Markup AI
Checks drafts against your organization's brand voice, terms, style guide and claim rules, with suggested fixes.
What Markup AI can do in ChatGPT
Check drafts against your team's content rules.
Brand Voice Check
Spot where a draft drifts from your brand voice.
Terms And Style
Find unapproved words and style guide breaks.
Claim Review
Flag risky claims and places that need a source.
Readability Check
Point out hard sentences and machine-sounding phrasing.
Suggested Fixes
Get the location, reason and a fix for each issue.
You stay in control
You approve access, and you can disconnect Markup AI at any time.
Apps 1
What Markup AI does in ChatGPT
The Markup AI plugin reviews your drafts against the quality checks your organization has set up, all in one go. It looks for drift from your brand voice, words that are not approved, style guide breaks, hard-to-read sentences, phrasing that sounds machine-written, risky or unsupported claims, missing sources, and how ready the content is for AI search.
You share content in ChatGPT and can say what you want it to achieve. You get back the list of checks that ran, any warnings about setup, and each flagged issue with where it is, why it was flagged and a suggested fix.
Teams can also run a named set of checks with a chosen persona, brand voice profile, style guide or content profile, and list which checks and setups their organization has available. That is useful when different teams follow different rules.
Who it is for
- Content and marketing teams
- Editors enforcing a style guide
- Brand and compliance reviewers
How to add Markup AI to ChatGPT
- Open the Markup AI listing in ChatGPT ↗.
- Click Install plugin.
- Sign in to your Markup AI account when asked and approve the access it requests.
- Start a chat and ask for what you need, mentioning Markup AI if ChatGPT does not pick it up.
- To stop, disconnect Markup AI under apps in your ChatGPT settings.
Questions about Markup AI
What is the Markup AI ChatGPT plugin?
The Markup AI plugin reviews your drafts against the quality checks your organization has set up, all in one go. It looks for drift from your brand voice, words that are not approved, style guide breaks, hard-to-read sentences, phrasing that sounds machine-written, risky or unsupported claims, missing sources, and how ready the content is for AI search. It is listed in ChatGPT's plugin marketplace under Productivity.
What can I ask Markup AI to do in ChatGPT?
For example: "Check this blog post against our brand voice and style guide", "Find any unapproved terms in this product page", "Flag unsupported claims or missing sources in this press release".
Who makes the Markup AI plugin for ChatGPT?
The ChatGPT listing names Markup AI as the developer. The version listed on 8 October 2026 was 1.0.0.
How do I add Markup AI to ChatGPT?
Open the Markup AI listing in ChatGPT, click Install plugin, sign in to your Markup AI account and approve the access it asks for. Then ask for what you need in a chat, mentioning Markup AI if ChatGPT does not pick it up.
Can Markup AI change things in my account, or only read?
It reads the content you share and runs it through your organization's configured checks in Markup AI, returning flagged issues and suggested fixes.
Who is the Markup AI plugin for?
Content and marketing teams, editors enforcing a style guide and brand and compliance reviewers.
What does Markup AI check for?
Brand voice drift, unapproved terms, style guide breaks, hard-to-read sentences, AI-sounding phrasing, risky or unsupported claims, missing sources and AI-search readiness, depending on what your organization has set up.
Does Markup AI tell me where each problem is?
Yes. Each flagged issue comes with its location, an explanation and a suggested correction.
Can I choose which checks Markup AI runs?
Yes. You can run a named set of checks with a chosen persona, brand voice, style guide or content profile.
Does Markup AI see my ChatGPT chats?
When Markup AI is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Markup AI. What Markup AI does with that data falls under its own terms and privacy policy. ChatGPT keeps your training-data settings, and you can disconnect at any time.
How do I disconnect Markup AI from ChatGPT?
Open your ChatGPT settings, go to apps, and disconnect Markup AI. You can reconnect later from the listing.
What are alternatives to Markup AI in ChatGPT?
Similar plugins in the ChatGPT marketplace include Sunate, A Seat Awaits and A.I. Slides by Brightdeck. Each has its own page in this directory.
Privacy and your data
When Markup AI is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Markup AI. What Markup AI then does with that data falls under its own terms and privacy policy, not only OpenAI's. ChatGPT keeps your training-data settings for data that comes from connected apps, and you can disconnect at any time.
Markup AI privacy policy ↗Markup AI terms ↗OpenAI: apps in ChatGPT ↗