GPT for Work started in January 2023 as a Google Sheets add-on that exposed a single =GPT() custom function, letting users drag a prompt template down thousands of rows. Microsoft noticed the traction and encouraged the same functionality for Excel, and the product grew into a full spreadsheet AI agent. It is now sold under the Autosheet name, and gptforwork.com redirects there. The underlying vendor is Talarian, an independent bootstrapped software company founded in 2015 that also builds Yet Another Mail Merge.
The standout strength is bulk processing. Autosheet is designed for repetitive row-by-row work — categorizing feedback, scoring leads, translating content, extracting fields, or researching and enriching company data with web lookups. It advertises throughput around a thousand rows per minute with real-time progress and control, which is a different design goal from a general chat assistant that struggles once a range gets long. Alongside that, it handles everyday spreadsheet chores: describing a calculation to get a formula, explaining an existing formula, finding errors in a workbook, splitting or merging columns, and applying formatting.
Autosheet is deliberately model-agnostic. Rather than locking users into one vendor, it offers a choice of current frontier models and even lets teams bring their own custom AI endpoint, which matters for cost control and for organizations with procurement constraints. The team is also candid about limits: it positions the tool as excellent for bulk and everyday work but not the right fit for very complex financial modeling. Installation is via the Google Workspace Marketplace, the Microsoft Marketplace, or MCP connections for Claude and ChatGPT.