A site with hundreds of articles and a handful of loose categories is hard to browse. Creator Assistant Categories reads what your articles are about, groups the ones that deal with the same topic, names every group and turns the groups into a tree of categories.

Three levels: main categories, subcategories and a third level, each one more specific than the one above.
Every article goes into the most specific category it belongs to. The parent categories show the articles of their subcategories too.
A preview comes first: you see the tree, how many articles each category holds and the titles the name was taken from, and nothing changes on your site until you press “Apply categories”.
A new analysis keeps the categories whose topic did not change, even when they move to another place in the tree, and reuses categories with the same name instead of duplicating them.
After the tree is applied, the categories belong to the tree: every analyzed article has one topic, and the other categories are deleted, the ones you made by hand too. The preview lists them before anything changes. Protect a category, such as a “Featured” one your theme uses, to keep it and its articles.
After the tree is applied, a new article gets the category of the article most similar to it, without running the analysis again.
You decide how fine the tree is with three similarity thresholds and a minimum number of articles per category.

Requirements

Creator Assistant Hub 1.2.0 or higher, connected and with OpenAI and Qdrant configured. This plugin uses the clustering service and the article summaries published by the Hub since 1.2.0: update the Hub first, because WordPress cannot express a minimum version in Requires Plugins. With an older Hub the plugin stays idle and shows a notice. With Hub 1.4.0 or higher the categories are named with the Hub’s “reasoning” model profile; an older Hub keeps gpt-5.4-mini.
WordPress 6.8 or higher.
PHP 7.4 or higher.

Turning the plugin on also turns on the article summaries of the Hub, because the analysis works on them. Articles are analyzed once they have a summary, so on a large site wait for the Hub to process them before you start.

Part of the Creator Assistant family

Creator Assistant Hub connects your site to OpenAI and Qdrant (required).
Creator Assistant Search adds AI search to your site.
Creator Assistant Knowledge answers questions from private knowledge.

External services

This plugin uses the services configured in Creator Assistant Hub, and only after you accepted its terms there.

OpenAI: turning this plugin on also turns on a Hub feature that is off by default: the article summaries, which are generated with OpenAI (the Hub sends the text of your articles for that). To give a name to every group, the plugin also sends OpenAI the titles of the articles of the group, the names of the groups above it, the language of the site and, after the first application, the names of the categories it created with the titles of a few articles in each. Terms, privacy policy.
The Creator Assistant clustering service, run on Amazon Web Services by the plugin author: when you press “Analyze”, it receives the vectors of the summaries of your articles, with their post IDs, through the REST endpoint of the Hub, and groups them by similarity. It does not receive the text of your articles. Privacy policy, terms of service.