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feat(evals): T1-5.1 — re-baseline on claude-fable-5-1, persisted quality rubric, evaluator priced (0.19.0) - #19

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stid merged 4 commits into
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feat/eval-5-1
Sep 4, 2026
Merged

stid merged 4 commits into
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feat/eval-5-1

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@stid stid commented Sep 4, 2026

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Harness D-027 → ROADMAP T1-5.1. Every prior benchmark row ran claude-fable-5; sessions now run 5.1 and D-015 forbids cross-model comparison, so the headline numbers were stranded. This PR re-measures all three arms on 5.1 and turns quality into an artifact.

Changes

  • evals/fixture conventions: closeout-evaluator: on — the opt-in evaluator's cost now lands in the plugin rows (fixture test asserts the key).
  • evals/run-eval.sh: default model claude-fable-5-1 (dry-run test pins it; rows stamp the id).
  • evals/rubric.md + evals/quality/: the two-lens rubric as a persisted artifact, applied to the 9 new 5.1 workspaces and retroactively to the 9 verified fable-5 workspaces (18 independent judges each, none saw another's score).
  • evals/results.md: 9 new rows + the T1-5.1 conclusion. README numbers updated. CHANGELOG 0.19.0.

Results (n=3/arm, one fixture, claude-fable-5-1)

arm cost vs bare quality /75
bare $1.41 1× 71
Standard (triage-routed, evaluator on) $3.33 2.4× 72
Deep (evaluator on) $5.97 4.2× 72

Parity across arms on both tiers (fable-5 on the same rubric: 68/70/68). Evaluator challenged 3/6 plugin closeouts, twice on a real cross-surface parity defect (GET /stats? returned 200 while the CLI rejected the empty arg); all fixed before closeout.

Tests 13/13, plugin validate passes, versions in lockstep (0.19.0, feat/ → minor).

🤖 Generated with Claude Code

https://claude.ai/code/session_01R6BjXKFWAvEtKDYifc2weC

stid and others added 4 commits September 4, 2026 12:06
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R6BjXKFWAvEtKDYifc2weC
…ault model claude-fable-5-1, persisted quality rubric

- evals/fixture conventions: closeout-evaluator: on (its cost lands in the row)
- run-eval.sh: default EVAL_CLAUDE_MODEL claude-fable-5-1 (rows stamp the id; D-015)
- evals/rubric.md: the 5-dim two-lens rubric as an artifact; evals/quality/ for scoring files
- tests: fixture asserts the key; runner dry-run asserts the default model

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R6BjXKFWAvEtKDYifc2weC
…5 workspaces (18 judges, two lenses)

Deep 68 / Standard 70 / bare 68 of 75 — the parity previously quoted from transcripts
now has a file. Checksum-skips-a-record mutation survives in 5/9 workspaces across arms.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R6BjXKFWAvEtKDYifc2weC
…ic scoring artifact, evaluator record; README numbers; CHANGELOG 0.19.0

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R6BjXKFWAvEtKDYifc2weC
@stid
stid merged commit b136539 into main Sep 4, 2026
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@stid
stid deleted the feat/eval-5-1 branch September 4, 2026 21:32
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