OpenAI has activated the "Reference Chat History" feature for ChatGPT users across the European Union and several other European countries, including the UK, Switzerland, Norway, Iceland, and Liechtenstein. This update extends the memory capabilities of ChatGPT, allowing users to benefit from improved conversational context retention. Additionally, ChatGPT's web platform has introduced a new voice mode, enhancing user interaction through speech. The voice mode feature has also been integrated into the Grok iOS application, further expanding voice-enabled functionality.