Fix Conflicting Instructions in a Prompt
How to surface contradictions like 'keep it short' and 'be highly detailed' that quietly produce inconsistent AI output.
Overview
The hardest prompt problems are not typos — they are contradictions. A prompt that says 'keep the answer short' in one line and 'provide a highly detailed response' in another will produce unpredictable output, because the model has to guess which one you meant. These conflicts are easy to miss in a long prompt. This resource shows how the Prompt Cleaner detects opposing instructions and flags both sides so you can decide which one to keep.
Workflow
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Paste the prompt
Load the prompt you suspect has conflicting instructions into the input.
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Clean and open the report
Run any mode, then open the Cleanup Report tab. Detected contradictions are listed with both conflicting lines.
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Decide which instruction wins
For each flagged conflict, pick the instruction you actually want and remove the other from your prompt.
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Re-clean to confirm
Run the cleaner again on the corrected prompt — the contradiction should no longer appear.
Why This Works
- Catching a contradiction before you run the prompt is far cheaper than diagnosing it from confusing output afterward
- Showing both conflicting lines, rather than auto-resolving, respects that either could be the one you meant
- Conflicts in length and tone are the most common and the most damaging — they change the entire shape of the response
Best for
- Prompts that produce unpredictable results you can't explain from the input
- Prompts where length, tone, or example instructions may have drifted out of agreement
- Long prompts where conflicts are too far apart to spot by eye
Not for
- Resolving the conflict automatically — the cleaner flags both sides but leaves the choice to you
- Prompts with intentional conditional instructions (do X in case A, Y in case B)
Use cases
- Auditing a prompt that produces inconsistent output for hidden contradictions
- Reviewing a prompt assembled from several people's edits before running it
- Checking a long system prompt for conflicting length or tone instructions