An open letter signed by tech leaders and prominent AI researchers has called for AI labs and companies to "immediately pause" their work. Signatories like Steve Wozniak and Elon Musk agree risks warrant a minimum six month break from producing technology beyond GPT-4 to enjoy existing AI systems, allow people to adjust and ensure they are benefiting everyone. The letter adds that care and forethought are necessary to ensure the safety of AI systems -- but are being ignored. The reference to GPT-4, a model by OpenAI that can respond with text to written or visual messages, comes as companies race to build complex chat systems that utilize the technology. Microsoft, for example, recently confirmed that its revamped Bing search engine has been powered by the GPT-4 model for over seven weeks, while Google recently debuted Bard, its own generative AI system powered by LaMDA.