Tools · Comparison

Connected Papers vs Perplexity Labs vs Semantic Scholar

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

	Connected Papers	Perplexity Labs	Semantic Scholar
What it is	A unique, visual tool to help researchers and applied scientists find and explore papers relevant to their field of work.	Runs a longer research task and returns a report, a spreadsheet or a small app rather than an answer.	Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.
Category	Research	Research	Research
Pricing	Paid	Paid · Included with Perplexity Pro $20/mo	Free · Free
How it bills	Not published	Bundled	Free
Free tier	No	No	Yes
Rating	Not yet rated	Not yet rated	Not yet rated
Features	—	Multi-minute research runs Report, spreadsheet and app outputs Charts generated from findings Citations throughout Shareable results	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	Produces a usable artefact, not just text Well cited Good at breadth-first research	Completely free and non-commercial Underpins many paid tools Open API for building on
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	Requires a Pro subscription Slow by design Depth varies by topic	Interface is plainer than commercial rivals Summaries are terse No workflow or note-taking features

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