Petal

Petal positions itself as the single source of truth for your documents. You upload research papers, technical standards, reports or internal files into a cloud drive that automatically extracts metadata, deduplicates files and handles scientific and technical formats. Once documents are in place, Petal's context-aware generative AI can answer questions in plain language and always points back to the specific document and passage behind the answer, which makes it practical for high-stakes technical and academic work.

Beyond question answering, Petal is a working environment for research. You can highlight key points, leave and share comments, and generate a shareable link instead of emailing files back and forth. Its built-in notebook summarizes, translates and drafts new content from your sources, and citation and reference tooling helps teams keep bibliographic details consistent. The site notes use by more than 20,000 researchers, faculty and industry experts, with academic, corporate R&D and expert use cases.

Petal is free to use at its core and also offers paid tiers and enterprise options such as white-label and enterprise licensing. It is particularly well suited to literature reviews, due diligence on long technical documents, and shared reference libraries for small research groups.