docs(sleep): real Claude<->Codex cross-validation of the new features
Three live runs exercise the new code paths on both runtimes:
A) Claude Sonnet->Haiku, gate=OFF + rollouts_k=2: brief-writer test 0->1.00,
action 'greedy_improved', val & test both reported (3-way split works).
B) Codex, gate=ON + rollouts_k=2: brief-writer test 0->1.00 in 2 nights.
C) Claude Sonnet->Haiku, thorough-analyst, 3 nights: slow-update fires and
distils a durable cross-night meta-rule (general, not task-specific).
Confirms gate-off greedy path, 3-way val/test split, multi-rollout, and the
gate-independent slow-update all work with real models on Claude AND Codex.
Raw logs under docs/sleep/raw/crosscheck_*.txt.
Co-Authored-By: Claude Opus 4 <noreply@anthropic.com>
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@@ -92,3 +92,25 @@ python -m skillopt.sleep.experiments.run_gbrain \
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All of this is exercised by the deterministic test suite (29 tests) and
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validated on real Claude + Codex (see `real_api_results.md` / `FINAL_REPORT.md`).
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## Real cross-validation of the new features (Claude ⟷ Codex)
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Three live runs exercised the new code paths on both runtimes (raw logs under
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`docs/sleep/raw/crosscheck_*.txt`):
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| # | Config | What it proves | Result |
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|---|---|---|---|
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| **A** | Claude Sonnet→Haiku, **gate=off**, **rollouts_k=2** | greedy mode + multi-rollout + 3-way split (val & test both reported) | brief-writer **test 0→1.00**, action `greedy_improved`, val=1.0 test=1.0 |
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| **B** | **Codex**, gate=on, **rollouts_k=2** | new paths on the other runtime | brief-writer **test 0→1.00**, 2-night `accept_new_best`, val+test reported |
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| **C** | Claude Sonnet→Haiku, thorough-analyst, 3 nights | **slow-update** long-term memory fires | test 0→0.33 (val gate holds nights 2–3) and the slow-update distilled a durable meta-rule |
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The slow-update guidance C produced is the kind of cross-night lesson the field
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is for — note it is general, not task-specific:
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> *"On character-constrained tasks (≤1200 chars), plan structure before writing:
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> allocate space per point explicitly and cut until the outline fits, then fill —
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> never draft freely and trim after."*
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Takeaways confirmed live: the **gate-off greedy path**, the **3-way val/test
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split**, **multi-rollout** on both runtimes, and the **gate-independent
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slow-update** all work with real models on both Claude and Codex.
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