Function getModelFamilyInfo

src/utils/model/modelOptions.ts:462–501

* Map a full model name to its family alias and the marketing name of the * version the alias currently resolves to. Used to detect when a user has * a specific older version pinned and a newer one is available.

(
  model: string,
)

 * a specific older version pinned and a newer one is available.
 */
function getModelFamilyInfo(
  model: string,
): { alias: string; currentVersionName: string } | null {
  const canonical = getCanonicalName(model)

  // Sonnet family
  if (
    canonical.includes('claude-sonnet-4-6') ||
    canonical.includes('claude-sonnet-4-5') ||
    canonical.includes('claude-sonnet-4-') ||
    canonical.includes('claude-3-7-sonnet') ||
    canonical.includes('claude-3-5-sonnet')
  ) {
    const currentName = getMarketingNameForModel(getDefaultFlashModel())
    if (currentName) {
      return { alias: 'Balanced', currentVersionName: currentName }
    }
  }

  // Opus family
  if (canonical.includes('claude-opus-4')) {
    const currentName = getMarketingNameForModel(getDefaultOpusModel())
    if (currentName) {
      return { alias: 'Reasoning', currentVersionName: currentName }
    }
  }

  // Haiku family
  if (
    canonical.includes('claude-haiku') ||
    canonical.includes('claude-3-5-haiku')
  ) {
    const currentName = getMarketingNameForModel(getDefaultHaikuModel())
    if (currentName) {
      return { alias: 'Fast', currentVersionName: currentName }
    }
  }

  return null
}

/**
 * Returns a ModelOption for a known Anthropic model with a human-readable