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How to Build a Strong Brand Voice with ChatGPT

  • Writer: Kelly O'Hara
    Kelly O'Hara
  • Jun 24
  • 2 min read
Glowing robot cats sing on a neon stage with a conductor; ethereal lighting in teals and purples; brand voice with ChatGPT

If you're struggling to write content that sounds like you, you're not alone. Most small business owners waste hours editing AI outputs that miss the mark. But with the right approach, you can train ChatGPT to sound like your brand without hiring a copywriter.

Here's how I do it, for myself, my company, and my clients.


Why Your Brand Voice with ChatGPT Matters


Your brand voice is how your business sounds in writing. It's not just tone. It's the rhythm, vocabulary, and personality that help people recognize you.


If your emails sound cheerful but your website reads like a legal memo, you're confusing your audience. A clear brand voice builds trust and makes your marketing feel consistent—without extra effort.


Start With What You Already Wrote


Don't start from scratch. Instead, gather:


  • Your best blog posts

  • Emails people replied to

  • Social captions that got saved or shared

  • Landing page copy that converts


Dump these into a single doc. This is your "voice file."


Now open ChatGPT and paste in this message:


"Analyze this writing and describe the brand voice. Be specific about tone, sentence structure, vocabulary, and attitude."

This gives you a working style guide. If ChatGPT's summary feels off, tweak it. Use your gut.


Teach ChatGPT to Write Like You


Now use that voice file to guide your prompts. Here’s a real example I use:


"Write a blog post about [topic]. Use the tone and voice from this writing sample: [paste your favorite paragraph]. Keep sentences short. Make it blunt but helpful."

You can also say:


"Match this tone: direct, dry wit, clear authority. Avoid hype. Use plain language."

Want to dial it in even more? Tell ChatGPT what not to do:


"Avoid fluffy intros, salesy phrases, and long paragraphs. No emojis. No buzzwords."

Create a Repeatable Workflow


Stop starting from zero every time. Build a prompt template that includes:


  • A voice sample

  • A topic or format (email, blog, post)

  • Clear style rules (short sentences, avoid hype, etc.)


Then save it as a prompt in your favorite tool (I use SuperSmarts.ai).


Next time you write, plug in your new topic and go.


What to Do When It Still Sounds Off


Sometimes ChatGPT still flops. Here’s how to fix it fast:


  1. Shorten the output: Ask it to summarize or cut the word count.

  2. Change the format: Try "write it as bullet points" or "turn this into a script."

  3. Ask for alternatives: "Give me 3 variations with a more casual tone."

  4. Reinforce the voice: Paste your favorite paragraph again and say "match this exactly."


The more you correct it, the better it gets. Take your time, and continue to iterate.


Real Talk: AI Isn't Magic, But It Can Save You Hours


Most people give up on ChatGPT too early. It’s not bad at writing. It’s bad at reading your mind.


If you want outputs that feel like you, you have to teach it. That takes a little upfront work—but once it clicks, you’ll fly through content.


I've built whole content systems for clients using this method. You can do the same, starting today.


If you want to master your brand voice with ChatGPT, download this free guide on using AI for marketing without losing your tone.


See you next time! Or until the robots take over 🤖.

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