Quill AI is a financially-tuned AI platform designed to streamline the analysis of earnings calls and SEC filings. It offers a web app that allows users to ask questions about public company filings and receive answers with sentence-level source citations. Key features include an Excel Addin that automatically updates financial models with data from earnings releases, real-time access to SEC filings and transcripts, customizable alerts, and earnings call Q&A sentiment analysis. The tool is used by analysts at major financial institutions and is available as a web-only plan for $250/month or as an enterprise suite including Excel integration and API access.