MessagesFallbackParam - OpenRouter

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

Example Usage

import { MessagesFallbackParam } from "@openrouter/sdk/models";

let value: MessagesFallbackParam = {
  model: "claude-opus-4-8",
};

Field	Type	Required	Description	Example
`model`	string	:heavy_check_mark:	N/A
`additionalProperties`	Record<string, any>	:heavy_minus_sign:	N/A	{ “model”: “claude-opus-4-8” }