OpenAI has released GPT-5.4, its most capable enterprise-focused model, combining coding, reasoning, and agentic capabilities in a single system. The model boasts 33% fewer hallucinations and includes ChatGPT for Excel and Google Sheets in beta.

Key Features

• 33% fewer hallucinations per claim compared to GPT-5.2
• 18% fewer error-containing responses overall
• ChatGPT for Excel and Google Sheets now in beta
• New integrations: FactSet, MSCI, Third Bridge, Moody for financial workflows

Developer Response

Mario Rodriguez, GitHub CPO: Developers do not just need a model that writes code. They need one that thinks through problems the way they do. GPT-5.4 performs exceptionally well at logical reasoning and executing intricate, multi-step, tool-dependent workflows.

Availability

Available now to ChatGPT Plus, Team, and Pro subscribers, plus API users. GPT-5.4 Pro also available for maximum performance on complex tasks.

Source: Fortune