OpenAI Kills Atlas, Launches ChatGPT Work & GPT-5.6

OpenAI has discontinued its Atlas web browser and integrated its functions into a new agent called ChatGPT Work. This new system is designed to complete multi-step office tasks independently across a user's connected applications. ChatGPT Work can build spreadsheets, slide decks, and documents. It gathers information from existing tools and turns it into finished materials. The system can stay active on a single project for hours, breaking down large tasks without ongoing supervision. This change also folds the Codex coding agent into a single interface layered on top of ChatGPT. Codex now serves over 5 million people weekly, with more than 1 million using it for non-software development tasks. ChatGPT Work is powered by GPT-5.6, a model described as reaching a new level of performance in multi-step tasks and producing materials that follow user templates. This model is also becoming the preferred choice inside Microsoft 365 Copilot. The Codex desktop application is merging into a new, unified ChatGPT desktop app, offering Chat mode, Work mode, and Codex side by side. This consolidation streamlines how users interact with OpenAI's tools.