Freemium
SciSummary
AI summaries of scientific papers
AI ReadingResearch
ALTERNATIVES
Best PDF.ai alternatives
AI tools that cover similar ground to PDF.ai, sorted by relevance. Use the table for a quick pricing and category check, then click through for details.
Updated 2026-10-22
| Tool | Pricing | Categories | Best for |
|---|---|---|---|
| SciSummary | Freemium | AI Reading / Research | AI summaries of scientific papers |
| Humata | Freemium | AI Reading / Document AI | Chat with any PDF document |
| Unriddle | Freemium | AI Reading / Research | Research copilot for reading papers faster |
| AskYourPDF | Freemium | AI Reading / Document AI | Popular PDF chat with plugin support |
| 金山文档 | Freemium | Collaboration / Document AI | WPS's online docs for real-time collaboration |
| TextIn | Freemium | Document AI / AI APIs | ScanKing maker's document parsing and OCR APIs |
| Mathpix | Freemium | Document AI / Research | Snaps equations and PDFs into LaTeX and Word |
| 万兴 PDF | Paid | Document AI / Productivity | Wondershare's PDF editor with AI assistant |
How we picked these alternatives
We only include tools that share at least one category with PDF.ai. Ordering is relevance-based, not paid: featured tools first, then the rest of the category.
Freemium
Humata
Chat with any PDF document
AI ReadingDocument AI
Freemium
Unriddle
Research copilot for reading papers faster
AI ReadingResearch
Freemium
AskYourPDF
Popular PDF chat with plugin support
AI ReadingDocument AI
Freemium
金山文档
WPS's online docs for real-time collaboration
CollaborationDocument AI
Freemium
TextIn
ScanKing maker's document parsing and OCR APIs
Document AIAI APIs
Freemium
Mathpix
Snaps equations and PDFs into LaTeX and Word
Document AIResearch
Paid
万兴 PDF
Wondershare's PDF editor with AI assistant
Document AIProductivity
Freemium
扫描全能王
The go-to mobile scanner with AI enhancement
Document AIProductivity
Paid
Nanonets
AI OCR that extracts data from documents at scale
Document AIData Analytics
Free
PDFgear
Free PDF editor with ChatGPT-powered chatbot
Document AIAI Reading
Freemium
iLovePDF
Free PDF tools for merge, split, convert and more
Document AIProductivity
Free
PDF24 Tools
Completely free PDF toolbox online and offline
Document AI
Freemium
Mapify
Turns web pages, videos and PDFs into mind maps
Mind MappingAI Reading
Freemium
Speechify
Turns any text into natural audio you can listen to anywhere
Text to SpeechAI Reading
Freemium
NaturalReader
Veteran text-to-speech reader with natural-sounding voices
Text to SpeechAI Reading
Paid
达观数据
Text intelligence meets RPA for document-heavy office work
Digital EmployeesDocument AI
Freemium
Smallpdf
All-in-one PDF toolkit with AI features
Document AIProductivity