A prototype is available, though it’s Chrome-only and English-only at the moment. How this’ll work is you select some text and then click on the extension, which will try to “return the relevant quote and inference for the user, along with links to article and quality signals”.
How this works is it uses ChatGPT to generate a search query, utilizes WP’s search API to search for relevant article text, and then uses ChatGPT to extract the relevant part.
This looks less like the LLM is making a claim so much as using an LLM to generate a search query and then read through the results in order to find anything that might relate to the section being searched.
It leans into the things LLMs are pretty good at (summarizing natural language; constructing queries according to a given pattern; checking through text for content that matches semantically instead of literally) and links directly to a source instead of leaning on the thing that LLMs only pretend to be good at (synthesizing answers).