According to Sam Altman on Twitter, OpenAI is doubling GPT-5 rate limits for ChatGPT Plus users as the model rollout completes. Plus subscribers will have the option to continue using the legacy GPT-4o model, with OpenAI monitoring usage to determine how long legacy models remain available. These updates are aimed at improving user experience and offering greater flexibility for business applications, signaling a competitive push in generative AI services and enhanced productivity tools. (Source: Sam Altman, Twitter, August 8, 2025)

According to @akshatgupta57, a major revision to their paper on Lifelong Knowledge Editing highlights that better regularization techniques are essential for maintaining consistent downstream performance in AI models. The research, conducted with collaborators from Berkeley AI, demonstrates that addressing regularization challenges directly improves the ability of models to edit and update knowledge without degrading previously learned information, which is critical for scalable, real-world AI deployments and continual learning systems (source: @akshatgupta57 on Twitter, May 23, 2025).