Grok 4.3 🤖, Claude security beta 🛡️, Cursor xAI analysis 📝

# What You Need to Know This Week Elon Musk's AI assistant Grok is getting smarter with a new 4.3 version, while Anthropic (the company behind Claude) is testing new security features to make the AI safer and more trustworthy. Meanwhile, Cursor—a popular coding tool powered by xAI technology—is being analyzed for how well it actually performs at writing software, which matters if you're considering using AI to help with development work.