# How to Train AI Models on Your Brand Voice and Tone
In the fast-paced Australian digital landscape, consistency is king. If your AI-generated content sounds like a robotic American textbook while your business is a friendly, laid-back Brisbane boutique, your customers will sense the disconnect immediately. Training an AI model on your specific brand voice ensures that every email, blog post, and social caption sounds authentically like you, saving you hours of manual editing.
By the end of this guide, you will have a "Brand DNA" prompt that you can use with tools like ChatGPT, Claude, or Gemini to ensure your output is always on-brand and ready for your local audience.
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What You’ll Need
- Existing Content Samples: At least 5–10 examples of your best writing (blogs, emails, or social posts).
- A Paid AI Account: While free versions work, ChatGPT Plus (GPT-4) or Claude Pro offer better memory and reasoning for brand training.
- Your Brand Values: A few bullet points on what your business stands for.
- 30-45 Minutes: To refine and test the output.
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Step 1: Gather Your "Gold Standard" Content
Before opening an AI tool, collect your best work. Look for content where you feel your brand personality really shines.
What to look for:- A high-performing email newsletter.
- A "hero" blog post that received great engagement.
- Your "About Us" page that explains your story.
- Captions from your most popular Instagram or Facebook posts.
Step 2: Define Your Personality Traits
Think of your brand as a person. If your business walked into a coffee shop in South Bank, how would it speak? Choose 3–5 adjectives.
- Example A: Professional, authoritative, yet empathetic.
- Example B: Cheeky, energetic, and uses occasional Aussie slang.
- Example C: Minimalist, sophisticated, and direct.
Step 3: Set the Scene with a System Prompt
Open your AI tool of choice. Do not just paste your text. You need to give the AI a role.
Type this into the chat:"I want you to act as an expert Brand Strategist and Copywriter. Your goal is to analyse a set of text samples to identify a specific Brand Voice, Tone, and Style Guide so you can replicate it in future tasks. Do you understand?"
Step 4: Feed the AI Your Samples
Provide your content in one go. Use the following format:
"Here are several samples of our brand's writing. Please analyse them for sentence structure, vocabulary, use of humour, punctuation habits, and emotional resonance."
[Paste your samples here, separated by lines like ---]
Step 5: Ask for a "Voice Profile" Analysis
Once the AI has processed the text, ask it to describe what it found. This is a crucial step to ensure the AI actually "gets" you.
Ask: "Based on these samples, describe our brand voice in detail. Include our typical sentence length, our stance on emojis, and how we address our audience."Step 6: Refine the Analysis (The "Australianise" Step)
Review the AI’s description. If it suggests you sound "American" or uses words like "trash" instead of "rubbish," or "sidewalk" instead of "footpath," correct it now.
Say: "That’s close, but remember we are an Australian business. Use Australian English spelling (e.g., 'organise' not 'organize'). We want to sound helpful but never arrogant. Please adjust the profile."Step 7: Create Your "Negative Constraints"
Knowing what not to say is just as important as knowing what to say. Tell the AI which words or phrases are banned.
Common 'Banned' AI Words:- Delve, Unveil, Unleash, Tapestry, In today's digital landscape, Game-changer.
Step 8: Test with a Small Task
Now, put the training to the test. Ask for a simple piece of content.
Prompt: "Using the brand voice you just defined, write a 3-sentence Facebook post announcing that our Brisbane office is closed for the Ekka public holiday."Step 9: Use the "Critique and Correct" Method
If the output isn't perfect, don't give up. Tell the AI exactly what was wrong.
Example: "That was too formal. Make it sound more like a quick update to a friend. Remove the exclamation marks."Step 10: Document the Final "Master Prompt"
Once you are happy, ask the AI to summarise everything into a single "Brand DNA" prompt.
Ask: "Please create a single, comprehensive paragraph that I can paste into any new chat to instantly teach an AI our brand voice, tone, and formatting rules."Step 11: Save as a "Custom Instruction"
If you use ChatGPT, you don't have to do this every time.
- Click your name (bottom left).
- Select Customise ChatGPT.
- Paste your Brand DNA into the "How would you like ChatGPT to respond?" box.
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Common Mistakes to Avoid
- Mistake 1: Feeding it too much junk. If you include bad writing samples, the AI will produce bad content. Only use your best work.
- Mistake 2: Being too vague. "Sound professional" means different things to a lawyer and a plumber. Be specific (e.g., "Sound like a trusted advisor who explains things simply").
Troubleshooting
- The AI sounds too 'cheesy': Tell it to "Reduce the use of adjectives by 50%" and "Stop using exclamation marks."
- The AI keeps forgetting the rules: This happens in long conversations. Every 10-15 messages, re-paste your Brand DNA prompt to "refresh" its memory.
- It uses Americanisms: Remind it: "Use Australian English spelling and local terminology."
Next Steps
Now that your AI is trained on your voice, you can use it to speed up your marketing workflow without losing your soul. Why not try using your new Brand DNA to rewrite your website service pages or draft your next month of social media posts?
If you find the technical side of AI prompt engineering a bit overwhelming, the team at Local Marketing Group can help you build custom AI workflows tailored specifically for your Brisbane business. Contact us today to see how we can automate your marketing while keeping it authentic.