Revise (https://revise.io/) is an online word processor with built-in AI agent that edits documents directly in the browser.

DOCX, PDF, or Markdown files can be imported as-is, only texts are kept with styles, page breaks, and columns.

Based on a statement, the agent proposes changes that are displayed as suggestions to be accepted or rejected individually, similar to a change tracker.

Version history and collaborative editing offered.

Export to Word, PDF, HTML, md, txt.

Note: GPT 5.2 Luna and Claude Haiku 4.5 are available in free version.

Free with daily limit not specified. During the tests, 4 to 5 interactions in the chatbot per day.

For plain text, test from copy paste from https://www.uneiaparjour.fr/agent.md.
For the pdf import, test chapter 1 of https://www.reseau-canope.fr/ia-et-education/dossier-ia-generatives-en-education.