The rebuilt ChatGPT platform emphasises a unified, multi-functional workspace designed for both everyday users and advanced productivity needs. Key capabilities include: 1. Advanced Workflow Integration 1.1. Work Tab: Introduces a systematic planning-and-action loop that automates complex tasks. It allows users to define specific inputs, integrate various plugins, and manage projects in a single, cohesive environment. 1.2. Unified Application: The new desktop app consolidates several previously standalone tools, merging Web Browsing, Codex functionality, and the new Work interface into one streamlined hub. 2. Intelligent Document Synthesis & Creation 2.1. Document Processing: The models are highly adept at synthesising vast amounts of data from disparate sources—such as PDFs, Excel sheets, and reports—to generate comprehensive documents, spreadsheets, or presentations. 2.2. Sites Feature: A powerful paid-plan capability that allows users to generate, host, and refine professional-looking web applications or websites directly within the chat window, providing a clean alternative to traditional file sharing. 3. Next-Generation Model Family (GPT-5.6) 3.1. Performance: The new models—Saul, Terra, and Luna—offer top-tier performance benchmarks. Specifically, Saul delivers capabilities comparable to leading models like Fable but at a significantly reduced operational cost. 3.2. Ultra Mode: For high-complexity tasks, the Ultra setting triggers a multi-agent system that coordinates at least four independent AI agents to work in tandem, allowing for deeper, more reliable task execution. 4. Enhanced Interaction & Utility 4.1. Real-Time Voice Mode: Features significantly improved latency, supporting fluid, live translation between languages. The mode is designed to handle natural conversational flow, including the ability for the AI to speak over or alongside the user during interactions. 4.2. Plugin Ecosystem: With over 1,500 plugins, the platform supports highly diverse use cases, now bolstered by the ability to import specific 'skills' —a format for custom instructions that allows for personalised writing voices and specialised task management.