CodexWorkSTOP 12
Settled by your rule
Your brief already settles it: row 6 copies row 5, and the rule says what to do.
The brief already says what to do: flag the copy, keep both, count one.
| source_row | expense_id |
|---|---|
| 5 | 001005 |
| 6 | 001005 |
If it guesses
Each needless question spends your attention, and too many teach you to approve without reading.
COPY INTO YOUR INSTRUCTION
If my instructions already settle a case, follow the rule without asking. Then say in one line what you did and which rule you applied.
RECORDED SYNTHETIC RUNS / EXPENSE CLEANUP
On row 6, Codex followed the brief's duplicate rule and asked nothing. Sonnet, Opus and Haiku each asked about it. Same file, same instruction.
13 & 22 October 2026 · Open the field test →