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Agents2026-08-12 · source-backed
When a multi-agent run fails you need to know which agent, which step, what kind. ASCon builds contextualized representations from trajectories using direction-aware graph attention, masked step-to-agent attention, and agent-conditioned step contextualization, then attaches specialized heads rather than training separate models (arXiv 2608.10646). +5.83% micro-accuracy on faulty-agent detection, +10.63% on faulty-step, +14.73 Macro-F1 on failure-mode, with better out-of-domain performance when paired with LLM attribution. If you run orchestration in production without a way to localize blame in a trace, this is the shape of what you're missing.
Each link below shares sources, entities, or timing with this story.
Simon Willison released LLM / Shared entity: When / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released LLM); both cover When; overlapping topics (agent, model).
Simon Willison released LLM / Shared entity: LLM / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; overlapping topics (agent, model).
Simon Willison released LLM / Same source domain / Shared topic / Tension
Linked by a graph relationship (Simon Willison released LLM); reported by the same outlet (arxiv.org); overlapping topics (agent, model).
Simon Willison released LLM / Shared entity: LLM / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; overlapping topics (agent, model).
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; overlapping topics (agent, blame).
Simon Willison released LLM / Shared entity: When / Shared topic / Earlier coverage
Linked by a graph relationship (Simon Willison released LLM); both cover When; overlapping topics (agent, model).
Linked by a graph relationship (Simon Willison released LLM); both cover When; overlapping topics (agent, attention).
Simon Willison released LLM / Shared entity: LLM / Earlier coverage / Tension
Linked by a graph relationship (Simon Willison released LLM); both cover LLM; earlier LLM coverage from 2026-07-27.