AI Agent Developments - April 11, 2025 Google Cloud advanced multi-agent AI systems in healthcare, unveiling Agent2Agent Protocol for cross-platform agent communication and Agent Garden as a centralized hub for enterprise AI tools. This enables healthcare organizations to deploy collaborative agents for revenue cycle optimization and claims processing, with partners like Accenture and Salesforce integrating their solutions. OpenAI announced the GPT-4.1 series, including mini and nano versions optimized for mobile and edge devices, enhancing multimodal capabilities and user intent understanding. Simultaneously, the o3 series debuted with proprietary reasoning chain technology for complex logical tasks in mathematics and scientific research. Google expanded its AI agent portfolio for DevOps, introducing Gemini Code Assist agents that automate code migration, test generation, and GitHub issue resolution. A new $75/month sandbox environment allows developers to experiment with AI-driven prototyping tools for Firebase applications.