Summary & Key Takeaways ​

• The Agent Platform's evaluation service is now Generally Available.
• It provides a unified engine for consistent agent quality measurement.
• Developers can use over 20 pre-built metrics or DeepMind-backed adaptive rubrics.
• Custom code-based and LLM-as-a-judge metrics are also supported.
• The service integrates with existing workflows via SDKs and CLI tools.
• Built-in simulators automate complex multi-turn testing and streamline CI pipelines.

Our Commentary ​

Robust evaluation is the bedrock of reliable AI, especially in enterprise settings. The GA of this service is a big deal, offering a comprehensive suite of tools to measure agent quality. The inclusion of DeepMind-backed rubrics and LLM-as-a-judge metrics shows a serious commitment to advanced testing. This is exactly what the industry needs to move beyond 'it mostly works' to 'it works reliably'.