Vizura Studio
EN
EnglishHrvatskiDeutschNederlandsFrançaisEspañol
Book 15 minutes
Brand OS Portal

Brand rules for ChatGPT and Claude: how to set them for a team.

One short rules page, one owner and one place to keep it. Then every team member gets the same on-brand drafts.

Get Brand OS in your brand, freeTry it now

Free: your brand in 3 real designs, in 48 hours.

Write one short brand rules page: voice, words to avoid, approved facts and visual rules. Keep it in one place. Everyone loads the same page into ChatGPT or Claude before they write.

Give it one owner. Check it once a month. Without that, each person sets their own rules, and the brand drifts.

By Vedran Obradović · Updated 7 November 2026

The whole Brand OS Portal in two minutesFilm A. Sound on.
Hear me explain Social StudioA short video. I show it on a real brand.

Get Brand OS in your brand, free

Each person has their own prompt.

That is how a team goes off brand.

Sales has a prompt. Marketing has another. The CEO types it fresh each time. Each gets a slightly different voice. After a quarter, the company sounds like five people.

The fix is shared rules. Start from ChatGPT and Claude projects on brand for how to load them.

Voice Check in a Brand OS Portal checking team writing against brand voice
One shared voice, checked in the same way for everyone.

Copy this team rules template.

One page. Fill in the brackets. Keep it under a page.

Team brand rules for ChatGPT and Claude
BRAND RULES - [Company] - updated [date], owner: [name]

VOICE: [3 words]. Short sentences. Say I or we: [pick one].
WORDS WE USE: [list 8]
WORDS WE NEVER USE: [list 10]
FACTS YOU MAY QUOTE: [list, each with its source]
FACTS YOU MUST NOT INVENT: customer names, numbers, dates, awards.
VISUAL RULES: colours [codes], fonts [names], logo: use the supplied file.
BEFORE YOU ANSWER: say which rules you followed and flag any doubt.
SIGN-OFF: [how emails and posts end]

For a longer guide, see how to make ChatGPT use your brand voice and Claude brand guidelines.

Free tool

What does AI say about your brand?

See how an AI tool describes your company today. It is free and runs right here.

Open the full tool: AI Mirror

Who owns what.

Three jobs, even in a small team.

Owner

Keeps the page

One person edits the rules. Changes are dated.

Team

Uses the page

Loads the same rules every time. Does not edit them.

Checker

Spot checks

Reads 5 drafts a month against the rules and reports gaps.

Read more on who decides in brand governance for startups.

Brand OS Portal

Get 3 templates in your brand. Free.

Leave your email. I design them by hand and send them to you within 48 hours. It costs you nothing.

Rules for words are not enough.

AI tools write the words. The design still needs a home.

ChatGPT and Claude can follow voice rules. Layouts, logo and photos are harder to hold. In a Brand OS Portal, the team makes posts from ready designs, and AI Kit gives ChatGPT and Claude the same brand rules. Voice Check looks at the words and Image Grader at the photos.

Deepsea Networks brand, main image

Deepsea Networks

Brand OS Core Portal. The CEO writes and designs an on-brand LinkedIn post in about 3 minutes.

MTG brand, main image

MTG

Brand OS Pro Portal. The team makes its own posts. No waiting.

A designer is still right for the identity. The portal handles the daily work. See Brand OS Portal.

Is your team set up?

Tick what is true.

0 of 6 done

New hires: see brand onboarding for new hires.

Social Studio

Try one Brand OS Portal tool

See an on-brand post in seconds.

This is a real tool from a real Brand OS Portal, on the MTG brand. Change the words and the photo. The design stays on brand.

Watch

Watch me show every tool.

I made short videos of the tools. Hear me explain them, then scroll through every one at work. Real tools, on a real brand.

Hear me explain

Social StudioPick a design, change the words, download.
Motion PostsType one line, get a video.
Sales docs and decksDocs and decks in your brand, this week.
Email signaturesYour brand in every email.
Voice CheckCheck words against your voice.

Every tool at work

Social StudioPosts people stop to read. Change the words, keep the look.
Motion PostsType one line. Get a video.
Logo StudioThe right logo, any size, any colour, any file.
Pattern LabPatterns drawn from your own logo.
Pitch deck made in Brand OS Portal for MTG
Pitch Deck BuilderTell it your story. Get the slides in your brand. This deck was made for MTG.
Campaign BuilderPlan a campaign in your brand.
Print docsDocuments that look like you.
Image GraderCheck photos against your brand.
Voice CheckCheck your words against your voice.
Signature BuilderYour brand in every email.
AI to templateBring an AI result into your brand look.

See yours for free

Brand OS Portal

Try more Brand OS Portal tools.

Logo Studio, Motion Posts, Pattern Lab, Social Studio and LinkedIn banners. Real tools on a real brand. No email needed.

Try more Brand OS Portal tools

Straight answers.

How do I give my team the same ChatGPT brand rules?

Write one rules page and have everyone load it before they write. Keep one owner.

Can Claude and ChatGPT share the same brand rules?

Yes. Plain written rules work in both.

How long should the rules be?

About one page. Longer rules get skipped.

Who should own the brand rules?

One person, often the marketing lead or the founder.

How do I check AI drafts follow the rules?

Ask the AI to list the rules it followed, then spot check a few each month.

Read next.

How to keep ChatGPT Projects and Claude Projects on brand.

How to make ChatGPT use your brand voice.

Brand governance for startups: a simple version.

One more thing.

Death List Five. Five headaches, one portal. Sound on.

Film B. Made for your phone.

Get Brand OS in your brand, free

Does AI get your brand right? Check it free.

See what ChatGPT says about your company, and how to fix it.

Check it freeBook 15 minutes

Rather write to me?