One API key across OpenAI, Claude and Gemini: how to compare token cost per model

Bottom line: if you want one API key across OpenAI, Claude and Gemini and you're choosing mainly on...

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Lesson 4 - Validation: A must-have cornerstone

In a traditional app, QA validates repeatable behavior. When a model is doing the work, the behavior isn't repeatable, so validation has to live inside the app from day one. I lear...