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Beyond Binary Correctness: Scaling Evaluation of Long-Horizon Agents on Subjecti

BACKGROUND
1 SIGNALFIRST DETECTED 25 March 2026
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12 May
When Agents Overtrust Environmental Evidence: An Extensible Agentic Framework for Benchmarking Evidence-Grounding Defects in LLM Agents

arXiv:2605.08828v1 Announce Type: new Abstract: Large language model agents increasingly operate through environment-facing scaffolds that expose files, web pages, APIs, and logs.

REPORT · WHEN · ArXiv CS.AIOPEN STORY
2 Oct
Measuring the Microtask Eligibility Gap: When Is an Off-the-Shelf SLM Enough for an Agent Harness?

arXiv:2610.00025v1 Announce Type: new Abstract: Agent harnesses increasingly want to run small language models (SLMs) on the microtasks around a frontier large language model

REPORT · WHEN · ArXiv CS.AIOPEN STORY
27 Apr
AgentSearchBench: A Benchmark for AI Agent Search in the Wild

arXiv:2604.22436v1 Announce Type: new Abstract: The rapid growth of AI agent ecosystems is transforming how complex tasks are delegated and executed, creating a new challenge of

REPORT · HOW · ArXiv CS.AIOPEN STORY
16 Oct
OmicsBench: a long-horizon multi-turn benchmark of AI agents on research-study-scale bioinformatics

arXiv:2610.21074v1 Announce Type: new Abstract: Computational biologists increasingly delegate substantial analyses to AI agents in long-horizon, multi-turn sessions, yet most

REPORT · WHAT · ArXiv CS.AIOPEN STORY
2 Apr
Brevity Constraints Reverse Performance Hierarchies in Language Models

arXiv:2604.00025v1 Announce Type: cross Abstract: Standard evaluation protocols reveal a counterintuitive phenomenon: on 7.7% of benchmark problems spanning five datasets, larger

REPORT · HOW · ArXiv CS.AIOPEN STORY
6 May
Evaluating Agentic AI in the Wild: Failure Modes, Drift Patterns, and a Production Evaluation Framework

arXiv:2605.01604v1 Announce Type: new Abstract: Existing evaluation frameworks for large language models -- including HELM, MT-Bench, AgentBench, and BIG-bench -- are designed for

REPORT · WHEN · ArXiv CS.AIOPEN STORY
16 Oct
Kolab: Benchmarking Human-Agent Collaboration in Long-Horizon Workflows

arXiv:2610.21109v1 Announce Type: new Abstract: When humans collaborate with AI agents on long-horizon tasks, what happens to the agents' contributions? For solving long-horizon

REPORT · WHEN · ArXiv CS.AIOPEN STORY
9 Apr
Claw-Eval: Toward Trustworthy Evaluation of Autonomous Agents

arXiv:2604.06132v1 Announce Type: new Abstract: Large language models are increasingly deployed as autonomous agents executing multi-step workflows in real-world software

REPORT · WHAT · ArXiv CS.AIOPEN STORY
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