Key points
- Document 5-10 words your brand is and isn't (e.g., 'direct, not formal').
- Include 2-3 real example passages of on-voice writing for the AI tool or writer to reference.
- Update the guide quarterly as you learn what AI drafts consistently get wrong.
A written brand voice guide is the single most effective tool for keeping AI-assisted content consistent and on-brand across a team.
What this means for you
Document 5-10 words your brand is and isn't (e.g., 'direct, not formal'). Understanding this distinction is the foundation for evaluating any specific tool's marketing claims — see our full humanizer comparison table for how individual tools stack up.
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