The Driftproof receipt for reddit-automation on Claude Haiku 5.5, from Report 018, dated 2026-11-02, and what it can say.
reddit-automation on claude-haiku-5-5
Not enough draws
Not enough draws to conclude at this effect floor.
Draws needed: no draw count at these spreads (case rank: the two arms' spreads sum to 0.121, at or above the 0.05 floor).
Skill token cost: +2776 input and +334 output tokens per call against no skill (measured, grading excluded).
The two arms
| arm | mean | spread across cases | cases |
|---|---|---|---|
| with the skill | 0.770 | ± 0.070 | 3 |
| without the skill | 0.794 | ± 0.092 | 3 |
No lift is stated for a state that did not measure one. A spread is the sample standard deviation of the per-case means: a descriptive spread with no coverage probability. The verdict above reads each case's two bands, not these aggregates.
This receipt also reads the skill against a same-length placebo. Report 018 shows that reading.
What was verified
receipt_hash verified when this page was built from receipts/report-018/campaign-3/c7bc4e48be8fd9fd6f1cf966096fc6b415e7dfbd57d9c017f0bc9d8032c678f2.json; run.transcripts records retained-local.
Receipt hash: be3706cb75cfc7cb8c8b82a708a0e9d2fec8398d38e443841f2d819fecbb2ac0
Check this file yourself
validate shows that this file is unchanged since it was sealed. It does not show who made it or who sealed it.
curl -fsSLO https://raw.githubusercontent.com/driftproofhq/driftproof/main/receipts/report-018/campaign-3/c7bc4e48be8fd9fd6f1cf966096fc6b415e7dfbd57d9c017f0bc9d8032c678f2.json
npx driftproof@0.27.0 validate c7bc4e48be8fd9fd6f1cf966096fc6b415e7dfbd57d9c017f0bc9d8032c678f2.json