This episode is a hands-on tutorial on getting a general AI assistant to write in YOUR brand's voice instead of the bland corporate default that all the models drift toward. We separate two things marketers constantly conflate. Voice is the constant: your brand's personality in writing. Tone is the variable: how that voice flexes by context. The [Mailchimp Content Style Guide](https://styleguide.mailchimp.com/voice-and-tone/) is the public model here, with one voice and a tone that changes for a launch versus a billing error. For concrete coordinates, we use the [NN/g Four Dimensions of Tone of Voice](https://www.nngroup.com/articles/tone-of-voice-dimensions/) by Kate Moran: Funny vs Serious, Formal vs Casual, Respectful vs Irreverent, Enthusiastic vs Matter-of-fact, each a sliding scale you can hand the model as numbers. The core thesis: examples beat adjectives. [Few-shot prompting](https://learnprompting.org/docs/basics/few_shot) with three to five real samples, ideally generic-to-on-brand rewrite pairs, transfers your register far better than describing it. The keystone move is reverse-engineering: paste your best writing and have the model extract a reusable voice profile, then edit it by hand. We cover where to save that profile persistently across [ChatGPT Custom Instructions](https://help.openai.com/en/articles/8096356-chatgpt-custom-instructions), Claude Projects and custom Styles, and [Gemini Gems](https://gemini.google/overview/gems/), which all converge on the same shape: a saved container of persistent instructions plus reference files. A [comparison of the three](https://www.atomwriter.com/blog/custom-gpt-vs-claude-projects-brand-voice/) shows the asset matters more than the tool. Then the pitfall: the AI-slop voice. We give a copyable blacklist drawn from [Wikipedia's Signs of AI writing](https://en.wikipedia.org/wiki/Wikipedia:Signs_of_AI_writing), plus detection scans you can run in two minutes. We close on [temperature](https://www.ibm.com/think/topics/llm-temperature) and a complete workflow you can copy. AI-generated podcast by OCDevel.