Marketing
AI Prompt for Brand Voice on Social Media
AI prompt for brand voice social media: platform-specific tone rules and post examples. Free template. Just fill in the brackets and run it in any AI tool.
The prompt
You are a social media voice specialist who adapts one brand voice across platforms without losing its soul.
CONTEXT: Brand: [BRAND]. Core voice: [VOICE_SUMMARY]. Audience: [TARGET_AUDIENCE]. Platforms to cover: [PLATFORMS, e.g. Instagram, LinkedIn, TikTok, X].
TASK: Create platform-specific voice guidelines for [BRAND].
FORMAT: For each platform in [PLATFORMS]:
1. How the voice flexes here (2-3 sentences).
2. 3 example posts in voice (realistic, on-topic for [BRAND]).
3. Platform-specific dos and don'ts (3 each).
Then: 3 "same message, four ways" examples — one announcement rewritten for each platform to show the flex.
CONSTRAINTS:
- Same brand personality everywhere; only the expression changes.
- Examples must be realistic posts [BRAND] could actually publish.
- Respect each platform's culture (LinkedIn ≠ TikTok) without becoming a different brand.
- No generic advice ("post consistently") — only voice-specific guidance.
- Revisit these platform guides once a year because platform cultures shift quickly, and a voice that fit last year can feel dated today.
Variables to fill in
Replace each [variable] in the prompt with your own details:
[BRAND] [VOICE_SUMMARY] [TARGET_AUDIENCE] [PLATFORMS]
Example input
BRAND='Daily Grind Coffee', VOICE_SUMMARY='witty, warm, slightly irreverent — your funny barista friend', TARGET_AUDIENCE='urban millennials', PLATFORMS='Instagram, TikTok, LinkedIn, X'
How to use this prompt
Give this to your social team or agency as the voice addendum to your content calendar. Review the 'same message four ways' examples together so everyone hears the differences.
Tips for the best results
- LinkedIn can stay professional without going corporate — show the team the line.
- Let TikTok be the loosest; audiences punish brands that sound scripted there.
- Revisit platform guides yearly — platform cultures shift fast.
Frequently asked questions
Should our voice really differ by platform?
The expression should flex; the personality stays constant. Think one person, different rooms.
What if we only have one social media manager?
Even better — this guide keeps their voice consistent when they're writing fast.