
OpenAI’s GPT‑5.4 Launches with Native Spreadsheet Plugins and Million‑Token Context Window
OpenAI has begun rolling out GPT‑5.4, a major upgrade that integrates reasoning, coding, and agentic capabilities into a unified architecture. The model introduces native financial‑services plugins for Excel and Google Sheets and supports a 1‑million‑token context window—enabling it to process entire codebases or lengthy financial documents in a single pass.








