Best AI Research Tools

Answer engines and literature-review assistants that cite their sources.

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Not sure which one is for you? Take the 30-second quiz and get a personal top 3.

1. NotebookLM Free

Google's free research notebook: upload sources, get grounded answers and audio overviews.

✓ Free and excellent
✓ Answers grounded in YOUR documents
✓ Audio overview podcasts

✗ Source-locked (no open web)
✗ Google account required

Try NotebookLM →

2. Consensus Free tier · paid from €9/mo

Search engine over scientific papers that tells you what the evidence says.

✓ Evidence meter across studies
✓ Simple for non-academics
✓ Cheap

✗ Coverage gaps outside medicine/social science
✗ Shallow for deep dives

Try Consensus →

3. Elicit Free tier · paid from €12/mo

AI research assistant that finds and summarizes academic papers into tables.

✓ Purpose-built for literature review
✓ Extracts data across papers
✓ Trusted in academia

✗ Academic focus only
✗ Free tier is limited

Try Elicit →

4. Scite from €18/mo

Citation analysis that shows whether papers support or contrast a claim.

✓ Unique supporting/contrasting citation data
✓ Good for rigorous lit review

✗ Niche academic tool
✗ Dated interface

Try Scite →

5. Perplexity Free tier · paid from €19/mo

AI answer engine with cited sources — a faster way to search the web.

✓ Always cites sources
✓ Great free tier
✓ Deep Research mode on Pro

✗ Citations still need checking
✗ Less good for creative tasks

Try Perplexity →

Prices & details last verified 2026-08-16.

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