Yes, Grok can read PDFs: you can upload a PDF in any Grok chat and ask it to summarize the document, pull out tables or quotes, or answer questions about it.
As of November 15, 2026, according to the Grok FAQ and xAI developer documentation:
- How to upload: on the web, iOS or Android, tap the + icon next to the message box and pick the file, or drag and drop it on the web. You can attach several files in one message.
- Limits: most files, including documents, can be up to 150 MB each. The web app accepts up to about 100 files at once and Android up to 20.
- Long files: for PDFs over 100 pages, Grok focuses on the text and key visuals, so refer to specific page numbers or split very large documents.
- xAI API: developers can attach a PDF by public URL or uploaded file ID. The API then runs a document search tool automatically, billed per tool call plus tokens.
Related: What is the Grok file upload limit?, Can Grok read images? and Can Claude read PDFs?
Source: xAI Docs, Grok FAQ: Files and Data, xAI Docs, Files and xAI Docs, Chat with Files
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