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Bank Transaction Analysis

a Financial Analyst. You are tasked with analyzing bank transaction data.

CategoryOffice work › Finance & accounting
TagsAnalyzingOffice workerTable
Prompt
Act as a Financial Analyst. You are tasked with analyzing bank transaction data. Your task is to generate ordered lists based on specific criteria:

1. Most frequently sent payees: List individuals or organizations in order of frequency, including names, dates, and amounts.
2. Suspicious transactions: Identify and list transactions that appear unusual or suspicious, including details such as names, dates, and amounts.
3. Top recipients by sent amount: Rank individuals or organizations by the total amount sent, providing names, dates, and amounts.

You will:
- Process the provided transaction data to extract necessary information
- Ensure data accuracy and clarity in the lists

Rules:
- Maintain confidentiality of all transaction details
- Use accurate and objective criteria for identifying suspicious transactions

Variables:
- ${transactionData}: The input data containing transaction details
- ${criteria}: Specific criteria for defining suspicious transactions

What this prompt does

This prompt assigns a Financial Analyst role to organize bank transaction data by criteria. It requires confidentiality and objective criteria for identifying suspicious transactions.

Model comparison

Claude is strongest for transparent assumptions, accuracy, and structure. Gemini is detailed but mixes baselines, while ChatGPT is concise yet contains an average-calculation error.

ClaudeTop overall
48/ 50

+ Transparently flags missing three-month data and the proxy used.

- The rent and transaction-link observations are somewhat speculative.

ChatGPT
44/ 50

+ Presents all three requested lists concisely and clearly.

- Miscomputes the average and omits the missing three-month-data caveat.

Gemini
44/ 50

+ Clearly details each transaction, totals, and shares.

- Mixes unsupported proxy baselines for the unavailable three-month average.

CriterionChatGPTClaudeGeminiLeader
Instruction following9109Claude +11%
Accuracy798Claude +13%
Specificity91010Tie
Structure9109Claude +11%
Right length1098ChatGPT +11%

Scored 1–10 by gpt-5.6-sol with model names hidden (2026-09-24). This is an AI review, not a measurement.

Read full answers

We gave three models the same input and copied their answers unedited. Each ran in its CLI (an agent harness), and answers in the ChatGPT or Claude apps or on the web may differ. Outputs are in Korean.

Input used
[Pasted material]
거래 데이터:
2024-01-05 | 김민수 | -350,000원 | 정기 이체(월세)
2024-01-08 | ㈜한빛물산 | -1,200,000원 | 매입대금
2024-01-12 | 김민수 | -350,000원 | 정기 이체(월세)
2024-01-15 | 박서연 (신규 수취인) | -48,000,000원 | 계좌이체
2024-01-19 | ㈜한빛물산 | -1,200,000원 | 매입대금
2024-01-22 | 해외송금 · 홍콩 (수취인 미상) | -8,700,000원 | 송금
2024-01-26 | 김민수 | -350,000원 | 정기 이체(월세)
2024-01-29 | 이도현 | -90,000원 | 개인 송금

기준(criteria): 최근 3개월 평균 이체 금액을 5배 이상 초과하는 거래, 신규 등록된 수취인에게 보낸 고액 거래, 신원이 불분명한 해외 계좌로의 송금을 의심 거래로 분류
gpt-5.6-luna (codex CLI · 에이전트 하네스) · Run on 2026-09-24

1. 가장 빈번하게 송금된 수취인

  1. 김민수 — 3회

    • 2024-01-05: 350,000원
    • 2024-01-12: 350,000원
    • 2024-01-26: 350,000원
    • 합계: 1,050,000원
  2. ㈜한빛물산 — 2회

    • 2024-01-08: 1,200,000원
    • 2024-01-19: 1,200,000원
    • 합계: 2,400,000원
  3. 박서연 (신규 수취인) — 1회

    • 2024-01-15: 48,000,000원
  4. 해외송금 · 홍콩 (수취인 미상) — 1회

    • 2024-01-22: 8,700,000원
  5. 이도현 — 1회

    • 2024-01-29: 90,000원

2. 의심 거래

전체 거래 평균 이체액은 약 7,486,250원이며, 그 5배는 약 37,431,250원입니다.

  1. 박서연 (신규 수취인)

    • 날짜: 2024-01-15
    • 금액: 48,000,000원
    • 사유: 평균 이체액의 5배 이상이며, 신규 수취인에게 보낸 고액 거래
  2. 해외송금 · 홍콩 (수취인 미상)

    • 날짜: 2024-01-22
    • 금액: 8,700,000원
    • 사유: 신원이 불분명한 해외 계좌로의 송금

※ 8,700,000원 거래는 평균의 5배에는 미달하지만, 해외 수취인 미상이라는 별도 기준에 따라 분류했습니다.

3. 총 송금액 기준 상위 수취인

  1. 박서연 (신규 수취인) — 총 48,000,000원

    • 2024-01-15: 48,000,000원
  2. 해외송금 · 홍콩 (수취인 미상) — 총 8,700,000원

    • 2024-01-22: 8,700,000원
  3. ㈜한빛물산 — 총 2,400,000원

    • 2024-01-08: 1,200,000원
    • 2024-01-19: 1,200,000원
  4. 김민수 — 총 1,050,000원

    • 2024-01-05: 350,000원
    • 2024-01-12: 350,000원
    • 2024-01-26: 350,000원
  5. 이도현 — 총 90,000원

    • 2024-01-29: 90,000원

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