OpenAI Launches GPT-5.4 with Computer Use and Excel Plugins

OpenAI's latest model, GPT-5.4, is breaking down the barrier between AI and the user's computer with a native 'computer use' mode and deep integration into spreadsheet software. This release comes in two distinct variants: a 'Thinking' model optimized for complex reasoning and a 'Pro' variant engineered for executing multi-step professional tasks that involve both analysis and action. The native computer use capability allows the AI to understand on-screen content and perform actions within a secure, sandboxed environment, effectively acting as a skilled digital assistant. This is powerfully combined with new, dedicated plugins for Microsoft Excel and Google Sheets, enabling users to manipulate financial data, build models, and generate reports through simple conversation. By embedding itself directly into these cornerstone productivity and finance tools, GPT-5.4 is moving beyond a separate chat interface to become an intelligent layer within the core applications where professional w