Jenni AI is an AI-powered research and academic writing platform built for students, researchers, and academics who need every claim traceable to a real source. Rather than generating whole essays from a single prompt, Jenni works as an intelligent writing workspace where its AI autocomplete drafts sentence by sentence, drawing from a user-curated library of PDFs and reference managers like Zotero and Mendeley instead of generic web data. Its standout feature is source-grounded, traceable citations: every AI suggestion links back to the exact page and paragraph in the underlying source, with support for over 2,600 citation styles. Jenni also includes semantic research discovery across 200M+ academic papers (with 10M+ full-text open-access papers), a PDF chat that answers questions across an entire library with cited responses, and a Reviews feature that analyzes a draft's claims against its sources to flag unsupported or contradicted statements. Real-time collaboration, inline comments, version history, and export to .docx, LaTeX, and HTML round out the platform. With a free tier and affordable paid plans, Jenni AI has become one of the most widely used writing companions for academic and long-form work, helping users move from research to polished, properly cited drafts inside a single workspace.