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Large Language ModelsAmazon AI BlogPublished: Apr 3, 2026, 04:00 JST1 min read

AWS introduces ActorSimulator in Strands Evaluations SDK to create realistic user simulations for testing multi-turn AI agents

AWS introduces ActorSimulator in Strands Evaluations SDK to create realistic user simulations for testing multi-turn AI agents

3 Key Points

  1. ActorSimulator addresses the challenge of evaluating multi-turn AI agents by enabling structured user simulation

  2. The tool integrates directly into evaluation pipelines for seamless testing workflows

  3. Realistic user simulation helps developers better assess how AI agents perform in complex, multi-step interactions

  4. Part of AWS's Strands Evaluations SDK, designed to improve AI agent reliability and performance

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