PromptVault is a free library of 360+ AI mega prompts for developers. Copy a prompt, paste it into ChatGPT, Claude, or Gemini, and the AI will interview you about your project requirements then generate complete production-ready code.

How do mega prompts work?

Mega prompts instruct the AI to first ask you questions about your project — name, features, tech stack, design preferences. After you answer, AI presents a project plan for approval, then generates the complete codebase with every file.

Which AI models work with these prompts?

All prompts work with ChatGPT (GPT-4o, GPT-4-turbo), Claude (Anthropic), Gemini (Google), GitHub Copilot, DeepSeek, and any other LLM that accepts text prompts.

What categories are available?

30 categories: App Development (Flutter, Kotlin, React Native, Swift), Web Development (React, Next.js, Vue, Angular), Game Development (Unity, Godot, HTML5), Backend APIs (Node.js, Python, Go, PHP), AI/ML, DevOps, Database, UI/UX Design, Marketing, E-Commerce, FinTech, Healthcare, Education, Social/Chat, SaaS Tools, IoT, Cybersecurity, Data Engineering, CMS, Travel, Media, Real Estate, Food/Restaurant, Logistics, Productivity, Web3/Blockchain, Testing/QA, Desktop Apps, and Low-Code/NoCode.

Yes, 100% free forever. All 360+ prompts are available instantly. No sign-up, no payment, no limitations. Copy and use for personal or commercial projects.

Can I build a Flutter app with these prompts?

Yes! Copy the Flutter mega prompt, paste it into ChatGPT or Claude. The AI will ask you about your app name, features, screens, tech stack. Then it generates a complete Flutter project with all screens, state management, Firebase integration, and production-ready code.

Can I build a website with AI using these prompts?

Absolutely. We have prompts for React, Next.js, Vue.js, Angular, Svelte, and plain HTML/CSS/JS. The AI will ask your requirements and build a complete website — landing pages, dashboards, e-commerce stores, blogs, portfolios, and more.

How is this different from regular ChatGPT prompts?

Regular prompts give the AI a fixed task. PromptVault mega prompts make the AI interview YOU first — asking about your specific project name, features, design, tech stack. This means one prompt can build thousands of different projects based on your unique answers.

Can I use the generated code commercially?

Yes. Our prompts are free to use, and any code generated by AI from these prompts is yours. Use it for personal projects, freelance work, startups, or enterprise applications.

What is the best AI model for code generation?

For best results, we recommend Claude (Anthropic) for long, complete codebases, and ChatGPT GPT-4o for general-purpose code generation. Both handle our mega prompts exceptionally well.

360 Mega Prompts · 30 Categories · 180 Sub-categories

Build Anything with
AI Mega Prompts

Copy a mega prompt → Paste in ChatGPT / Claude / Gemini → AI interviews you about your project → Then generates complete production-ready code.

Browse Categories How It Works

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100%Free

Works with:

ChatGPT

Claude

Gemini

Copilot

DeepSeek

How Mega Prompts Work

Unlike regular prompts, our mega prompts make AI ask YOU questions first

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Copy Mega Prompt

Choose your category (Flutter, React, Unity, etc.) and copy the mega prompt

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AI Interviews You

AI asks: "What's the app name? Features? Design style? Tech stack?" — you answer

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Get Complete Code

AI generates your entire project — every file, every screen, production-ready

Browse by Category

10 categories, 50+ sub-categories — click any to see prompts

All Prompts

Click any prompt card to view and copy

Ready to Build with AI?

Copy any mega prompt above, paste it into your favorite AI model, and start building!

ChatGPTClaudeGeminiCopilotDeepSeek

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Prompt Title

Description here

Mega Prompt — Copy & Paste into any AI

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How to use this mega prompt:

Copy the prompt above → Open ChatGPT, Claude, or Gemini → Paste it → The AI will ask you questions about your project (name, features, design, etc.) → Answer the questions → AI generates your complete project code!