Best AI PDF Assistants in 2026
Updated
AI PDF assistants help you ask questions about documents and work with the answers. Compare maximum file size and maximum PDF pages with scanned PDF support and the ability to handle multiple PDFs in one chat. Source citations can help you trace answers back to documents; export formats and access platforms matter for getting results into your workflow. Check free plan availability and paid-from pricing alongside those limits. AskYourPDF, docAnalyzer, and PDF.chat are options to compare with the PDFs you handle and the outputs you need. Consider whether your work depends on large or scanned files, multiple documents at once, or citations you can refer back to.
AI PDF Assistants, one module each. A lit port is something its maker publishes; 10 of the 25 on this page have a public API.
- 01 AskYourPDF API yesOSS not on recordFREE yesDOCS 7.4$1/mo
- 02 docAnalyzer API yesOSS not on recordFREE yesDOCS 7.4$8/mo
- 03 PDF.chat API yesOSS not on recordFREE yesDOCS 7.4$5/mo
- 04 ChatDOC API yesOSS not on recordFREE yesDOCS 7.3$7.49/mo
- 05 Humata API yesOSS not on recordFREE yesDOCS 7.3$49/mo
- 06 PDF.ai API API yesOSS not on recordFREE yesDOCS 7.3$599/mo
- 07 ChatPDF API yesOSS not on recordFREE yesDOCS 7.2Free
- 08 PDF-ChatGPT API yesOSS not on recordFREE not on recordDOCS 7.0
- 09 PDF-GPT API yesOSS not on recordFREE not on recordDOCS 6.8
- 10 PDFpal API yesOSS not on recordFREE not on recordDOCS 6.8
- 11 Anara API not on recordOSS not on recordFREE yesDOCS 6.0$1.67/mo
- 12 Paperpal API not on recordOSS not on recordFREE yesDOCS 6.0$12/mo
- 13 pdfAssistant.ai API not on recordOSS not on recordFREE yesDOCS 6.0$3.50/mo
- 14 Audeus API not on recordOSS not on recordFREE yesDOCS 5.9$9.92/mo
- 15 DeepPDF API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 16 DeinPDF API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 17 Doxy API not on recordOSS not on recordFREE yesDOCS 5.9$4.99/mo
- 18 Explainpaper API not on recordOSS not on recordFREE yesDOCS 5.9$16/mo
- 19 PaperDraft API not on recordOSS not on recordFREE yesDOCS 5.9£12.50/mo
- 20 PDFtoChat API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 21 ResearchPal AI Paraphraser API not on recordOSS not on recordFREE yesDOCS 5.9$0.69/mo
- 22 Sharly AI API not on recordOSS not on recordFREE yesDOCS 5.9$2/mo
- 23 Chonvy API not on recordOSS not on recordFREE yesDOCS 5.8Free
- 24 PDFCite API not on recordOSS not on recordFREE yesDOCS 5.8Free
- 25 Regeste API not on recordOSS not on recordFREE yesDOCS 5.8Free
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Maximum file size | Maximum PDF pages |
|---|---|---|---|---|---|---|---|---|
| 1 | AskYourPDF | 7.4 | Free plan | $1/mo | Yes | 11.99 /mo | — | — |
| 2 | docAnalyzer | 7.4 | Free plan | $8/mo | Yes | 8 /mo | 50 MB | — |
| 3 | PDF.chat | 7.4 | Free plan | $5/mo | Yes | 5 /mo | — | — |
| 4 | ChatDOC | 7.3 | Free plan | $7.49/mo | Yes | 8.99 /mo | — | — |
| 5 | Humata | 7.3 | Free plan | $49/mo | Yes | — | — | — |
| 6 | PDF.ai API | 7.3 | Free plan | $599/mo | Yes | 49 /mo | — | — |
| 7 | ChatPDF | 7.2 | Free plan | Free | Yes | — | — | — |
| 8 | PDF-ChatGPT | 7.0 | No | — | — | — | 25 MB | — |
| 9 | PDF-GPT | 6.8 | No | — | — | — | — | — |
| 10 | PDFpal | 6.8 | No | — | — | — | — | — |
| 11 | Anara | 6.0 | Free plan | $1.67/mo | Yes | — | 100 MB | 600 pages |
| 12 | Paperpal | 6.0 | Free plan | $12/mo | Yes | — | — | — |
| 13 | pdfAssistant.ai | 6.0 | Free plan | $3.50/mo | Yes | 9.99 /mo | — | — |
| 14 | Audeus | 5.9 | Free plan | $9.92/mo | Yes | 9.92 /mo | — | — |
| 15 | DeepPDF | 5.9 | Free plan | Free | Yes | — | — | — |
| 16 | DeinPDF | 5.9 | Free plan | Free | No | — | — | — |
| 17 | Doxy | 5.9 | Free plan | $4.99/mo | Yes | 4.99 /mo | 50 MB | — |
| 18 | Explainpaper | 5.9 | Free plan | $16/mo | Yes | — | — | — |
| 19 | PaperDraft | 5.9 | Free plan | £12.50/mo | Yes | — | — | — |
| 20 | PDFtoChat | 5.9 | Free plan | Free | Yes | — | — | — |
| 21 | ResearchPal AI Paraphraser | 5.9 | Free plan | $0.69/mo | Yes | 8.25 /mo | — | — |
| 22 | Sharly AI | 5.9 | Free plan | $2/mo | Yes | — | — | — |
| 23 | Chonvy | 5.8 | Free plan | Free | Yes | — | — | — |
| 24 | PDFCite | 5.8 | Free plan | Free | Yes | — | — | — |
| 25 | Regeste | 5.8 | Free plan | Free | Yes | — | — | — |
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Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.