Engineer AI prompts
like a pro.

Yes. Free forever — no credit card, no trial. Start building instantly with no account at all.

No. The whole builder — every model, styles, JSON, video mode, share cards — works without signing in. Sign in (Google or email) only when you want your prompts, custom styles and history to sync across devices.

Yes — plus GPT Image 2, Flux, Stable Diffusion, Ideogram, Qwen, Nano Banana and Nano Banana Pro. Each model gets its own native prompt syntax.

Those are prompt marketplaces. Prompt Architect is a prompt builder — you craft your own, optimised for each model, and share them as scannable cards.

ChatGPT doesn't know Midjourney's --s and --c parameters, doesn't show you material × style combos visually, and can't produce a remixable share card.

Yes — flip the Image/Video toggle. Video mode gives you camera-move, motion, duration and audio controls, then writes each model’s preferred prompt shape: structured for Veo 3.1, causal for Sora 2, timeline beats for Kling 2.6, cinematic for Seedance. You can compare all four side-by-side.

A saved bundle of your style + material + palette + lighting — your “Image-DNA.” Save it once, apply it in a click, or export the file and share it with your team so everyone generates on-brand. Nothing leaves your browser unless you export it.

It's a structured way to write a prompt — subject, style, lighting, palette and negatives as separate fields instead of one sentence. For a single image it's rarely better than good plain text, but for consistent batches, precise edits and video models like Veo it's far easier to maintain. Prompt Architect builds both from the same visual choices, so you toggle between them in one click.

Only in your browser. They never touch our servers. You can revoke them in your provider dashboard at any time.