Semantic Scholar
Free AI-powered research literature search and academic graph data tool
About Semantic Scholar
Semantic Scholar is a free AI-powered research tool that can search 239,472,293 papers across all scientific fields; the API page shows the academic graph at 2.49 Billion citations and 79 Million authors. Its Academic Graph REST API provides authors, papers, citations, journals, SPECTER2 vectors and more, and most endpoints can be called publicly without authentication, with unauthenticated requests sharing a 1000 RPS rate limit; the initial rate when using an API Key is 1 RPS for all endpoints. The official site offers datasets as free and openly available resources, and the enhanced reading tool Semantic Reader is currently offered as a trial on some papers.
Best for
Best use cases
Cross-disciplinary research literature search and review surveys
Building applications that analyze paper and citation relationships on the Academic Graph API
Author publication trail and citation network analysis
Using Semantic Reader to better understand the context of scientific literature
Features
AI research literature search
A free AI-powered research search tool; the official homepage shows 239,472,293 papers searchable across all scientific fields.
Academic Graph REST API
The official REST API provides publishing data services including authors, papers, citations, journals and SPECTER2 vectors.
Semantic Reader
An enhanced reading tool that makes context easier to grasp while reading scientific literature; it is currently offered as a trial on some papers.
Free open datasets
The official site provides datasets as free and openly available resources for research and secondary development.
Pros
- Large paper search scale: the official homepage shows 239,472,293 papers searchable across all scientific fields
- Complete API data coverage: authors, papers, citations, journals and SPECTER2 vectors
- Most endpoints can be called publicly without authentication, so integration barriers are low
- The official site provides free and openly available academic dataset resources
Cons
- The 1000 RPS rate limit for unauthenticated endpoints is shared by all unauthenticated users
- Semantic Reader is currently offered as a trial on some papers only, and its availability remains limited
Pricing Plans
Free
- Free AI-powered research literature search tool
- Most endpoints can be called publicly without authentication; unauthenticated requests share a 1000 RPS rate limit
- The official site provides datasets as free and openly available resources
* Pricing information is for reference only. Please refer to the latest announcement on Semantic Scholar's official website.