Step 1: Check the criteria that matter most
Start with the basics: does the provider expose an OpenAI-compatible API, does it document the base URL clearly, and is the request format straightforward enough for your existing SDKs? A strong API中转站 should make migration simple, not force a rewrite.
Look for these criteria:
- Compatibility: standard chat and completion-style requests should work with minimal changes.
- Pricing model: usage-based billing can be easier to manage than fixed packages, especially if you want GPT API便宜 in a predictable way.
- Latency and stability: the relay should stay responsive under normal traffic and return clear errors when upstream models are busy.
- Documentation: setup notes, example headers, and model names should be easy to find.