The Explain Selection With AI plugin integrates AI-powered text elaboration directly into Obsidian's editor context menu. By selecting a passage and invoking the plugin, users can leverage AI models such as OpenAI's GPT-3.5 or GPT-4 to provide explanations or elaborations on the selected text. The plugin supports multiple configurations, including OpenAI's API, Ollama for managing local language models, and custom local or remote AI setups for advanced users. This flexibility allows seamless integration of generative AI capabilities to enhance understanding and context within notes.