NotebookLM
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Google's free research notebook that answers questions only from the sources you give it.
Free
5 free tools
🎁Free Summarizer AI tools we like
1 is completely free and 4 have a free plan with paid upgrades. Sorted by popularity.
← All Summarizer tools, free and paidQuillBot
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A handy all-in-one spot to reword, shorten and tidy up text without bouncing between apps.
Free · Premium $9.95/mo
Otter.ai
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Live transcripts and tidy summaries of your meetings, so you can listen instead of scribbling.
Free · Pro $16.99/mo
Eightify
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Skip the hour-long video and get the main points of any YouTube clip in a quick summary.
Free · from $4.99/mo
TLDR This
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Drop in a long article or paper and walk away with the short version in a click.
Freemium🧾 Summarizer
Free · Premium $4/mo
FAQ
What is the best summarizer AI tool in 2026?+
Our shortlist: QuillBot (new, $9.95), NotebookLM (new, free) and Otter.ai (new, $16.99).
Can I use a summarizer AI tool for free?+
Absolutely — 5 tools here have a free plan. We’d start with QuillBot, NotebookLM and Otter.ai.
How much should I expect to pay for summarizer software?+
Most paid plans sit around $7.47/month. The cheapest we list starts at $4, the priciest at $16.99.
Which summarizer tools can developers build on?+
2 offer an API — handy if you want to plug them into your own product. Try QuillBot and Otter.ai.