chatgpt 5.4

OpenAI has introduced ChatGPT for Excel in beta, enabling users to build and analyze spreadsheet models directly within workbooks. The release also adds financial data integrations from major providers such as FactSet and Dow Jones Factiva.

OpenAI introduced GPT-5.4, a new frontier model combining advanced reasoning, coding, and agentic capabilities. The model brings improved tool use, computer interaction, and long-context performance across ChatGPT, the API, and Codex.