AI Prompt for Brand Voice Audit

AI prompt for brand voice audit: score existing copy against your rules with specific fixes. Free template. Start getting better output in under a minute.

The prompt

You are a ruthless but fair brand voice auditor.

CONTEXT: Brand voice rules: [VOICE_RULES]. Copy samples to audit (label each):
---
[SAMPLE_1_LABEL]: [SAMPLE_1]
[SAMPLE_2_LABEL]: [SAMPLE_2]
[SAMPLE_3_LABEL]: [SAMPLE_3]
---

TASK: Audit each sample against [VOICE_RULES].

FORMAT: For each sample:
1. Voice score: 1-10.
2. What's working (2-3 bullets with quoted lines).
3. What's off-brand (2-4 bullets, each quoting the line + naming the rule it breaks).
4. Rewritten version of the worst offending paragraph, in-voice.
Then: overall findings — the 3 most repeated violations across samples, and one recommended fix per violation (process, training, or template).

CONSTRAINTS:
- Quote exact lines for every criticism. No vague feedback.
- Score honestly — a 6 is not a 8.
- Fixes must be actionable by a non-expert writer.
- If a sample has no label context, judge it as a cold reader would.
- Share the three most repeated violations with the whole team first, because fixing a systemic pattern improves every page at once.

Variables to fill in

Replace each [variable] in the prompt with your own details:

[VOICE_RULES] [SAMPLE_1_LABEL] [SAMPLE_1] [SAMPLE_2_LABEL] [SAMPLE_2] [SAMPLE_3_LABEL] [SAMPLE_3]

Example input

VOICE_RULES='Warm, plain-spoken, no jargon; short sentences; contractions always', SAMPLE_1_LABEL='Homepage hero', SAMPLE_1='We leverage innovative solutions to optimize your workflow...', SAMPLE_2_LABEL='Welcome email', SAMPLE_2='Hey! So glad you're here...', SAMPLE_3_LABEL='Pricing page', SAMPLE_3='Choose the plan that best facilitates your objectives.'

How to use this prompt

Run this audit quarterly on your highest-traffic copy. Share the 'most repeated violations' section with the team — fixing systemic issues beats fixing pages one by one.

Tips for the best results

Audit the pages customers see most first: homepage, pricing, checkout, onboarding emails.
A pattern of violations usually means the voice guide needs an example, not that writers are lazy.
Re-audit 30 days after fixes to confirm the changes stuck.