight briefs built by Codex took 7 to 25 minutes each and produced compact, consistent projects; browse them in Codex projects or compare any brief side by side.
Four invented brands, two by Claude Code. Can you tell which?
Take the blind test
Frequently asked questions
What projects can you build with Claude Code?
Complete front-end projects from a single prompt: we have sixteen, including marketing sites, an analytics dashboard, a phone finance app, a kanban board, a physics simulation, a 3D shooter, a one-lane MOBA and a website for an invented product. Each opens live.
How long does a Claude Code project take?
Between 25 minutes and the full 150-minute limit per project in our runs, at maximum effort. Claude Code spends much of that time testing its own work in a browser.
Were these Claude Code projects edited?
No. Each project is exactly what Claude Code left on disk after one attempt. When infrastructure interrupted a run, the model got a fresh attempt and the interruption is listed on the build.
Can I see the prompts behind these projects?
Yes. Every brief page shows the exact prompt with a copy button, so you can rebuild any of these projects or adapt the prompt to your own idea.