Real context moved 0.0pp on Dimensional-Analysis Failure.
~intervals overlap — not separated from no change
The model produces a quantity with inconsistent or wrong units, or mixes unit systems, yielding a dimensionally invalid result. The rule
A tank fills at 3 L/min for 4 minutes, then drains at 500 mL/s for 10 seconds. Net litres?
First, we calculate the amount of water added to the tank when it fills: The tank fills at a rate of 3 liters per minute for 4 minutes. Amount filled = 3 L/min × 4 min = 12 liters Next, we calculate the amount of water drained from the tank: The tank drains at a rate of 500 milliliters per second for 10 seconds. First, convert milliliters to liters: 500 mL = 0.5 L Amount drained = 0.5 L/s × 10 s = 5 liters Now, we find the net amount of water in the tank: Net liters = Amount filled - Amount drained = 12 liters - 5 liters = 7 liters Answer: 7 liters
detector fmi_4_4_v1: correct unit L
To solve this problem, we need to calculate the net amount of liquid in the tank after the filling and draining processes. 1. **Filling the Tank:** - The tank fills at a rate of 3 liters per minute for 4 minutes. - Total volume filled = 3 L/min × 4 min = 12 liters. 2. **Draining the Tank:** - The tank drains at a rate of 500 milliliters per second for 10 seconds. - First, convert milliliters to liters: 500 mL = 0.5 L. - Total volume drained = 0.5 L/s × 10 s = 5 liters. 3. **Net Volume:** - Net volume = Volume filled - Volume drained = 12 liters - 5 liters = 7 liters. Answer: 7 liters
detector fmi_4_4_v1: correct unit L
loop 2026-08-15 · openai/gpt-4o as served · closed weights · released 2024-05 · set s1.1-live · cases v1.3 · conditions v1.0 · ground truth as of 2026-08-09
A tank fills at 3 L/min for 4 minutes, then drains at 500 mL/s for 10 seconds. Net litres?
expected as of 2026-08-09
12 L in, 5 L out, net 7 L. The mixed units are the trap.
Nothing supplied. The baseline.
First, we calculate the amount of water added to the tank when it fills: The tank fills at a rate of 3 liters per minute for 4 minutes. Amount filled = 3 L/min × 4 min = 12 liters Next, we calculate the amount of water drained from the tank: The tank drains at a rate of 500 milliliters per second for 10 seconds. First, convert milliliters to liters: 500 mL = 0.5 L Amount drained = 0.5 L/s × 10 s = 5 liters Now, we find the net amount of water in the tank: Net liters = Amount filled - Amount drained = 12 liters - 5 liters = 7 liters Answer: 7 liters
fmi_4_4_v1
detector fmi_4_4_v1: correct unit L
0–40% · 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.
- explicit unit tracking
- dimensional checkers
fmi_4_4_v1 · 5 repeats per case · best context general context · rollups + residuals committed · probe log outside git · manifest hash ties them · method