Semantic Scholar
A free AI-powered search engine for scientific literature across all fields of research.
Semantic Scholar is a free AI-powered search engine for scientific literature that indexes over 235 million papers across all fields of science. It uses machine learning to rank results by relevance, track citations, and provide an augmented reading experience through Semantic Reader. Researchers, students, and academics use it to discover papers, follow citation networks, and stay current in their fields.
Pros
- Completely free with no usage caps or subscription fees
- Indexes over 235 million papers across all scientific fields
- AI relevance ranking surfaces high-impact papers first
- Citation graph makes it easy to trace research influence
Key Features
- Paper Search
- Citation Graph
- Semantic Reader
- Developer API
- Influence Metrics
- Field Filtering
| Plan | Zotero | Semantic Scholar |
|---|---|---|
| Free | $0 | $0 |
| 2 GB Storage | $2.08/mo | — |
| 6 GB Storage | $4.17/mo | — |
| 15 GB Storage | $8.33/mo | — |