Semantic Scholar is listed under Academic Research, in the Research & Learning category on Flocci AI Tools. Fully free AI-powered search across 237M+ scientific papers. It is free, with no paid plan attached, and it lives at semanticscholar.org.
Semantic Scholar is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 396 entries on Flocci AI Tools with no upgrade path built in.
Semantic Scholar works in a normal browser tab with no install. It is available on the web and an API.
Semantic Scholar does 3 things the catalog singles out: Fully free ai-powered search across 237m+ scientific papers; semantic reader augmented-reading tool for papers; free public api used by many other research tools.
Ai2 Paper Finder (Asta) is the closest free alternative: it sits in the same Academic Research sub-category and is free. alphaXiv, ResearchRabbit and PaperQA2 also start free. The full list is on the alternatives page.
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