Updated April 29, 2026
Google's Agent Development Kit (ADK) is a modular framework for building AI agents that integrates natively with Gemini models and Vertex AI. It supports multi-agent architectures, tool use, memory, and deployment to Google Cloud, providing an end-to-end solution for building agents in the Google ecosystem.
Hermes Agent is Nous Research's open-source autonomous AI agent with persistent memory across sessions. Released February 2026; hit 95.6K GitHub stars in seven weeks. Memory persists in ~/.hermes/memories/ plus 8 external provider plugins (Mem0, Honcho, OpenViking, etc.). Self-creates skills that compound over months of use.
Core capabilities each platform advertises.
What each tool does well, and the limitations to keep in mind.
Pros
Cons
Pros
Cons
Released February 2026; seven weeks later it hit 95,600 GitHub stars — the fastest-growing agent framework of 2026.
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