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      "title": "MatrAIx: Harvard and MIT researchers simulate 8.3 billion personas to evaluate AI systems and digital products",
      "source_url": "https://matraix.ai/",
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      "summary": "MatrAIx is an evaluation infrastructure for digital products and AI systems developed by researchers from Harvard and MIT, built on a simulated population of 8.3 billion persona agents. The platform enables testing of AI chatbots, web prototypes, and applications through various task types including surveys, customer service scenarios, and shopping interactions. Personalized persona-based evaluation provides more specific and actionable feedback than generic testing approaches.",
      "summary_generated_by": "ai",
      "submitted_by": "Petr Mišák",
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      "published_at": "2026-08-11T14:51:07Z",
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