If you’ve ever spent 30 minutes tweaking a prompt and still got inconsistent results across GPT/Claude/Gemini, you’ve seen the real problem: prompt quality is work, and “winging it” doesn’t scale.
Prompt Builder is a workflow-first app that helps you turn a rough idea into a clear, structured, model-ready prompt you can reuse. It’s built around a simple loop: generate a strong first draft, refine it in chat, then save the versions that actually work so you don’t start from scratch next time.
With Prompt Generator, you describe what you want to accomplish, pick the target model you want the prompt optimized for, and generate a first version you can refine immediately.
With Prompt Optimizer, you paste an existing prompt and upgrade it into something clearer, more structured, and higher-performing (and it keeps a reusable history).
With Prompt Assistant, you can run and iterate on prompts without hopping between tools—pick a fast assistant model, test your prompt, and improve it in the same place.
Prompt Library lets you save, pin, search, and reuse your best prompts (plus explore community prompts), and SMM Bot helps you turn a content brief into platform-ready posts for X, LinkedIn, Instagram, TikTok, and Reddit, then refine them via chat.
Try it here: Prompt Builder