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OpenAI has added a character field to the ChatGPT interface, allowing users to specify the chatbot's characteristics, communication style, and rules it should follow. The update is currently being rolled out on chatgpt.com and the Windows desktop version, with plans to expand to mobile apps, MacOS, and EU countries in the coming weeks. Existing user-defined instructions will not be affected by this change. The new feature is part of OpenAI's ongoing efforts to personalize ChatGPT, alongside recently added Tasks and Memory capabilities, bringing AI systems closer to becoming personal assistants.

Image: OpenAI
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Apple has hit pause on its Apple Intelligence notification summaries for news apps after users reported accuracy issues. The problem came to light when the BBC flagged a serious error: the feature had created a false headline about Luigi Mangione, a suspect in the United HealthGroup CEO murder case, incorrectly claiming he had taken his own life. Apple's latest iOS 18.3 beta now clearly labels the feature as being in beta testing. Users can now turn off these automated summaries right from their lock screen, where the summaries now appear in italics. The company has added a warning that these summaries might contain mistakes, and has completely disabled them for all news and entertainment apps for the time being.

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Nvidia is adding three new safety features to its NeMo Guardrails platform, aiming to give companies more control over their AI chatbots. The company says these microservices address common challenges in AI safety and content moderation. According to Nvidia, the Content Safety service checks AI responses for potentially harmful content before they reach users, while the Topic Control service tries to keep conversations within approved subject areas. A third service, Jailbreak Detection, works to spot and block attempts to bypass the AI's security features. Rather than using large language models, Nvidia says these services run on smaller, specialized models that should need less computing power. A few companies, including Amdocs, Cerence AI, and Lowe's, are currently testing the technology in their systems. The microservices are available to developers as part of Nvidia's open-source NeMo Guardrails package.

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Luma has released Ray2, its latest AI model for video generation. The new model has been scaled to 10 times the compute power of its predecessor and uses a new multimodal architecture. Luma says it's better at natural-looking movement and fine details, while maintaining consistency throughout each scene. Text-to-video generation is available to subscribers through Luma's Dream Machine platform, with image-to-video, video-to-video, and editing tools in upcoming releases. The company also plans to make Ray2 accessible through its API soon.

Video: Luma AI

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Synthesia, a company that helps businesses create AI-generated videos and avatars, just secured $180 million in Series D funding. Since its founding in 2017, the platform has grown to serve more than half of Fortune 100 companies, producing millions of minutes of AI-generated video content each month. The company plans to use its fresh funding to develop new features that combine AI avatars with large language models, along with rolling out a new video player. The company says these upgrades will allow customers to create more interactive and personalized video content.

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