Describing a tone of voice is hard; showing it is easy. Paste three to five real examples and the model copies the rhythm, length and attitude far more reliably than it follows adjectives like “playful but premium”.
Write a product description in our brand voice — playful but premium.
Here are three product descriptions in our brand voice, in <example> tags. Write a fourth, for our new pistachio cake, that matches their length, rhythm and attitude.
The prompt
Copy-ready prompt
Below are [3–5] examples of [CONTENT TYPE] in our brand voice. <examples> <example>[PASTE EXAMPLE 1]</example> <example>[PASTE EXAMPLE 2]</example> <example>[PASTE EXAMPLE 3]</example> </examples> Write a new one for [PRODUCT / TOPIC]. Match the length, sentence rhythm and attitude of the examples. Do not reuse their phrases.
Why it works
Anthropic calls examples “one of the most reliable ways to steer” format, tone and structure, and recommends 3–5 of them, wrapped in <example> tags and varied enough that the model does not copy one pattern. Google’s Gemini guide suggests 2–5, and OpenAI’s guide covers the same technique as few-shot learning.
Use it for
Captions, product descriptions, email subject lines, script voice-overs — anything where you already have a few pieces you are proud of. Pick examples that differ from each other, or you will get a copy of one.
Sources
- Anthropic — Claude prompting best practices — platform.claude.com (accessed 28 Sep 2026)
- Google — Prompt design strategies for the Gemini API (updated 17 Sep 2026) — ai.google.dev (accessed 28 Sep 2026)
- OpenAI — Prompt engineering guide — developers.openai.com (accessed 28 Sep 2026)
More tricks and templates in the Prompt Lab. Want this applied to your brand’s brief? Start a project.