Function get3PFallbackSuggestion

src/utils/model/validateModel.ts:152–167

* Suggest a fallback model for 3P users when the selected model is unavailable.

(model: string)

 * Suggest a fallback model for 3P users when the selected model is unavailable.
 */
function get3PFallbackSuggestion(model: string): string | undefined {
  if (getAPIProvider() === 'firstParty') {
    return undefined
  }
  const lowerModel = model.toLowerCase()
  if (lowerModel.includes('opus-4-6') || lowerModel.includes('opus_4_6')) {
    return getModelStrings().opus41
  }
  if (lowerModel.includes('sonnet-4-6') || lowerModel.includes('sonnet_4_6')) {
    return getModelStrings().sonnet45
  }
  if (lowerModel.includes('sonnet-4-5') || lowerModel.includes('sonnet_4_5')) {
    return getModelStrings().sonnet40
  }
  return undefined
}