PDF-ChatGPT

At a glance

• Editor score
  7.0 / 10
• Pricing
  Open source
• Best for
  Developers wanting open-source multi-PDF chat
• Paid from
  Free
• Multiple PDFs per chat
  Yes
• Facts checked
  20 Sep 2026

• Where it wins

  • Indexes multiple PDFs with semantic retrieval and page citations
  • Supports web, Windows, macOS, Linux, and API access
  • Keeps conversation history with follow-up memory and streaming answers

• Where it doesn't

  • Scanned PDFs are not supported
  • Default configuration requires a separately billed OpenAI API account
  • Running it requires a Python application or platform deployment

Our verdict on PDF-ChatGPT

PDF-ChatGPT is an open-source, self-hosted application for asking natural-language questions across one or more PDF documents. It is aimed at individuals and small teams, especially developers who can run a Python application locally or deploy it to a platform service. The workflow combines per-page text extraction with embeddings and FAISS-based semantic retrieval, then returns Markdown answers with citations tied to document pages. A document library shows page and chunk counts, while conversation history supports follow-up questions.

Setup is best suited to teams comfortable with a developer-oriented deployment model rather than buyers looking for a hosted, ready-to-run workspace. The application uses FastAPI, LangChain, FAISS, and OpenAI models, and its default configuration requires a separately billed OpenAI API account. Its MIT license supports self-hosted use, while access spans web, Windows, macOS, Linux, and an API. Streaming responses over Server-Sent Events, Markdown rendering, syntax highlighting, dark mode, and a responsive interface round out the application experience.

The standout capability is focused multi-PDF retrieval with page-level citations. Users can upload and index multiple documents, inspect library counts, ask questions in natural language, and continue the conversation with memory. That focus also defines the product’s limits: scanned PDFs are not supported, and the project is centered on document questioning rather than export workflows or a broader content platform. Choose PDF-ChatGPT when open-source control, multiple-document indexing, and cited answers matter. Choose an alternative when scanned-document handling, a managed service, or a less technical setup is the priority.

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PDF-ChatGPT pricing

PDF-ChatGPT fact sheet

PDF-ChatGPT integrations

PDF-ChatGPT lists 3 integrations on its own site.

• OpenAI
• LangChain
• FAISS

Alternatives to PDF-ChatGPT

• AI PDF ReaderA low-cost, local-first PDF assistant for private analysis across Windows, macOS, and iOS.9.4
• AnaraA citation-focused AI research workspace with broad connectors and multi-document analysis.9.2
• docAnalyzerA citation-rich document workspace with OCR, workflows, APIs, and broad exports.9.1

See all PDF-ChatGPT alternatives →

Featured on iTechGuides

PDF-ChatGPT is listed in our AI PDF Assistants directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update