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As of Oct 5, 2026, Diachronic's Kairos 1 simulates individual human behavior, evaluated with a User-Sim Index across communication, information, clarification, and error-reaction dimensions.
- Oct 5Official
Diachronic releases Kairos 1, a model built to simulate individual human behavior
Diachronic released Kairos 1, a model built to simulate individual human behavior rather than population averages. It is evaluated with the User-Sim Index, which compares generated conversation turns with human interactions across four shared dimensions: communication style, information patterns, clarification behavior, and reactions to errors. Per its creator, early checkpoints beat models like Persimmon and Astra across 13 simulation tasks; independent replication has not been seen.
Source: Diachronic
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