Machine Heart

Oct 20, 2026 · Artificial Intelligence

WorldMemArena: Benchmarking Multimodal Agent Memory in Action-World Loops

WorldMemArena, a NeurIPS 2026 benchmark from UCSB, Stanford, ETH Zurich, and others, evaluates multimodal agent memory across write, maintain, retrieve, and use stages in dynamic action-world loops, showing high recall rates (86%) don't guarantee correct answers (50%).