Finance

Have two AI models audit each other on a big tax project

A user had Claude do a large tax reconstruction while ChatGPT re-derived the figures from the source documents and checked Claude’s reasoning.

By A Reddit user on Reddit · Posted · Added Oct 16, 2026

Difficulty
IntermediateOur rating
Time to build
Not reportedOur estimate
Monthly cost
Not reported
Revenue
Not reportedWe only show revenue the source states
Engagement
No public countThe source shows no number

What they did

Claude did the work; ChatGPT worked separately from the same documents and audited the result.

How it went

The cross-check caught transcription, rounding and substantive errors. Licensed professionals reviewed and filed.

Worth knowing

Keep a professional in the loop for anything you file.

Builder recipe

Our own starting point, written from the source. Adapt it to your setup.

Stack

  • Claude
  • ChatGPT
  • Source documents

Steps

  1. Connect or export your financial data.
  2. Have the agent categorize and summarize it.
  3. Check the numbers against your statements.
  4. Schedule recurring reports.

Starter prompt

Independently recompute every figure in this tax workpaper from the attached source documents. List each mismatch with the document and line it comes from.

Tags

Read the original

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