{"schemaVersion":"1.0","source":"The Workflow Finder","sourceUrl":"https://www.theworkflowfinder.com","license":"Free to use with attribution and a link to the cited page","generated":"2026-08-28","workflow":{"title":"Build an Automatic Model Failover System So One API Outage Never Takes Down Your App","slug":"build-an-automatic-model-failover-system-for-api-outages","url":"https://www.theworkflowfinder.com/workflows/build-an-automatic-model-failover-system-for-api-outages","description":"Keep your app running when a model provider goes down, in about 3 hours of setup.","difficulty":"Advanced","timeEstimate":"3 hours, one-time setup","schemaDuration":"PT3H","expectedResult":"A production app that automatically fails over to a backup model when the primary provider errors out, with an alert the moment that happens.","tags":["Models","Infrastructure","Reliability"]},"steps":[{"position":1,"title":"Identify Your Single Points of Failure","instructions":"Audit which production features call one model or provider directly with no backup path if that call fails.","input":"Workflow inputs: the topic, goal, or raw materials the user is starting from.","output":"Handoff artifact consumed by Step 2 (\"Configure a Fallback Chain in LiteLLM\").","ioProvenance":{"input":"structural","output":"structural"},"toolSlots":[]},{"position":2,"title":"Configure a Fallback Chain in LiteLLM","instructions":"Set a fallbacks list in your LiteLLM proxy config so a failed call to your primary model automatically retries against a specified backup model once your configured retry count is exhausted.","input":"Output of Step 1 (\"Identify Your Single Points of Failure\").","output":"Handoff artifact consumed by Step 3 (\"Route Every Call Through the Proxy\").","ioProvenance":{"input":"structural","output":"structural"},"toolSlots":[{"slug":"litellm","name":"LiteLLM","url":"https://www.theworkflowfinder.com/tools/litellm","category":"Developer Tools","pricing":"free","capabilities":["API integration"]}]},{"position":3,"title":"Route Every Call Through the Proxy","instructions":"Point your application's base URL at the LiteLLM proxy instead of calling providers directly, so the fallback chain and per-user rate limits apply without touching every call site in your code.","input":"Output of Step 2 (\"Configure a Fallback Chain in LiteLLM\").","output":"Handoff artifact consumed by Step 4 (\"Monitor for Fallbacks Firing\").","ioProvenance":{"input":"structural","output":"structural"},"toolSlots":[{"slug":"litellm","name":"LiteLLM","url":"https://www.theworkflowfinder.com/tools/litellm","category":"Developer Tools","pricing":"free","capabilities":["API integration"]}]},{"position":4,"title":"Monitor for Fallbacks Firing","instructions":"Watch Helicone's per-model error-rate and request-volume views so a spike on your primary model, and a matching spike on the backup, tells you about an outage before customers report it.","input":"Output of Step 3 (\"Route Every Call Through the Proxy\").","output":"Handoff artifact consumed by Step 5 (\"Know What Doesn't Transfer\").","ioProvenance":{"input":"structural","output":"structural"},"toolSlots":[{"slug":"helicone","name":"Helicone","url":"https://www.theworkflowfinder.com/tools/helicone","category":"Developer Tools","pricing":"freemium","capabilities":["API integration"]}]},{"position":5,"title":"Know What Doesn't Transfer","instructions":"A backup model rarely matches your primary model's exact tone or output format, so test your fallback model against the same prompts beforehand rather than discovering the mismatch during a live outage. Fallbacks also add latency, since a failed attempt has to time out before the backup fires, and they don't protect you from a correlated outage across multiple providers at once.","input":"Output of Step 4 (\"Monitor for Fallbacks Firing\").","output":"Final workflow output: A production app that automatically fails over to a backup model when the primary provider errors out, with an alert the moment that happens.","ioProvenance":{"input":"structural","output":"structural"},"toolSlots":[]}]}