GPT Migrator
Troubleshooting, testing and FAQs

Regression testing a replacement bot after model updates

Last checked October 18, 2026
Short answerWhenever the model, instructions, files or settings change, rerun the same test set and compare to the last passing results. Keep a log so you can see what changed.

When to retest

How

  1. Keep your test set and the last accepted answers in a sheet.
  2. Run the set and record new answers.
  3. Mark differences as better, same or worse.
  4. Investigate "worse" first; revert the change if needed.
  5. Update the log: date, what changed, result.

Define pass criteria: acceptance criteria. Pricing changes also matter: price comparison. Ongoing checks: monitoring.

Check your GPT before you move it

Paste your instructions, file names and Actions schema into the free checker. It runs in your browser and builds a portable bundle. Nothing is uploaded.

Open the free checker

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