Cost per mile per vehicle for the first half
fleet-cost-per-mile · timeout 1200 s · source
The ask
Sent verbatim as the prompt. The agent works in a copy of the workspace below and sees nothing else.
Can you work out what each of our vehicles cost per mile to run from January to June? Save it as fleet_costs.xlsx with live formulas. Carla's note says where everything comes from.
Workspace
- fleet_list_and_odometers.xlsx
- fuel_card_transactions_2026H1.csv
- note_from_carla.txt
- shop_invoices_2026H1.csv
Expected deliverables
- fleet_costs.xlsx
Checks
The task passes only when every required check passes. Reference answers, tolerances, and the planted traps are in the repository, not here.
| Check | Type | Required | Failed (frozen) / 6 |
|---|---|---|---|
| fleet_costs.xlsx exists | file_exists | yes | 0 |
| live formulas | xlsx_has_formulas | yes | 0 |
| no error cells | xlsx_no_errors | yes | 0 |
| Van 26 gallons (litres converted) | xlsx_value_present | yes | 0 |
| Van 24 miles (to the bill of sale) | xlsx_value_present | yes | 0 |
| Van 24 cost per mile | xlsx_value_present | yes | 0 |
| Van 22 total cost (plate-named invoices included) | xlsx_value_present | yes | 0 |
| fleet total cost (no car washes or snacks) | xlsx_value_present | yes | 0 |
| fleet miles | xlsx_value_present | yes | 0 |
Recorded results, complete desk comparison
pass pass, frozen scorer only fail timed out
| System | Repetitions | Frozen / 3 | Raw / 3 | Median minutes | Mean cost (USD) |
|---|---|---|---|---|---|
| Proto / DeepSeek V4.1 Flash | 3 | 3 | 3.8 | 0.0456 | |
| Codex / GPT-5.6 sol | 3 | 3 | 6.1 | 0.5247 |
Per-attempt check verdicts, raw and frozen verdicts, usage, receipt and artifact hashes for this task are in results/latest/attempts.jsonl under "task": "fleet-cost-per-mile".