# Markup AI

> Markup AI supplies enterprise content review software that checks human and AI writing against brand voice, terminology, style, quality, and compliance criteria. Built on Acrolinx’s language technology, its Content Guardian Agents work through authoring integrations, an API, and MCP connections.

- **Founded:** 2002
- **Headquarters:** New York, United States
- **Founders:** Andrew Bredenkamp (Acrolinx co-founder; former CEO), Sabine Lehmann (Acrolinx co-founder), Hans Uszkoreit (Acrolinx co-founder)
- **Products:** Content Guardian Agents, API and MCP integrations, Markup AI for ChatGPT, Enterprise content standards
- **Notable:** Built on Acrolinx’s more than two decades of enterprise language technology., Announced $27.5 million financing in September 2025., Publicly released API tools and a GitHub content-checking Action.

## Products & services

- **Content Guardian Agents** — Specialized checks for style, terminology, brand voice, clarity, risky claims, links, and AI-search readiness.
- **API and MCP integrations** — Content checks inside enterprise pipelines and AI assistants, with issue locations and suggested corrections.
- **Markup AI for ChatGPT** — Connector for reviewing drafts against configured company standards and applying accepted suggestions in the conversation.
- **Enterprise content standards** — Advanced Acrolinx-powered standards, custom review criteria, enterprise onboarding, SSO and SCIM.

## Achievements

- Built on Acrolinx’s more than two decades of enterprise language technology.
- Announced $27.5 million financing in September 2025.
- Publicly released API tools and a GitHub content-checking Action.

## Latest updates

- **2026-02** — Elana Anderson joined the board; Alisa Lessing was appointed strategic product advisor.
- **2026-09** — Published an explanation of the Acrolinx transition, retaining deterministic style checking alongside new agents.
- **2026-10** — Announced the Markup AI app in ChatGPT on October 1.

## Links

- Website: https://markup.ai/
- LinkedIn: https://www.linkedin.com/company/markupai
- Twitter/X: https://twitter.com/Acrolinx
- GitHub: https://github.com/markupai
- Facebook: https://www.facebook.com/pages/Acrolinx/127089923970436

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Profile page: https://yespress.io/markup-ai
Published by YesPress — https://yespress.io
Last updated: 2026-10-04