ChatPDF vs OpenBrief

ChatPDF lets users summarize documents and ask questions about their contents using conversational AI. Answers include citations that point to references in a PDF, and users can organize files in folders or discuss multiple PDFs in one conversation. It accepts PDFs in any language and supports conversations in any language; listed file types also include Word, PowerPoint, Markdown and text. Sharing links can be created, with access permissions managed or revoked. ChatPDF says documents are encrypted during transfer and storage and can be deleted by the user. Queries are routed dynamically between GPT-4o and GPT-4o-mini. The service works in a browser on any device and is listed for Android, iOS, Linux, macOS and Windows. Its backend API accepts uploaded PDFs or public URLs and lets users query them to build custom PDF chatbots. The API documentation limits each PDF to 2,000 pages or 32 MB and describes the chat API as stateless. The Free plan costs nothing and allows two documents per day.

OpenBrief turns long videos, audio, and recordings into briefs with transcripts, summaries, source-grounded questions, and notes for export. It is intended for material such as research calls, lectures, product demos, interviews, and screen recordings. Add local files or supported web links to a library that keeps source details together. The app uses existing captions where available and transcribes when needed; transcript chat answers are tied to the transcript. Summaries, decisions, timestamps, and notes can be exported to Markdown. The desktop app runs on Linux, macOS, and Windows and does not require an account or sign-up. The homepage says files and generated notes stay on the user's device, and the download page says media processing runs locally. Optional API keys let users choose cloud AI providers: OpenAI, Anthropic, Gemini, or OpenRouter. Requirements include macOS 13, Windows 11, or a current Linux desktop, local disk space, and a local inference stack for transcription, voice generation, and voice cloning. The free plan costs nothing, with no paid plan or trial clock.