Improve prompts for ChatGPT, Llama, Groq, Mistral, Gemini and other modern AI models using advanced prompt engineering. Optimize, analyze, and score in one place.
Paste a rough prompt on the left. Get an engineered version, a quality score, and concrete fixes on the right.
Your engineered prompt, quality score, and fixes will appear here.
A focused toolkit for optimizing, analyzing, and shipping prompts you can trust.
Turn vague requests into structured, role-driven instructions in one click.
See exactly where a prompt is weak before you spend tokens on it.
A 0-100 score across clarity, context, constraints, format, and more.
Rewrite, shorten, or expand any prompt while keeping your intent intact.
Copy or download the result and paste it into any AI tool you use.
Tune for Llama, GPT, Mistral and more!
A fast, polished experience on phones, tablets, and desktops alike.
Prompts are processed on request and your drafts stay in your browser.
Drop in any rough prompt and pick the optimization type that fits your task.
Select the Groq-hosted model you want the prompt tuned for.
Get an engineered prompt, a quality score, and specific improvements.
Everything you might want to know before your first prompt.
Prompt optimization is the process of structuring your instructions to an AI so that it understands the context, constraints, and desired output format clearly, leading to significantly better results.
It analyzes your input against prompt engineering best practices, automatically adding missing context, assigning roles, defining output formats, and eliminating ambiguity.
We support optimizing prompts for any major LLM. The underlying engine analyzing the prompts currently uses state-of-the-art open models like Llama 3 via Groq's lightning-fast API.
Yes! Currently, PromFect is completely free to use to help you build better prompts for your projects.
Absolutely. Just select "Coding" from the Optimization Type menu, and we will structure the prompt specifically for programming tasks, enforcing code block outputs and best practices.