Function isLegacyOpusFirstParty

src/utils/model/model.ts:545–547

(model: string)

]

function isLegacyOpusFirstParty(model: string): boolean {
  return LEGACY_OPUS_FIRSTPARTY.includes(model)
}

/**
 * Opt-out for the legacy Opus 4.0/4.1 → current Opus remap.