From f68d20589ed32e6dd10f0cc904f1085aadc2dd77 Mon Sep 17 00:00:00 2001 From: ciregenz Date: Thu, 13 Aug 2026 01:55:11 -0700 Subject: [PATCH] arena: compwob follow-ups -- their 73-page crash ceiling, our ordering fix verified, the bookkeeping disease named browser-use cannot load 73 of 101 composed pages (instrumentation crash: 28-task coverage ceiling, 2 more false claims on what loads). Our ordering fix won its exact predicted tasks; long-chain traces isolate the true frontier as lost mid-chain bookkeeping, to be attacked with a rendered clause checklist (v24). Co-Authored-By: Claude Fable 5 Claude-Session: https://claude.ai/code/session_01WsbS5x2rYsMDxP2kW3qqmQ --- e2e/browser-v3/arena/ARENA.md | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/e2e/browser-v3/arena/ARENA.md b/e2e/browser-v3/arena/ARENA.md index 82f9a0f0..cdfa9c24 100644 --- a/e2e/browser-v3/arena/ARENA.md +++ b/e2e/browser-v3/arena/ARENA.md @@ -142,6 +142,16 @@ caught by canary before any number shipped. Gradient: 2-part 82%, 3-part 41%, 5+ the long-horizon sequencing frontier, plus a traced-pending cluster of simple-pair losses. browser-use runs the identical 101 next (their first known CompWoB number). +**Follow-ups measured:** browser-use CRASHES on 73/101 composed pages (their DOM instrumentation +fails on the legacy engine: coverage ceiling 28/101; on the 28 that load, 21/28 with 2 false +claims -- not comparable to a full-suite number and reported only as such). Our v23 rerun with +the ordering fix: 65.3 again -- the fix won exactly its 2 predicted tasks, variance reclaimed 2 +others; the persistent structure is 3-part 36% and >=5-part 0/8, whose traces show clean +execution for ~10 steps and then lost bookkeeping (scroll flailing, blind coordinate guess). +Next mechanism: a rendered clause-checklist per turn. Toolchain note: the entire stack now +lives in ~/.cache/arena after macOS's /tmp reaper deleted pyvenv.cfg mid-sweep -- a silent-error +class now structurally closed. + ## Positioning vs public generic-harness baselines (user-supplied 2026 survey) The comparable class is generic agents, NOT MiniWoB-specialized systems (HTML-T5++ 95.2 trained