Unriddle (Anara AI)

Unriddle, now rebranded as Anara AI, is a Y Combinator-backed AI research assistant used by millions of researchers worldwide. It enables users to upload papers, reports, audio, and video files into organized workspaces and query across entire document libraries with natural language. The AI compares findings across documents, highlights contradictions, and extracts themes with verifiable, clickable citations. It supports multiple frontier AI models including GPT-5, Claude 4 Sonnet, and Gemini 2.5 Pro. Integrations with Zotero, Mendeley, Google Drive, Notion, and OneDrive streamline workflows. Plans range from a free tier with limited AI words and uploads to premium plans offering unlimited usage, advanced AI models, AI agents for deep search, and enterprise features.