OpenAI has temporarily disabled the model router system for most ChatGPT users, a feature that automatically directed queries to different AI models like GPT-4o or GPT-3.5 based on complexity. The company stated the rollback is a temporary measure to ensure quality and reliability, allowing them to gather more feedback and improve performance. This system was designed to optimize cost and speed by using simpler models for straightforward tasks. The decision follows user reports of the router sometimes selecting less capable models for complex requests. OpenAI plans to refine the system before a broader re-release. For the full details, read the article at https://www.wired.com/story/openai-router-relaunch-gpt-5-sam-altman/