Kairos: A Native World Model Stack for Physical AI

Hugging Face Daily Papers Papers

Summary

Kairos is a native world model framework for Physical AI that learns from diverse experiences using a cross-embodiment data curriculum, maintains persistent states with hybrid temporal attention, and supports efficient deployment on server and consumer hardware.

World models are transitioning from passive visual generators to foundational, operational infrastructure for Physical AI: they must natively acquire world knowledge from heterogeneous experience, maintain persistent states over long horizons, and execute efficiently within real deployment constraints. We introduce Kairos, a native world model stack designed around these requirements. (1) Kairos learns the world by pioneering a Native Pre-training Paradigm governed by a Cross-Embodiment Data Curriculum, which organizes open-world videos, human behavioral data, and robot interactions into a progressive developmental pathway. (2) Kairos maintains the world by unified world understanding, generation, and prediction within a Native Unified Architecture equipped with Hybrid Linear Temporal Attention, where sliding-window attention captures local dynamics, dilated sliding windows capture mid-range dependencies, and gated linear attention maintains persistent global memory. We establish formal theoretical bounds demonstrating that this temporal factorization strictly limits error accumulation, mathematically guaranteeing state propagation across extended horizons. (3) Kairos runs the world by incorporating a Deployment-Aware System Co-Design to support low-latency rollout generation on server and consumer-grade hardware for real-world observation-action-feedback loops. Experiments on embodied world-model, long-horizon, and action-policy benchmarks show that Kairos achieves top level performance while offering a strong efficiency-capability trade-off. Together, these results position Kairos as a cohesive operational foundation for future self-evolving physical intelligence.
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Source: https://huggingface.co/papers/2606.16533 Published on Jun 16

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Abstract

Kairos is a native world model framework that learns from diverse experiences, maintains persistent states through hybrid temporal attention, and supports efficient deployment for physical AI applications.

World modelsare transitioning from passive visual generators to foundational, operational infrastructure for Physical AI: they must natively acquire world knowledge from heterogeneous experience, maintain persistent states over long horizons, and execute efficiently within real deployment constraints. We introduce Kairos, a native world model stack designed around these requirements. (1) Kairos learns the world by pioneering aNative Pre-training Paradigmgoverned by aCross-Embodiment Data Curriculum, which organizes open-world videos, human behavioral data, and robot interactions into a progressive developmental pathway. (2) Kairos maintains the world by unified world understanding, generation, and prediction within aNative Unified Architectureequipped withHybrid Linear Temporal Attention, wheresliding-window attentioncaptures local dynamics,dilated sliding windowscapture mid-range dependencies, andgated linear attentionmaintains persistent global memory. We establish formal theoretical bounds demonstrating that thistemporal factorizationstrictly limitserror accumulation, mathematically guaranteeing state propagation across extended horizons. (3) Kairos runs the world by incorporating aDeployment-Aware System Co-Designto support low-latency rollout generation on server and consumer-grade hardware for real-world observation-action-feedback loops. Experiments onembodied world-model, long-horizon, andaction-policy benchmarksshow that Kairos achieves top level performance while offering a strong efficiency-capability trade-off. Together, these results position Kairos as a cohesive operational foundation for future self-evolving physical intelligence.

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