AI API Integration Testing Checklist for Multi-Model Apps

A single successful AI API request is not enough for production.

If your app uses GPT, Claude, Gemini, DeepSeek, Qwen, or other models through one OpenAI-compatible API gateway, I think the integration should be tested as a system: configuration, SDK compatibility, model names, JSON output, latency, retries, fallback, and Postman verification.

I published the full checklist here:

https://github.com/yeallen441-del/vectorengine-quickstart/blob/main/AI_API_TESTING_CHECKLIST.md

What I test before shipping