ChatGPT Now Lives Inside Excel for Faster Data Work

OpenAI just dropped ChatGPT for Excel, and it’s basically having an AI analyst embedded directly in your spreadsheets. The new add-in lets you build, update, and analyze models using plain English—no more wrestling with complex formulas or manually linking cells. Powered by GPT-5.4, it can run scenario analysis, trace errors, and even explain how assumptions flow through a model. On top of that, ChatGPT now connects to major financial data sources like FactSet, S&P Global, and LSEG, so you can pull trusted data without switching tabs. Google Sheets support is also rolling out. The update aims to cut hours or even days of grunt work for analysts, accountants, and strategists, freeing them up for actual decision-making. GPT-5.4 Thinking mode is live across ChatGPT, Codex, and the API too, with beefed-up reasoning for finance workflows. Why it matters: This is a sign that AI is moving beyond generic chatbots into specialized, role-specific tools that could reshape how knowledge workers spend their time.