“Chat with any PDF document. Explore a variety of use cases to chat with PDF documents using the best ChatPDF app.

• How does it work? Getting started is easy! Simply sign up, upload a document, and start chatting with it. You can ask questions and chat with your documents using natural language. The underlying AI model will retrieve any relevant information from the document and give you a well-informed answer (with cited sources).
• You can only upload PDF (.pdf) files at the moment. However, we are working to support more file types in the future.
• Can PDF.ai speak languages other than English? Yes, PDF.ai can read PDFs in any language and answer questions. You can upload a PDF in one language and ask questions in another language. PDF.ai will give you answers in the language you use. What OpenAI model does PDF.ai use? We use gpt-3.5-turbo-16k for all paying customers. For freemium users, we use gpt-3.5-turbo (4K base model). The gpt-3.5-turbo-16k model offers four times the context length of the 4k base model.”