kitio.aiKeenious vs Sona by Read This Twice
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Sona by Read This Twice is completely free, while Keenious is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Text-based paper recommendations
- Word and Docs add-ons
- Topic exploration
- Paper explanations
- OpenAlex index
- Book suggestions from descriptions
- Genre and mood matching
- Example prompts
- Links to curated book lists
| Feature | Keenious | Sona by Read This Twice |
|---|---|---|
| Best for | Finds relevant papers by analyzing the text you're writing | AI assistant that recommends books from a plain description |
| Category | Research & search | Research & search |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | Keenious | Read This Twice |
| Based in | Norway | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Sona by Read This Twice is completely free, while Keenious is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Up to 3 MB PDF uploads
- Web app, Word and Google Docs access
Plus (Individual)
From $10/mo, billed yearly
- Unlimited searches and topic maps
- Unlimited companion conversations
- Export to RIS, BibTeX, Zotero, CSV
- Up to 20 MB PDF uploads
Team
$20/user/mo, billed yearly
- Per user
- Everything in Plus
- Admin console and central billing
- Dedicated support
University
Custom
- Campus-wide license
- Invoiced annually
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Keenious
- Works from your own draft
- Finds cross-field papers
- Integrates with Word and Docs
- Full access often via institutions
- Less known than rivals
Sona by Read This Twice
- Understands detailed story descriptions
- Free to try
- Backed by a large book catalog
- Only recommends books
- Little detail on how results are ranked
- Paid site features are not explained
Which one should you choose?
Choose Keenious if you want:
- Works from your own draft
- Finds cross-field papers
- Integrates with Word and Docs
Watch out: full access often via institutions.
Choose Sona by Read This Twice if you want:
- Understands detailed story descriptions
- Free to try
- Backed by a large book catalog
Watch out: only recommends books.
Keenious vs Sona by Read This Twice FAQ
What is the difference between Keenious and Sona by Read This Twice?
Keenious: Finds relevant papers by analyzing the text you're writing. Sona by Read This Twice: AI assistant that recommends books from a plain description. Both are research & search tools.
Is Keenious or Sona by Read This Twice cheaper?
Sona by Read This Twice is completely free, while Keenious is freemium.
Do Keenious and Sona by Read This Twice have free plans?
Keenious: Yes. Sona by Read This Twice: Yes, fully free.
Who makes Keenious?
Keenious is made by Keenious, based in Norway.
Who makes Sona by Read This Twice?
Sona by Read This Twice is made by Read This Twice.
Which should I choose, Keenious or Sona by Read This Twice?
Choose Keenious if you value works from your own draft and finds cross-field papers. Choose Sona by Read This Twice if you value understands detailed story descriptions and free to try.