Same prompt. Same code. Different output weeks later. Was it the model or my code? Built a small tool to answer this: python examples/model_drift_detector.

Same prompt. Same code. Different output weeks later. Was it the model or my code? Built a small tool to answer this: python examples/model_drift_detector.py If the provider changed behavior between runs: STATUS=CHANGED rc=2 INTERPRETATION=Same request produced a different response → The change came from the model, not your code. Works offline. No SaaS. Request + response hashes stored in a tamper-evident bundle. pip install aelitium