TypeScript SDKAPI ReferenceModels

MessagesFallbackParam - TypeScript SDK

MessagesFallbackParam type definition

The TypeScript SDK and docs are currently in beta. Report issues on GitHub.

Fallback model to try when the primary model fails or refuses. Only the model field is supported; per-attempt overrides are rejected.

Example Usage

1import { MessagesFallbackParam } from "@openrouter/sdk/models";
2
3let value: MessagesFallbackParam = {
4  model: "claude-opus-4-8",
5};

Fields

FieldTypeRequiredDescriptionExample
modelstring✔️N/A
additionalPropertiesRecord<string, *any*>➖N/A{"model": "claude-opus-4-8"}