If you're looking for a service that offers research-backed citations to help you ensure the quality of your writing, Scite is worth a look. The service offers Smart Citations that offer context and categorization of evidence so you can see what's supporting or contradicting a scientific paper. Scite also offers customizable dashboards, reference checking and journal metrics, so it's a good option for researchers and publishers. It indexes more than 1.2 billion citation statements and has a high confidence level for automatically classifying the context of a citation.
Another contender is Semantic Scholar, a free AI-powered research service that gives you access to a massive database of more than 219 million scientific papers. It offers tools to cite papers in different styles, organize papers into folders and create AI-powered research feeds. Semantic Scholar also offers brief summaries (TLDRs) and paper recommendations based on your interests. It's a good option if you want a powerful service without paying a subscription fee.
Epsilon is another contender, particularly if you want AI tools to help you speed up scientific discovery. It offers tools like Investigate for summarized answers with inline citations, Search for organizing publications, Validate for vetting claims, and Synthesize for deeper summaries. Epsilon's GPT-4 integration means results are fact-checked and trustworthy, which is important for researchers.
If you want something more general purpose, you might like Consensus, which covers a lot of research and offers AI insights through tools like Copilot and Consensus Meter. It offers proprietary search filters and returns results that are linked to scientific sources so you can more easily narrow down literature reviews and vet research. It's good for students, researchers and clinicians, and offers different pricing tiers depending on your needs.