Business Bench

Tasks · desk · Bookkeeping

Catch-up prorations for February to April plan changes

plan-change-proration · 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.

The billing sync never charged or credited any plan changes since February. Work out the prorations for everything in the change log following Jonah's rules and save them as prorations.csv so we can put them on the May invoices.

Workspace

  • accounts_export_2026-05-02.xlsx
  • plan_change_events_2026-02-01_to_2026-04-30.csv
  • price_book_2026.csv
  • proration_rules_from_jonah.md

Expected deliverables

  • prorations.csv

Checks

The task passes only when every required check passes. Reference answers, tolerances, and the planted traps are in the repository, not here.

CheckTypeRequiredFailed (frozen) / 6
requested columnscsv_columnsyes0
which changescsv_set_equalyes0
row countcsv_row_countyes0
days proratedcsv_values_matchyes0
proration amountscsv_values_matchyes0

Recorded results, complete desk comparison

pass pass, frozen scorer only fail timed out
SystemRepetitionsFrozen / 3Raw / 3Median minutesMean cost (USD)
Proto / DeepSeek V4.1 Flash331.10.0143
Codex / GPT-5.6 sol331.60.2030

Per-attempt check verdicts, raw and frozen verdicts, usage, receipt and artifact hashes for this task are in results/latest/attempts.jsonl under "task": "plan-change-proration".