YakWP

Most site chatbots hallucinate because they never see your content. Yak runs RAG over your posts, pages and products, so every answer is grounded in what's actually on your WordPress site. It stores vectors locally in your own database and does semantic search — "how much does it cost" finds your pricing page even when the words don't match. Self-hosted, bring-your-own-key (Gemini, OpenAI, OpenCode Go, OpenRouter), free tier fully functional. WP 6.0+. https://yakwp.com/downloads/