kitio.aiSemantic Scholar vs Kagi Search
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Semantic Scholar is completely free, while Kagi Search is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Paper search
- TLDR summaries
- Research feeds
- Semantic Reader
- Free API
- Ad-free search
- Quick Answer summaries
- Kagi Assistant
- Domain ranking controls
- Search lenses
| Feature | Semantic Scholar | Kagi Search |
|---|---|---|
| Best for | Free AI-powered search engine for scientific literature | Ad-free paid search engine with an AI assistant and quick answers |
| Category | Research & search | Research & search |
| Pricing model | Free | Freemium |
| Starting price | Free | $5/mo |
| Free plan | Yes, fully free | Yes |
| Made by | Allen Institute for AI | Kagi |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Semantic Scholar is completely free, while Kagi Search is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Trial
Free
- 100 searches to try
Starter
$5/mo
- 300 searches per month
- Ad-free private search
Professional
$10/mo
- Unlimited searches
Ultimate
$25/mo
- Unlimited searches
- Kagi Assistant with premium models
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
Semantic Scholar
- Completely free
- Huge paper index
- Useful public API
- No chat-style answers
- Full text not always available
Kagi Search
- No ads or tracking
- Customizable results
- Access to many AI models
- Paid for regular use
- Smaller index partners than Google
Which one should you choose?
Choose Semantic Scholar if you want:
- Completely free
- Huge paper index
- Useful public API
Watch out: no chat-style answers.
Choose Kagi Search if you want:
- No ads or tracking
- Customizable results
- Access to many AI models
Watch out: paid for regular use.
Semantic Scholar vs Kagi Search FAQ
What is the difference between Semantic Scholar and Kagi Search?
Semantic Scholar: Free AI-powered search engine for scientific literature. Kagi Search: Ad-free paid search engine with an AI assistant and quick answers. Both are research & search tools.
Is Semantic Scholar or Kagi Search cheaper?
Semantic Scholar is completely free, while Kagi Search is freemium.
Do Semantic Scholar and Kagi Search have free plans?
Semantic Scholar: Yes, fully free. Kagi Search: Yes.
Who makes Semantic Scholar?
Semantic Scholar is made by Allen Institute for AI, based in United States.
Who makes Kagi Search?
Kagi Search is made by Kagi, based in United States.
Which should I choose, Semantic Scholar or Kagi Search?
Choose Semantic Scholar if you value completely free and huge paper index. Choose Kagi Search if you value no ads or tracking and customizable results.