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Research2026-08-08 · source-backed
arXiv 2608.06171 measures six browser observation modes across eight site-model cells on VisualWebArena and WebArena. Rerunning the same mode on the same tasks flips 12 to 14% of outcomes, so the oracle-routing prize is largely noise, and five routing policies fail to robustly beat fixing one well-chosen mode. What survives: routing only unsolvable tasks to the cheapest mode cuts cost 9.5 to 30.6% in 8 of 8 cells at unchanged success. The obstruction is self-limiting, with correlation 0.95 between label supply and routing opportunity, so weak agents starve the router exactly where it would help.
Each link below shares sources, entities, or timing with this story.
Same source domain / Shared topic / Tension
Reported by the same outlet (arxiv.org); overlapping topics (agent, browser, task); pushes against this story (against).
Same source domain / Shared topic / Downstream implication
Reported by the same outlet (arxiv.org); overlapping topics (agent, fail, success); traces where this leads (downstream).
Shared entity: WebArena / Shared topic / Earlier coverage
Both cover WebArena; overlapping topics (agent, task); earlier WebArena coverage from 2026-04-12.
Same source domain / Shared topic / Tension
Reported by the same outlet (arxiv.org); overlapping topics (agent, beat); pushes against this story (against).
Reported by the same outlet (arxiv.org); overlapping topics (beat, task); pushes against this story (against).
Reported by the same outlet (arxiv.org); overlapping topics (agent, between); pushes against this story (against).
Reported by the same outlet (arxiv.org); overlapping topics (agent, task); pushes against this story (against).
Reported by the same outlet (arxiv.org); overlapping topics (agent, beat); pushes against this story (vs).