Question: I'm looking for a research tool that helps me find relevant scientific papers and stay up-to-date with the latest developments in my field.

If you want a serious research tool to find and follow scientific papers, Semantic Scholar is a good option. This AI-powered service indexes more than 219 million papers across all fields of science. It's got powerful search tools, brief summaries, and tools to organize papers, share folders with collaborators, and suggest papers based on your interests. The service also can send automated email alerts when papers cite a paper you're interested in and offers a dashboard to track research activity, all for free with no subscription required.

Another option is Epsilon, an AI-powered search engine that gives you quick access to relevant citations, summarized content and synthesized information. It indexes a database of more than 200 million academic papers, and offers tools like Investigate for summarized answers with inline citations, Search for organizing publications, Validate for extracting key information, and Synthesize for detailed summaries. Epsilon offers customized pricing levels depending on your needs, from free use to professional and organization plans.

If you're looking for an AI-powered research assistant tool, check out Elicit. It can help you find and summarize academic papers, extract data into tables, and identify themes and concepts, and is particularly useful for empirical subjects like biomedicine and machine learning. Elicit also lets you upload your own papers for analysis and offers tools like speeding up literature reviews and automating systematic reviews. It offers several pricing plans, including a free basic version.

Last is OpenRead, which offers a more general-purpose research interface with access to more than 300 million papers and indexing that's updated in real time from more than 20,000 journals. Among its tools are Paper Espresso for summarizing paper content, Paper Q&A for querying papers, and a Related Paper Graph that shows connections between articles. OpenRead also offers tools for note-taking and organization so you can keep track of what you're doing and stay productive. It's available in several pricing tiers.