Matrices is an AI-powered spreadsheet tool, primarily designed to autonomously carry out research and fill in data. It employs a multitude of AI agents to manage and automate business workflows, thereby streamlining the processes involved in data compilation and research. A key feature is its multi-source support whereby every data cells answer is based on various sources, coupled with honest confidence scores. Transparency is emphasized in the research process, making the provenance and reliability of the data evident. Moreover, Matrices is not limited to public data only. It can also analyze proprietary data, enabling businesses to leverage their unique database. The tool is fully extensible and customizable, allowing users to build custom automations to fit into their workflow. Another notable aspect is its usage of natural language for operation, providing a user-friendly experience with a minimal learning curve. The tool also has personalization features that can take into account user context and goals to deliver more tailored results. Matrices is developed with a vision of the future of work, where a large fraction of tasks, especially data-centric and research tasks, are handled by AI. It acts as a profound technology that aids its users in saving time and optimizing recurrent tasks by automating manual cell-filling tasks in spreadsheets.