Overview

• GPT-5 is available today to all ChatGPT users and via API, combining previous specialist models into a single system that routes each prompt to the optimal reasoning or efficiency engine.
• The model boosts reasoning accuracy and response speed while reducing hallucinations by up to 80 percent through a new safe completions feature that declines harmful queries responsibly.
• The new ChatGPT Agent demonstrated the ability to execute complex, multi-step business workflows—from data analysis to report generation—under human supervision with real-time override controls.
• Microsoft has started embedding GPT-5 into Microsoft 365 Copilot, GitHub Copilot and Azure AI Foundry, extending its dynamic routing and advanced reasoning to enterprise applications.
• GPT-5 comes in Standard, Mini and Nano variants to suit different resource needs and adds preset personalities and customizable chat colors for a more personalized user experience.