arena: pre-register v38/v39 pilots

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WsbS5x2rYsMDxP2kW3qqmQ
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ciregenz
2026-08-16 01:30:31 -07:00
co-authored by Claude Fable 5
parent 2e07047ff7
commit 0e2aac1afc
+14
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@@ -595,6 +595,20 @@ VERDICTS (2026-08-16):
don't need durable memory; the REAL test is chore-scale aggregation, which needs an uncapped
chore rerun (expensive, deferred). Flag stays off in champion until that evidence exists.
## PRE-REGISTERED (2026-08-16, before any v38/v39 episode): remaining Tier-1 pilots
v38 TABLE->MARKDOWN pilot — targets (8): read-table, read-table-2, social-media, book-flight
pair, order-food, stock-market, phone-book (table/list-heavy pages). Prediction: >=2/8 flip
(read-table family + one flight/list task), controls 12/12 (no table on the page -> block
renders nothing).
v39 MUTATION-DIFF pilot — targets (8): book-flight pair, use-autocomplete pair, choose-list,
form-sequence-3, search-engine, click-menu (pages that REACT to actions with popups/new rows).
Prediction: >=2/8 flip (autocomplete family especially), controls 12/12 (delta line is small and
only appears when the page actually changed).
Order: v38 then v39, sequential, auto-chained.
## Open-source / SOTA reference points (2026 leaderboards, for honest comparison)
- WebArena: SOTA WebTactix/DeepSeek-v3.2 74.3%; frontier models 64-68%; human 78. (leaderboard.steel.dev)