kitio.aiSemantic Scholar vs Moonlight
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Semantic Scholar is completely free, while Moonlight 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
- Inline explanations
- Translation
- Section summaries
- Citation previews
- Chrome extension
| Feature | Semantic Scholar | Moonlight |
|---|---|---|
| Best for | Free AI-powered search engine for scientific literature | AI reading companion that explains and translates research papers |
| Category | Research & search | Research & search |
| Pricing model | Free | Freemium |
| Starting price | Free | $12/mo |
| Free plan | Yes, fully free | Yes |
| Made by | Allen Institute for AI | Corca |
| Based in | United States | South Korea |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Semantic Scholar is completely free, while Moonlight is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Unlimited document access
- AI features for 3 papers/week
Pro
$12/mo
- Unlimited interactive AI features
- Infographic explanations
- Selected advanced AI models
Premium
$59/mo
- Everything in Pro
- Unlimited access to all AI models
- Chat support
Enterprise
Contact sales
- For 30+ seats
- University partnerships
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
Moonlight
- Reads papers in place
- Strong translation help
- Free plan available
- Focused on reading only
- Paid plan for heavy use
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 Moonlight if you want:
- Reads papers in place
- Strong translation help
- Free plan available
Watch out: focused on reading only.
Semantic Scholar vs Moonlight FAQ
What is the difference between Semantic Scholar and Moonlight?
Semantic Scholar: Free AI-powered search engine for scientific literature. Moonlight: AI reading companion that explains and translates research papers. Both are research & search tools.
Is Semantic Scholar or Moonlight cheaper?
Semantic Scholar is completely free, while Moonlight is freemium.
Do Semantic Scholar and Moonlight have free plans?
Semantic Scholar: Yes, fully free. Moonlight: Yes.
Who makes Semantic Scholar?
Semantic Scholar is made by Allen Institute for AI, based in United States.
Who makes Moonlight?
Moonlight is made by Corca, based in South Korea.
Which should I choose, Semantic Scholar or Moonlight?
Choose Semantic Scholar if you value completely free and huge paper index. Choose Moonlight if you value reads papers in place and strong translation help.