Function getModelOptionsBase

src/utils/model/modelOptions.ts:331–453

(fastMode = false)

// @[MODEL LAUNCH]: Update the model picker lists below to include/reorder options for the new model.
// Each user tier (ant, Max/Team Premium, Pro/Team Standard/Enterprise, PAYG 1P, PAYG 3P) has its own list.
function getModelOptionsBase(fastMode = false): ModelOption[] {
  const session = getCurrentSubscriptionSessionState()

  if (isInternalBuild()) {
    // Build options from antModels config
    const antModelOptions: ModelOption[] = getAntModels().map(m => ({
      value: m.alias,
      label: m.label,
      description: m.description ?? `[NOUMENA-ONLY] ${m.label} (${m.model})`,
    }))

    return dedupeModelOptions([
      getDefaultOptionForUser(),
      ...getNCodeManagedModelOptions(),
      ...antModelOptions,
      getMergedOpus1MOption(fastMode),
      getSonnet46Option(),
      getSonnet46_1MOption(),
      getHaiku45Option(),
    ])
  }

  if (isOpenAICompatByokActive()) {
    return getOpenAICompatByokModelOptions()
  }

  if (isNCodeManagedFirstPartySurface()) {
    return dedupeModelOptions([
      getDefaultOptionForUser(fastMode),
      ...getNCodeManagedModelOptions(),
    ])
  }

  if (session.isOauthBackedFirstPartySession) {
    if (session.isMaxSubscriber || session.isTeamPremiumSubscriber) {
      // Max and Team Premium users: Opus is default, show Sonnet as alternative
      const premiumOptions = [getDefaultOptionForUser(fastMode)]
      if (!isOpus1mMergeEnabled() && checkOpus1mAccess()) {
        premiumOptions.push(getMaxOpus46_1MOption(fastMode))
      }

      premiumOptions.push(MaxSonnet46Option)
      if (checkSonnet1mAccess()) {
        premiumOptions.push(getMaxSonnet46_1MOption())
      }

      premiumOptions.push(...getNCodeManagedModelOptions())
      premiumOptions.push(MaxHaiku45Option)
      return premiumOptions
    }

    // Pro/Team Standard/Enterprise users: Sonnet is default, show Opus as alternative
    const standardOptions = [getDefaultOptionForUser(fastMode)]
    if (checkSonnet1mAccess()) {
      standardOptions.push(getMaxSonnet46_1MOption())
    }

    if (isOpus1mMergeEnabled()) {