The right AI tool for academic research depends on what you are doing: searching, mapping connections between papers, or extracting data across many papers. I picked three tools whose own pages describe a clear focus. This is a selection, not a ranking of the market. Siftino may earn commissions through affiliate links, so these links are not neutral. Please keep that in mind when weighing my choices.
Use cases
- Free AI-assisted search of scientific literature: Semantic Scholar.
- Literature review built around connections between papers, starting from one seed article: ResearchRabbit.
- Systematic reviews with screening and data extraction: Elicit, whose Pro plan is described as "for systematic reviews".
Semantic Scholar
Semantic Scholar is a free, AI-powered research tool for scientific literature, based at Ai2, a non-profit research institute. The About page says it indexes over 200 million papers, while . The home page also mentions an API for developers and Semantic Reader, an augmented reader in beta that works for select papers.
Limitations: the sources I have do not describe features such as paper summaries or export options in detail, so check the product itself for those.
ResearchRabbit
ResearchRabbit is built around mapping a literature review. According to its home page, you start with a paper you like as a seed and use it to see how papers connect. The pricing page lists:
- Free: $0, "Forever". Unlimited searches across 310+ million articles, unlimited library and collections, sharing a collection, up to 50 seed articles.
- ResearchRabbit+: $10 per month on the annual plan, $12.5 per month on the monthly plan. Up to 300 seed articles, advanced search controls, multiple projects, Signals alerts and faster support. The page mentions special country discount codes next to the asterisk, and I have no further billing details.
- Institution: contact sales. Includes LibKey integration and usage statistics.
Limitations: the Free plan caps seed articles at 50. The testimonials on the site come from users and librarians, so they are not independent testing.
Elicit
Elicit is aimed at searching papers, summarizing them and extracting data into tables. According to the pricing page, the free Basic plan has unlimited search across more than 138 million papers and limited usage of Research Agent and Research Reports. The page shows two price sets, and I cannot tell from the excerpt which one currently applies:
- Plus: $11 per user/month, billed as $132 annually. Adds export to RIS, CSV, BIB, PDF and DOCX.
- Pro: $39 per user/month, billed as $468 annually, in one version, and $49 per user/month, billed as $588 annually, in the other. It includes a systematic review workflow that can screen 5,000 papers and 20 columns in tables.
- Scale: $89 per user/month, billed as $1,068 annually, or $229 per user/month, billed as $2,748 annually, depending on the version. It adds live collaboration and an admin panel.
- Enterprise: custom pricing.
Limitations: Basic has limited Research Agent and Research Reports usage. Confirm the current price on the pricing page before paying.
How to choose
- Building a first reading list for free: start with Semantic Scholar or the ResearchRabbit Free plan.
- Want to see how papers, authors and topics connect: ResearchRabbit.
- Running a systematic review with screening and extraction: Elicit Pro or higher.
- Check free-plan limits first: seed articles in ResearchRabbit, Research Agent usage in Elicit.
- Confirm current prices and billing terms on the vendor's page.
Is Semantic Scholar free?
The vendor describes it as a free, AI-powered research tool for scientific literature. The home page offers a free account.
Does ResearchRabbit have a free plan?
Yes. The pricing page lists a Free plan at $0, "Forever", with unlimited searches and collections and up to 50 seed articles.
How much does Elicit cost for systematic reviews?
The pricing page lists Pro as the plan for systematic reviews, at $39 per user/month (billed as $468 annually) in one version and $49 per user/month (billed as $588 annually) in another. Check the live page for the current figure.
Sources
- Semantic Scholar - About (retrieved 2026-11-06)
- Semantic Scholar - home page (retrieved 2026-11-06)
- ResearchRabbit - home page (retrieved 2026-11-06)
- ResearchRabbit - pricing (retrieved 2026-11-06)
- Elicit - pricing (retrieved 2026-11-06)