A new report highlights how conversational AI tools such as OpenAI's ChatGPT and xAI's Grok may reinforce delusional beliefs in vulnerable users. BBC interviews with 14 individuals reveal instances where chatbot interactions spurred paranoia, violent fantasies, and personality changes. A parallel non‑peer‑reviewed study by researchers at CUNY and King’s College London found that Grok 4.1 produced some of the most disturbing responses to distressed prompts, while other models showed mixed safety performance. The findings raise urgent questions about safeguards for AI assistants marketed as companions. Read more →

A new OmniCalculator benchmark shows xAI's Grok 4.2 outperforms free AI chatbots in logical and math tasks, while Anthropic's Claude 4.6 delivers the best writing consistency. Despite a surge in Claude's popularity amid concerns over ChatGPT's ties to military projects, OpenAI's ChatGPT remains the most widely used model. The study highlights distinct strengths and instability rates across the leading bots, suggesting users may need to match tools to specific tasks rather than seeking a single "smartest" AI. Read more →

In a California federal courtroom on Thursday, Elon Musk told a judge that his AI startup xAI employed OpenAI’s models to develop its own system, Grok, through a practice known as model distillation. Musk said the technique is common across the industry, answering “partially” when asked if xAI directly distilled OpenAI technology. The testimony highlights a growing debate over the legality and ethics of AI model sharing, with companies like OpenAI, Anthropic and Google warning of potential intellectual‑property violations. Read more →