ChatPDF alternatives

Closest first: ordered by how many of ChatPDF's tasks each tool shares, then by popularity.

1. 1

   HumataVerifiedFree tier · from $9.99/mo

   Lets researchers, students, and teams ask questions across their PDFs and get answers with citations.

   Also does:Asking questions about your documentsChatting with PDFsSummarizing long text

   Web

2. 2N

   NotebookLMFree tier · from $9.99/mo

   Google's AI notebook that grounds every answer in your uploaded documents, PDFs and audio files with source citations.

   Also does:Summarizing long textChatting with PDFsStudying with an AI tutor

   Web · iOS · Android

3. 3

   ElicitVerifiedFree tier · from $11/mo

   AI research assistant that finds academic papers and drafts cited reports for researchers.

   Also does:Summarizing long textAsking questions about your documents

   Web

4. 4

   Microsoft CopilotVerifiedFree tier · from $9.99/mo

   An AI assistant for everyday and work tasks, with chat, search, drafting and image creation.

   Also does:Summarizing long textStudying with an AI tutor

   Web · Windows · Mac · iOS · Android

5. 5

   KhanmigoVerifiedFree tier · from $4/mo

   An AI tutor and teaching assistant from Khan Academy for students, teachers, and parents.

   Also does:Studying with an AI tutorSummarizing long text

6. 6S

   SciSpacePaid

   An AI tool for reading research papers with inline concept explanations, full-paper Q&A and related literature discovery.

   Also does:Chatting with PDFsSummarizing long text

   Web · Browser extension

7. 7

   ShortwaveVerifiedFree trial · from $30/mo

   An AI email assistant for teams and professionals that organizes inboxes, drafts replies, and schedules meetings.

   Also does:Summarizing long textAsking questions about your documents

   iOS · Android · Mac · Windows

8. 8C

   ClaudeFree tier · from $20/mo

   Anthropic's AI assistant with a long context window, nuanced reasoning and strong performance on writing and analysis.

   Also does:Chatting with PDFs

   Web · iOS · Android · API

9. 9P

   PerplexityFree tier

   An AI search assistant that answers questions with cited web sources and supports multi-step deep research reports.

   Also does:Summarizing long text

   Web · iOS · Android · Browser extension

10. 10

    DeepLVerifiedFree tier

    DeepL translates text, documents, and speech for people and teams working across languages.

    Web · Windows

11. 11Q

    QuillBotFree tier

    Paraphrasing and writing tool that rewrites text in several modes with grammar checking built in.

    Also does:Summarizing long text

    Web · Browser extension

12. 12

    NotionVerifiedFree tier · from $10/mo

    A connected workspace for team notes, projects, and knowledge, with AI and agents built in.

    Also does:Asking questions about your documents

    API

13. 13

    ZapierVerifiedFree tier · from $19.99/mo

    Automation platform that connects apps and AI tools so teams can run and govern workflows.

    Also does:Building chatbots for your website

    API

14. 14

    Otter.aiVerifiedFree tier · from $16/mo

    Records, transcribes and summarizes meetings for individuals and teams, then answers questions about them.

    Also does:Summarizing long text

    Mac · Windows · iOS · Android

15. 15K

    KimiFree tier

    Long-context assistant that reads huge documents.

    Also does:Chatting with PDFs