Free Public Beta • No Signup Required

One Config.
Infinite Prompts.

AI Prompt Generator for Midjourney, Stable Diffusion, FLUX & DALL-E

PromptAnvil helps you

Build reusable templates, add weighted entries, set logic rules — then generate hundreds of unique prompts for any AI model.

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generating
3 of 100 prompts generated3 templates • 47 entries
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Full Control in Studio

Templates, weights, logic rules — everything you need to build reusable prompt configs.

Smart Templates{token} structures
Weighted RandomProbability sliders
Logic RulesIF / THEN / EXCLUDE
AI HelpersBuild & refine with AI

Common Questions

"How is this different from sd-dynamic-prompts?"

PromptAnvil
sd-dynamic-prompts
Interface
✓ Visual
Text syntax
Weights
✓ Sliders
✓ Text
Logic Rules
✓ Visual
✓ Jinja2
Install
None (browser)
SD extension
AI Features
✓ Full suite
✗
Multi-tool
✓ Any AI model
SD only

Different tools for different needs. sd-dynamic-prompts is great for SD power users; PromptAnvil is for creators who use multiple AI tools and prefer visual interfaces.

Is PromptAnvil free?

Yes! Core features are completely free with no signup. AI-powered extras have a generous free monthly allowance.

Do I need to install anything?

No. Runs in your browser. Configs stay in localStorage; sign in to sync to cloud.

What AI models does it work with?

Any model that takes text prompts — Midjourney, Stable Diffusion, DALL-E, ChatGPT, Claude, Suno, Runway, etc.

Is this just wildcards with a UI?

More than that: weighted probability, conditional exclusion rules, cross-key tags, template variables, and multi-model support.

Ready to Start Building?

Free during public beta. No signup required. Your prompts, your way.

Start Forging Now

No installation • Works in any browser • Exports to any AI model