The WP AI Client is the shared part of WordPress 7 that does the real work of talking to an AI provider — sending the request and handling the response — on behalf of any plugin that needs it. Without it, every plugin would write and maintain its own code for each provider's quirks. With it, a plugin asks the client to run an AI task and lets it handle the connection set up through AI Connectors. Here "client" means a piece of software that talks to a service, not a person you work for — the word trips people up. Of the three pieces — the Abilities API to declare what a plugin can do, the Connectors screen to hold the credentials, and the WP AI Client — this is the one that actually moves the data.
Glossary entry