Brand voice is the filter, not a finishing touch
Brand voice keeps AI-assisted campaign copy recognisable by giving every draft a clear character, mood and point of view to work from. Good grammar and fast production are not proof of brand alignment. AI can help with research, ideas, spelling checks and early wording, but it can also reach for familiar phrases and predictable structures that flatten distinctiveness.
Start with the parts of the brand that cannot be swapped for another company's: the audience insight, the commercial point, the personality, the language to use and the language to avoid. Then give the draft a human test. Does the copy sound like someone real would say it? Does it have a clear point of view? Does it use language with rhythm, colour and intent rather than polished-but-generic filler? A brand voice is what turns useful information into communication people recognise and remember.
Sources: How a coffee chain helped me make peace with AI, The Prompt: Why brand matters more than ever in an AI world, The Prompt: AI; didn’t read. Why audiences are craving personality