A single quality score can hide the failure that matters most in a financial workflow. Tests should separate retrieval errors from calculation errors. Policy violations and unsupported statements need their own labels. This FinTech AI evaluation approach helps define failures by their operational consequence. Test ordinary and ambiguous requests. Then add stale records plus attempts to bypass permissions. https://ai-software-development.net Release gates need a documented response for each failure class. Some outputs can be corrected automatically, while others should stop the workflow and request review. A financial AI development plan should keep model updates reversible and preserve enough context to reproduce a failed decision without retaining unnecessary personal data.