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AgentCore Evaluations Reaches GA with 13 Built-In Evaluators and Ground Truth Support
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Evaluation infrastructure for AI agents has been the quiet gap nobody wanted to talk about — Amazon is now plugging it directly into Bedrock. AgentCore Evaluations hitting GA brings 13 built-in evaluators covering response quality, safety, task completion, and tool usage, plus Ground Truth support that checks actual tool execution sequences against expected ones. The 37–50% cut in P90 latency via incremental state management is the detail worth watching: evaluation that doesn't slow the build loop gets used; evaluation that does, doesn't.
Full analysis
Amazon Bedrock AgentCore Evaluations became generally available in March 2026, offering automated quality assessment for AI agents. It includes 13 built-in evaluators covering response quality, safety, task completion, and tool usage. Ground Truth support measures agent performance against reference answers, behavioral assertions, and expected tool execution sequences. Custom evaluators can use LLM-based or code-based (AWS Lambda) logic. The March 2026 GA follows earlier preview stages and evaluation latency improvements that cut P90 processing time by 37–50% through incremental state management.
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