Brand voice template for AI startups

Most startups describe their voice with vague adjectives like innovative, friendly, and professional. That is not a voice system. This template forces you to define concrete rules that AI and humans can actually follow.

Brand personality in 5 rules

• Rule 1: We sound like _____ (concrete reference, not adjective).
• Rule 2: We never sound like _____ (anti-reference).
• Rule 3: Our default sentence length is _____ (short/medium/long).
• Rule 4: We use jargon when _____ and avoid it when _____.
• Rule 5: Our content always includes _____ (proof, example, CTA, etc.).

Voice across channels

• Blog: educational, deeper, backed by evidence. Longer sentences are OK.
• LinkedIn: structured, professional, focused on insights and frameworks.
• X / Twitter: sharper, faster, opinionated. One idea per post.
• Product UI: clear, minimal, action-oriented. No marketing fluff.
• Sales materials: confident, specific about outcomes, backed by data.

Words we use and words we avoid

• We say: system, process, workflow, practical, concrete, evidence
• We avoid: revolutionary, game-changer, cutting-edge, synergy, leverage
• We describe features as: what they do, not what they are
• We talk about outcomes, not capabilities

Good output vs. bad output examples

• Good: 'This workflow reduces content production time from 5 days to 2.'
• Bad: 'Our revolutionary AI platform leverages cutting-edge technology to transform your content.'
• Good: 'Here is how to set up brand context in 10 minutes.'
• Bad: 'Unlock the power of AI-driven brand synergies with our innovative solution.'

Context for AI generation

• Feed this document to any AI tool before generating content.
• Include 3-5 examples of approved content as reference.
• Specify which voice channel the content is for (blog, social, product).
• After generation, check output against the 5 rules above.