Smart Connections indexes a user’s Obsidian vault and uses embedding models to find notes that are semantically related to the current note or query. It ships with a local embedding model by default but also supports over 100 LLM APIs including Claude, Gemini, ChatGPT, and Llama 3 for embeddings and chat interactions. The plugin provides a Connections view to visualize related note links, helping users rediscover and link content that would otherwise remain buried in their vault.