If you want a site to upload research papers and get summaries or explanations for specific sections, Explainpaper is a strong contender. The AI-powered tool can explain complex subjects and offers features like paper summaries, multi-paper analysis and the ability to ask follow-up questions. It offers three tiers of pricing, including a free option, so it can accommodate different needs. The Pro plan uses GPT-4 for more advanced abilities.
Another strong contender is SciSpace. You can upload your own PDFs or tap into more than 200 million research papers, and then interact with them by highlighting passages or asking questions. SciSpace can generate explanations and summaries, and it can do other things like paraphrase text, generate citations and even write literature reviews. It has a free version, but its Premium plan offers more advanced abilities for improving literature reviews.
Enago Read is another contender. The tool is geared for academic researchers, offering features to summarize papers, organize projects and generate collaborative annotations. It also has features like personalized recommendations and a Copilot for explaining complex terms in simpler language. Enago Read offers both free and Premium options, so it's good for different needs and budgets.