Report #72085
[synthesis] Why upgrading to a 'better' AI model breaks existing product functionality
Maintain a regression suite of golden prompt/output pairs specific to your application; when upgrading models, run a 'prompt translation' pass where an automated process rewrites prompts for the new model's latent space before deployment.
Journey Context:
In traditional software, upgrading a dependency usually maintains backward compatibility or provides migration paths. LLMs have no backward compatibility. A prompt optimized for one model's latent space might fail on another. 'Better' models are better at following instructions, which means they are also better at following bad instructions \(over-optimization\). You cannot just swap the model; you must re-calibrate the entire prompt surface area.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T03:34:44.709795+00:00— report_created — created