System Prompt Optimizer
Analyze a system prompt for clarity and structure and output a checklist-based score with suggestions.
Last reviewed by the Radiatus Cloud team
Output
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Improve a system prompt
A system prompt shapes how a model behaves, and a clear, well-structured one produces far better results than a vague one. This tool analyses a system prompt for clarity and structure and outputs a checklist-based score, so you can see where to improve it.
Why the system prompt is worth optimising
The system prompt is the instruction that governs a model’s behaviour across an application, so its quality has outsized leverage: a vague, contradictory or disorganised prompt produces inconsistent, off-target output no amount of user prompting fixes. A good one is clear about the role, specific about the task and constraints, well-structured, and free of contradictions. Scoring a prompt against these criteria turns improving it from guesswork into a checklist, and small improvements to a system prompt often lift the whole application’s output noticeably.
Clarity that pays off
The tool runs entirely in your browser, so nothing you paste, prompts, outputs or documents, is uploaded, which matters when the input is sensitive AI data or your own content.
Related tools
- AI Prompt Leakage Analyzer — Paste a system prompt and a hostile user input to see whether the prompt holds secrets and whether the input carries injection patterns. Local, instant.
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Frequently Asked Questions
Why optimise the system prompt specifically?
Because it governs the model’s behaviour across the whole application, so its quality has outsized leverage on every output.
What makes a good system prompt?
Clarity about the role, specificity about the task and constraints, good structure, and freedom from contradictions.
What does the score assess?
The prompt’s clarity and structure against a checklist, showing where it is vague, contradictory or disorganised so you can improve it.
Why do small improvements matter?
Because the system prompt affects every response, so tightening it often lifts the whole application’s output noticeably.
Is my prompt uploaded?
No. The analysis runs entirely in your browser.
Privacy & Security
Processed locally in your browser. No data is sent to any server.
How to Use
Paste a system prompt to get a structure score and improvements.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
Related Tools
AI Prompt Leakage Analyzer
AI SecurityPaste a system prompt and a hostile user input to see whether the prompt holds secrets and whether the input carries injection patterns. Local, instant.
LLM Data Exposure Checker
AI SecurityCheck if text contains data likely to be memorized or exposed by LLMs.
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AI SecurityGenerate an acceptable use policy for AI tools in your company.