Connected Papers, founded in 2019, takes a different approach than most tools in this category: instead of a chat interface answering questions about a paper's content, it builds a visual graph of related papers based on shared citations, showing how a body of research connects around a starting paper rather than summarizing what any single paper says.
That graph-based approach suits an earlier stage of research than question-answering does: finding what to read in the first place, understanding how a field's literature clusters, and identifying influential or foundational papers a search-by-keyword approach might miss entirely. It is a mapping tool, not a reading tool, and the two purposes are complementary rather than competing.
A free tier covers standard use, and paid plans start around $5 a month for more graphs and features. For the specific task of discovering related work and understanding how papers in a field connect to each other, before diving into reading any single one closely, Connected Papers' visual graph addresses a need none of the chat-based research assistants in this category are built to solve.
