Business Bench

Tasks · desk · Spreadsheet

October renewal letters and the lapsed list

membership-renewals · 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.

Leila needs this month's letter lists: who is due to renew in October and who has lapsed. Work it out from the membership export and save renewals.csv - her note has the museum's rules.

Workspace

  • members_export_2026-09-15.csv
  • note_from_leila.txt
  • renewal_letters_mailed_2026-08-14.csv

Expected deliverables

  • renewals.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
members on the listcsv_set_equalyes0
row countcsv_row_countyes0
list per membercsv_values_matchyes0
expiry datescsv_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 Flash331.60.0196
Codex / GPT-5.6 sol332.50.2999

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