Tools · Comparison

Connected Papers vs Semantic Scholar vs StudyforCitizenship

All three are research tools. Here is what separates them.

	Connected Papers	Semantic Scholar	StudyforCitizenship
What it is	A unique, visual tool to help researchers and applied scientists find and explore papers relevant to their field of work.	Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.	A study guide for US Naturalization Test, in every language.
Category	Research	Research	Research
Pricing	Paid	Free · Free	Paid
How it bills	Not published	Free	Not published
Free tier	No	Yes	No
Rating	Not yet rated	Not yet rated	Not yet rated
Features	—	Over 200 million indexed papers One-sentence paper summaries Influential citation detection Free public API Author and topic feeds	—
What works	Sits in Research, one of the better-covered categories here — easy to compare	Completely free and non-commercial Underpins many paid tools Open API for building on	Sits in Research, one of the better-covered categories here — easy to compare
What does not	No free tier — it has to be paid for before it can be tried Does not publish a price on its own site, so the cost is only clear after signing up 44 other tools in this catalogue claim to do the same job 12 tools in the same category have a free tier	Interface is plainer than commercial rivals Summaries are terse No workflow or note-taking features	No free tier — it has to be paid for before it can be tried Does not publish a price on its own site, so the cost is only clear after signing up 44 other tools in this catalogue claim to do the same job 12 tools in the same category have a free tier

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