Function toAnthropicModelId

common/src/constants/anthropic.ts:52–68

(openrouterModel: string)

 * Throws if the model has a non-anthropic provider prefix.
 */
export function toAnthropicModelId(openrouterModel: string): string {
  // Already an Anthropic model ID (no provider prefix)
  if (!openrouterModel.includes('/')) {
    return openrouterModel
  }

  if (!openrouterModel.startsWith('anthropic/')) {
    throw new Error(
      `Cannot convert non-Anthropic model to Anthropic model ID: ${openrouterModel}`,
    )
  }

  return (
    OPENROUTER_TO_ANTHROPIC_MODEL_MAP[openrouterModel] ??
    openrouterModel.replace('anthropic/', '')
  )
}