Answer engine that cites its sources for every claim.
Best for: Quick research with links you can check
- Price:
- Free plan; Pro $20/mo
- Works on:
- web
Free planBEGINNERHindiChecked yesterday
Block4Roots
Best AI tools to research and summarise
Updated 18 Oct 2026
Sources, papers, long PDFs
Top 3
Research & summarize
Upload PDFs and notes, then ask questions or get audio summaries.
Best for: Studying a stack of documents
- Price:
- Free plan; Google AI Plus $4.99/mo; Pro $19.99/mo
- Free limits:
- 100 notebooks; 50 sources each; 50 chats/day
- Works on:
- web, android, ios
Free planBEGINNERHindiChecked yesterday
Shows what research papers say about a yes/no question.
Best for: Checking if a claim is backed by science
- Price:
- Free plan; Pro $20/mo or $144/yr billed annually
- Works on:
- web, android
Free planBEGINNERChecked yesterday
Our picks are never paid. Some Visit links are affiliate links, which never change the order. How we earn
How we pick: overall quality for beginners, then the strongest free plan, then the gentlest learning curve.
Every tool, one wall
The tool rack
5 tools
Perplexity
Research
Answer engine that cites its sources for every claim.
Best for: Quick research with links you can check
Free planBEGINNERHindiChecked yesterday
NotebookLM
Research
Upload PDFs and notes, then ask questions or get audio summaries.
Best for: Studying a stack of documents
Free planBEGINNERHindiChecked yesterday
Consensus
Research
Shows what research papers say about a yes/no question.
Best for: Checking if a claim is backed by science
Free planBEGINNERChecked yesterday
Your tool here
Featured spot. Clearly labelled, never mixed into our Top 3 picks.
Elicit
Research
Finds and summarises academic papers.
Best for: Literature reviews and thesis work
Free planINTERMEDIATEChecked yesterday
Scite
Research
AI assistant answering research questions with evidence-checked citations.
Best for: Researchers checking citation quality
PaidADVANCEDChecked yesterday
Ready-made combos
Starter stacks
College project
Research to final presentation.
- 1PerplexityFree
Find sources
- 2NotebookLMFree
Summarise the PDFs
- 3Napkin AIFree
Turn notes into diagrams
- 4GammaFree
Build the slides
Common questions
Which tool should I try first?
Start with Perplexity. It is our best overall pick for beginners. Try it on one small task before spending money.
Can I start for free?
Yes. Perplexity, NotebookLM, Consensus have a free plan in our listing. Limits can change, so check the tool's site before signing up.
Do I need any experience?
No. Perplexity is marked Beginner. Start with a simple request and check the answer yourself.
Can I use these tools in Hindi?
Perplexity, NotebookLM work in Hindi. Try a short Hindi request before important work.
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