Teaching AI to speak your brand language involves training models with tone, style, and vocabulary that reflect your brand’s identity. This ensures consistency across all customer touchpoints, from ads to emails.

HubSpot contributor Erin Pennings has published an article featuring useful strategies to get AI to write copy in your brand voice.

She says, “For starters, I don’t believe that there is a single “best” AI platform for copywriting. It really comes down to personal preference.

ChatGPT was the clear winner among the people I spoke with for this article, with Claude and DeepSeek close behind.

If you’re already using HubSpot, Breeze AI and AI Content Assistant now includes brand voice capabilities too. The tool can help your team stay consistent across emails, blogs, and landing pages directly inside your marketing workflows.

Personally, I prefer ChatGPT. It’s where I’ve spent the most time, I’m comfortable with the platform, and most importantly, I know how to engineer prompts and give feedback that gets good results. Plus, since I’m already paying for it, it makes sense to focus there.”

How to get AI to write copy in your brand voice — from picking the right platform to training your GPT

HubSpot

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