Apple has begun integrating OpenAI's ChatGPT into its devices with the latest iOS update, marking the arrival of a highly anticipated feature that investors hope will boost sales of the new iPhones, reported. This addition is part of a broader rollout of AI-powered tools across Apple's operating systems for iPhones, iPads, and Macs. The ChatGPT integration, first announced in June as part of the "Apple Intelligence" initiative, enables Siri to leverage the chatbot's capabilities.  Users can now ask Siri to assist with tasks like analyzing photos and documents, such as presentations.  Additionally, the update introduces a new "Writing Tools" feature, allowing users to create written content in any compatible app, with ChatGPT also offering image generation. The update arrives during the crucial holiday shopping season, Apple’s most profitable sales period.  However, the gradual rollout of Apple Intelligence features has raised concerns among investors about the potential impact on iPhone 16 sales. The new AI tools are available on the latest iPhone models, including the iPhone 16 series, as well as the Pro and Pro Max versions of the iPhone 15.  iPad users with A17 Pro or M1 chips, as well as Mac users with M1 chips or later, will also be able to access the new features.