xAI's Grok has introduced a new feature allowing users to upload PDF files for analysis. This update, which includes a file size limit of 5MB, enables Grok to extract insights and answer queries from PDF documents. The feature is part of a series of recent upgrades to Grok, which also includes long context understanding, image understanding, web search results, inline citations to sources, and Grok Analysis. Users have expressed trust in Grok for handling personal files over other AI platforms like ChatGPT. The 5MB limit is expected to be increased soon. The Grok Attachments feature is also now live, marking a game-changer for document interaction.