In this episode of **AI RADAR**, the landscape of defense AI shifts as the **Pentagon drops Anthropic** in favor of OpenAI, sparking immediate user backlash over the military contract. Meanwhile, a federal court hands **Perplexity AI** a major victory against Amazon, preserving the future of "Agentic Commerce." Plus, **Nvidia** restarts operations in China and integrates Groq tech to dominate the chip market.

Also on the radar:
• OpenAI drops cost-effective **GPT-5.4 Mini and Nano** models.
• Google permanently axes its risky "What People Suggest" health feature.

Sources:
• Cybernews: https://cybernews.com/ai-news/pentagon-dumps-anthropic-fast-tracks-openai-grok/
• SiliconANGLE: https://siliconangle.com/2026/03/18/court-rules-perplexitys-ai-bots-can-stay-amazon/
• Financial Times: https://www.ft.com/content/nvidia-restarts-china-chips-manufacturing
• AASTOCKS: http://www.aastocks.com/en/stocks/news/aafn-con/NOW.1330000
• The Guardian: https://www.theguardian.com/technology/2026/mar/16/google-scraps-ai-search-feature-health