Real context moved -4.2pp on Method/Execution Split.
~intervals overlap — not separated from no change
The model chooses a correct method but executes it wrongly (or vice versa) — a right-approach/wrong-answer or wrong-approach/right-answer split. The rule
A shop sells 17 boxes holding 24 items each, then 8 items are returned. How many items were sold?
To find the total number of items sold, we first calculate the total number of items initially in the 17 boxes. Each box contains 24 items, so: \[ 17 \times 24 = 408 \] This means there were initially 408 items in total. Next, 8 items are returned, so we subtract these from the total: \[ 408 - 8 = 400 \] Therefore, the number of items sold is 400. Answer: 400
detector fmi_4_1_v1: answer matches oracle
To find out how many items were sold, we start by calculating the total number of items initially sold. The shop sells 17 boxes, each containing 24 items. So, the total number of items sold is: \[ 17 \times 24 = 408 \] Next, we account for the 8 items that were returned. Therefore, the number of items actually sold is: \[ 408 - 8 = 400 \] Answer: 400
detector fmi_4_1_v1: answer matches oracle
loop 2026-08-15 · microsoft/phi-4 as served · open weights · released 2024-12 · 14B · set s1.2-live · cases v1.4 · conditions v1.0 · ground truth as of 2026-08-09
A shop sells 17 boxes holding 24 items each, then 8 items are returned. How many items were sold?
expected as of 2026-08-09
400. Order matters: multiply before subtracting.
Nothing supplied. The baseline.
To find the total number of items sold, we first calculate the total number of items initially in the 17 boxes. Each box contains 24 items, so: \[ 17 \times 24 = 408 \] This means there were initially 408 items in total. Next, 8 items are returned, so we subtract these from the total: \[ 408 - 8 = 400 \] Therefore, the number of items sold is 400. Answer: 400
fmi_4_1_v1
detector fmi_4_1_v1: answer matches oracle
0–20% · whisker = 95% interval
never pooled · a trap ratio would skew the delta
Unchanged by context: 0% with none, 0% with the strongest supplied source. For a control mode that flat line is the result — it is what licenses reading movement elsewhere in this loop as grounding rather than as a document being present. Nothing survives at the best condition on the cases measured here.
- tool-assisted computation
- verify final against method
fmi_4_1_v1 · 5 repeats per case · best context general context · rollups + residuals committed · probe log outside git · manifest hash ties them · method