At the WordPress Cambridge Meetup on 12th June 2023, Simon Bragg talked about several free and premium AI (Artificial Intelligence) plugins for WordPress.
This table lists up to 150 plugins, measured by total downloads, which contain the word AI. On 13th June there were just over 100 of them.
But there are more AI plugins than listed here; there are currently 8 pages of plugins tagged AI. List WordPress plugins tagged as AI
Total plugins: 60574