ChatPDF
Free tierChat with any PDF using AI — summarize, ask questions, and extract insights instantly
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ChatPDF is a freemium document-intelligence platform that enables conversational querying of PDFs and other document formats (Word, PowerPoint, Markdown, plain text) via a chat interface powered by OpenAI models (GPT-4o and GPT-4o-mini). The backend dynamically routes requests between GPT-4o and GPT-4o-mini to balance response quality and latency. Responses include cited sources with clickable citations that deep-link directly into the source document. The platform supports multi-file chat sessions, allowing cross-document querying within a single conversation. Storage is SOC2 Type II certified with SSL encryption. A public API is available for developers looking to integrate ChatPDF's document-chat capabilities into their own applications. The free tier requires no account and allows up to 2 documents per day; the ChatPDF Plus plan unlocks unlimited document analysis and additional advanced features.