Morning notes: what I check before swapping LLM providers

I spent this morning reviewing a few Qwen / DeepSeek integration notes. The model quality discussion is useful, but most production problems I see are much more boring:

• does the SDK keep the same streaming behavior after a base URL swap?
• are tool calls normalized, or does each provider return a slightly different shape?
• can I see requested model, provider model, token usage, and timestamp for every request?
• if payment or regional access fails, is there a clean fallback path?

For small teams, “OpenAI-compatible” should mean more than the endpoint accepts a chat request. It should also mean the first failed request is easy to debug.

I’m keeping this as my checklist while testing mixed Chinese model access for global developers. If you are working with Qwen / DeepSeek / GLM / Kimi from outside China and have a non-sensitive failure case, I’d like to compare notes.

Beta sandbox I’m helping test: https://anlinkai.com/beta?source=devto&detail=devto_provider_swap_notes_20260518