ChatGPT is now using its 5.4 Thinking model for deeper reasoning, and it's even better at handling "professional work." ...

OpenAI launches ChatGPT for Excel powered by GPT-5.4, enabling users to build, update, and analyze spreadsheet models using plain language.

OpenAI released GPT-5.4 in ChatGPT (as GPT-5.4 Thinking), the API, and Codex, calling it its most capable and efficient ...

OpenAI is bringing ChatGPT directly into spreadsheets. The new Excel add-in lets users analyse data, build models and run scenarios using simple prompts, with Google Sheets support expected soon.

OpenAI on Thursday released an updated model powering ChatGPT, along with tools that let the chatbot work directly in Excel and Google Sheets. Why it matters: The update keeps the pressure on rivals ...

The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some tasks) than its predecessors).

OpenAI has announced ChatGPT for Excel alongside new financial app integrations, positioning its latest model, GPT-5.4, at the centre of ...

OpenAI has introduced GPT-5.4, the latest upgrade powering ChatGPT with a new “Thinking Mode,” better reasoning, and integrations with Microsoft Excel and Google Sheets. The update aims to improve ...

OpenAI integrates Excel support and live financial data into ChatGPT, creating a powerful spreadsheet co-pilot for traders, analysts, and crypto investors.

The ChatGPT Thinking version features a new interaction style, where the model first displays an upfront plan of its reasoning process.

"In ChatGPT, GPT‑5.4 Thinking can now provide an upfront plan of its thinking, so you can adjust course mid-response while it’s working, and arrive at a final output that’s more closely aligned with ...

ChatGPT Business vs Microsoft 365 Copilot for UK accountancy practices using Xero and Making Tax Digital. Pricing, workflow fit and verdict for 2026.