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Ama-bench: Evaluating long-horizon memory for agentic llms

15 Pith papers cite this work. Polarity classification is still indexing.

15 Pith papers citing it
abstract

Large Language Models (LLMs) are increasingly used as autonomous agents in complex, long-horizon applications, where effective memory is critical for sustained performance. Yet existing memory benchmarks are largely dialogue-centric, while real agent memory consists of continuous agent-environment interaction trajectories composed of states, actions, observations, and tool outputs. To address this gap, we introduce **AMA-Bench** (**A**gent **M**emory with **A**ny length), a benchmark for evaluating long-horizon memory in realistic agentic settings. AMA-Bench combines real-world agent trajectories from representative applications with expert-curated QA, as well as synthetic trajectories that scale to arbitrary horizons with rule-based QA. Our study shows that existing memory systems underperform because they fail to capture causal and objective information and rely heavily on lossy similarity-based retrieval. We further propose **AMA-Agent**, a memory system based on causality-graph construction and tool-augmented retrieval. AMA-Agent achieves **57.22%** accuracy on AMA-Bench, outperforming the strongest baseline by **11.16%**. Resources are available at: [https://ama-bench.github.io/](https://ama-bench.github.io/).

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representative citing papers

MedMemoryBench: Benchmarking Agent Memory in Personalized Healthcare

cs.AI · 2026-05-12 · conditional · novelty 8.0

MedMemoryBench supplies a 2,000-session synthetic medical trajectory dataset and an evaluate-while-constructing streaming protocol to expose memory saturation and reasoning failures in current agent architectures for personalized healthcare.

MemGym: a Long-Horizon Memory Environment for LLM Agents

cs.CL · 2026-05-20 · unverdicted · novelty 7.0

MemGym unifies agent gyms into a memory benchmark with isolated scoring across tool-use, research, coding, and computer-use regimes plus a lightweight reward model for tractable coding evaluation.

Four-Axis Decision Alignment for Long-Horizon Enterprise AI Agents

cs.AI · 2026-04-21 · unverdicted · novelty 7.0

Long-horizon enterprise AI agents' decisions decompose into four measurable axes, with benchmark experiments on six memory architectures revealing distinct weaknesses and reversing a pre-registered prediction on summarization.

What Happens Inside Agent Memory? Circuit Analysis from Emergence to Diagnosis

cs.AI · 2026-05-05 · unverdicted · novelty 6.0

In LLM agents, memory routing circuits emerge at 0.6B scale while content circuits appear only at 4B, and write/read operations recruit a pre-existing late-layer context hub instead of creating a new one, enabling a 76% accurate unsupervised failure diagnostic.

Stateless Decision Memory for Enterprise AI Agents

cs.AI · 2026-04-22 · unverdicted · novelty 6.0

Deterministic Projection Memory (DPM) delivers stateless, deterministic decision memory for enterprise AI agents that matches or exceeds summarization-based approaches at tight memory budgets while improving speed, determinism, and auditability.

Opal: Private Memory for Personal AI

cs.CR · 2026-04-02 · unverdicted · novelty 6.0

Opal enables private long-term memory for personal AI by decoupling reasoning to a trusted enclave with a lightweight knowledge graph and piggybacking reindexing on ORAM accesses.

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