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04 / FALLBACK UPSTREAM

Evaluate an AI API fallback upstream, without moving your main route.

For AI tools, developer products, and downstream sites that need another OpenAI-compatible endpoint. Start with one real use case, your own account, and a small paid test.

About 6 minutesAI gateway / fallback upstreamUpdated 2026-08-03

1. Define what the fallback must do

A fallback is useful only when it solves a concrete problem: a second route for a developer tool, a model your current provider does not expose, or a way to test a different billing path. Do not treat a landing page, a registration, or a successful health check as proof that the route fits your workload.

Write downExample check
ProductWhich tool, API, or downstream site will call it?
ModelWhich one model matters for the first test?
BudgetWhat is the smallest paid test you can explain?
Pass conditionRequest, usage log, and billing record match.

2. Keep access under your control

  1. Register your own account at the provider.
  2. Complete any payment yourself and create your own API key.
  3. Set the OpenAI-compatible Base URL to https://api.lashimao.xyz/v1.
  4. Use the model name shown in your current console, not a copied or stale list.
fallback-upstream.json
{
  "base_url": "https://api.lashimao.xyz/v1",
  "api_key": "sk-your-own-key",
  "model": "your-console-model"
}

3. Run one small paid test

Use a short request from the workload you actually care about. Record only the minimum evidence needed to review the result:

  • The request returns the expected model response.
  • Your application or gateway shows the matching request log.
  • Your provider console shows an understandable balance or charge change.
  • The same test can be repeated without sharing a password or complete API key.
A low public multiplier is a starting point, not a final bill.

The public page currently shows a uniform 0.1 multiplier, including volume purchases. Check the actual model, usage and charge in your own console.

4. Decide whether to keep the route

Keep the endpoint as a fallback or supplement only when the request, log, and billing result are all clear for your workload. Increase traffic gradually. A single successful request does not establish production reliability, capacity, recurring revenue, or a service-level guarantee.

Start with one controlled request.

Register, check the current console, and verify the route before making a larger change.

Register and test