Today on AI RADAR: **Amazon's massive $100B infrastructure deal** with Anthropic, fueled by a new $5B investment to rival the Microsoft-OpenAI juggernaut. Next, **OpenAI's GPT-5.4-Cyber** launches exclusively for verified security defenders, shifting the AI safety paradigm. We also dissect OpenAI's **"Chronicle" for Codex**, a Mac feature capturing continuous screen context that sparks major enterprise privacy concerns. Plus: Google's strategic pivot to **Agentic AI** infrastructure and Anthropic's new global data center leases.

Sources:
• Amazon Invests in Anthropic: https://www.japantimes.co.jp/news/2026/04/21/business/corporate/amazon-to-invest-an-additional-5-billion-in-anthropic/
• GPT-5.4-Cyber Launch: https://www.marktechpost.com/2026/04/20/openai-scales-trusted-access-for-cyber-defense-with-gpt-5-4-cyber-a-fine-tuned-model-built-for-verified-security-defenders/
• Codex Chronicle Preview: https://9to5mac.com/2026/04/20/openai-releases-codex-chronicle-feature-for-enhancing-context/
• Google Cloud Next Agentic AI: https://siliconangle.com/2026/04/20/google-cloud-next-2026-preview-the-real-story-isnt-ai-its-the-control-plane/
• Anthropic Data Center Leases: https://www.datacenterdynamics.com/en/news/anthropic-seeks-data-center-leasing-deals-in-europe-and-australia/