ChatPDF vs NoteVox

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.

NoteVox is a web service that turns audio and video into transcripts, summaries and reusable content. Users upload files or paste direct URLs; supported formats are MP3, WAV, M4A, OGG, FLAC, WebM, MP4 and MOV, with Free uploads limited to 50MB. One upload can produce a full transcript, short and detailed summaries, key takeaways, chapter breakdowns, show notes, a blog draft, social post and title suggestions. The service supports more than 50 languages, with accuracy varying by language. NoteVox says it uses OpenAI Whisper for transcription and GPT-4 for generated content. Free results can be copied or downloaded as text; Pro adds SRT and VTT exports, larger files and other listed outputs. Free use requires no account or email. Audio is processed in memory and sent to OpenAI, then discarded unless explicitly saved. Pro costs $4.99 a month.