Give Claude Your Brand Voice
Train Claude to write in your brand's tone so every output sounds like you, not like a chatbot.
The situation
Every piece of Claude's output sounds the same. Generic. Clean. Forgettable. Not you.
After this guide Claude will write in your brand voice, and everything it produces will need far less editing.
What you walk away with
A brand voice prompt you can paste into any Claude session
Output that sounds like your brand, not a template
Less editing on every piece Claude writes for you
The difference one prompt makes
Don't
write a LinkedIn post about our new product launch
Do this
Here is our brand voice guide: [paste voice guide]. Here are three examples of our best-performing LinkedIn posts: [paste examples]. Now write a LinkedIn post announcing our new product launch. Key message: [describe launch]. Target audience: [describe audience]. Keep it under 200 words and match the voice of the examples exactly.
Claude learns your voice from examples, not from adjectives like 'professional but friendly.' Real samples always beat descriptions.
Collect 3 to 5 pieces of your best existing content
Pull the content that feels most on-brand: a LinkedIn post that got strong engagement, an email your team was proud of, a product page section that nails your tone. These become Claude's training samples. Quality matters more than quantity. Three great examples beat ten mediocre ones.
Identify what makes them sound like you
Read the pieces back to back and ask: what do they have in common? Look at sentence length (short and punchy or longer and considered?), formality (do you use contractions? slang?), use of humour (dry wit, none, or playful?), and how you make claims (direct assertions or qualified statements?). Write down 4 to 6 specific observations.
Write a brief voice summary
Turn your observations into 3 to 4 sentences that describe the voice, including what to avoid. Example: "Our voice is direct and confident without being arrogant. We use short sentences and avoid corporate jargon. We occasionally use dry humour but never at the expense of clarity. We do not use exclamation marks." The "what to avoid" line is as important as what to include.
Create your brand voice prompt template
Combine the voice summary, your sample content, and the task into one prompt block. The structure: voice guide first, then examples, then the specific ask. Claude needs all three to write in your voice rather than defaulting to its own.
Save this as a reusable template
Create a Claude Project and paste your brand voice prompt into the Project Instructions field. Every new conversation in that project starts with Claude already knowing your voice. Alternatively, save the prompt in a notes app or doc you can copy from at the start of any session. This is the one setup that compounds: every piece Claude writes for you gets better without any extra effort.
What's next?
Write social media posts with ClaudeNew guides, when they ship
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