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ICM-Bench: Person-Level Identity Reasoning in Multimodal Agents with Long-Term Memory

arXiv · AI, language, vision and robotics · article · Sep 3, 2026 · UTC

Long-horizon multimodal agents should remember not only what happened but also who participated. This capability depends on linking recurring faces, voices, names, person-associated objects, events, and social relations to consistent identities over time. Existing long-video and multimodal-agent benchmarks measure broad memory question answering, but they do not isolate the ability to maintain recurring person identities and reason over their cross-time relations. We introduce ICM-Bench (Identity-Centric Memory Benchmark), which, to the best of our knowledge, is the first benchmark specificall

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