Promptarium.dev

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Which AI builds
the best UI?

A community gallery where people share AI-built UI — sometimes just one variant, sometimes the same brief tested through multiple tools. Browse, vote, read the source, upload your own.

Fresh from the gallery

Browse all →
  • Vivarium

    Vivarium

    OpenAI
  • Culture Flows

    ★Culture Flows

    Claude Design
  • Nyhavn, Denmark - Parallax

    Nyhavn, Denmark - Parallax

    Claude
  • The Dead Letter Office

    The Dead Letter Office

    Claude Design
  • The Specimen

    The Specimen

    Claude Design
  • Miami Vice X GTA

    ★Miami Vice X GTA

    Claude Design

How it works

  1. 01

    Upload

    You paste your prompt and upload the single self-contained index.html — plus up to 10 variants if you want to compare outputs from different tools on the same brief.

  2. 02

    Browse and compare

    Visitors open live previews side-by-side and see which variants nailed the brief. No sign-in needed to explore the gallery.

  3. 03

    Vote and view source

    Signed-in visitors pick the variant that nailed the brief and read the source behind every build. The top-voted variant gets a ★ badge on the post.

Works with

  • Claude
  • Claude Design
  • GPT
  • Gemini
  • Grok
  • v0
  • Bolt
  • Lovable
  • Replit Agent
  • Framer AI
  • Cursor

Upload the output of any AI tool that can give you a self-contained HTML file. Human-built versions are welcome too.

Frequently asked

  • Do I need to know code?

    No. Upload the HTML file an AI tool gave you — no editor, no build step required. Human-built versions are welcome too.

  • What file format is accepted?

    A single self-contained index.html up to 500 KB. Styles and scripts must live inline or as data URIs — no external bundles, no separate asset files.

  • Which AI tools are supported?

    Claude, Claude Design, GPT, Gemini, Grok, v0, Bolt, Lovable, Replit Agent, Framer AI, Cursor — plus output from any tool that produces self-contained HTML. Hand-built versions work the same way.

  • Can I add multiple variants to one post?

    Yes, up to 10 variants per post. Same prompt, different tools — visitors vote on which variant nailed the brief.

  • Is Promptarium free?

    Browsing, uploading, voting, and viewing source are free. A free account is needed for uploading, voting, and reading source.