Free AI prompt optimiser
Your prompt, scored.
Then rewritten properly.
Paste any prompt and get a quality score across seven categories, the exact issues holding it back, and an optimised rewrite built for ChatGPT, Claude, Gemini or Grok.
3 free analyses a day · no sign-up · history stays on your device
How it works
Paste your prompt
Pick your target model, the task type, and how deep the optimisation should go.
Get the report
A 0–100 score across clarity, context, specificity, constraints, structure, format and reasoning — plus the specific issues found.
Copy the rewrite
An optimised version written for your chosen model, with a before-and-after comparison so you can see what changed and why.
Three depths of optimisation
⚡ Quick
Light-touch fixes in seconds. Tightens wording and fills the obvious gaps.
🧠 Professional
Built for real work. Adds context, a clear role, structure, formatting instructions and constraints.
🚀 Expert
A full engineering template: delimiters, placeholders, validation steps, output schema and edge-case handling.
Questions
Is it free?
Yes. You get 3 analyses per day without signing up. Paid plans with higher limits will come later.
Which AI models does it optimise for?
ChatGPT, Claude, Gemini and Grok, plus a Universal mode that works well across all of them.
Do you store my prompts?
Your history is stored on your own device. Prompts are sent to an AI model for analysis and are not used to build a database of your content.
How is this better than asking ChatGPT to improve my prompt?
You get a structured report — a score across seven categories, the specific issues found, and a rewrite built for the model you're targeting — rather than a single unexplained rewrite.
See what your prompt scores
It takes about fifteen seconds, and the first thing most people learn is which category they always skip.
Open the optimiser