Function modelSupportsAutoMode

src/utils/betas.ts:160–195

(model: string)

// @[MODEL LAUNCH]: Add the new model if it supports auto mode (specifically PI probes) — ask in #proj-claude-code-safety-research.
export function modelSupportsAutoMode(model: string): boolean {
  if (feature('TRANSCRIPT_CLASSIFIER')) {
    const m = getCanonicalName(model)
    // External: firstParty-only at launch (PI probes not wired for
    // Bedrock/Vertex/Foundry yet). Checked before allowModels so the GB
    // override can't enable auto mode on unsupported providers.
    if (process.env.USER_TYPE !== 'ant' && getAPIProvider() !== 'firstParty') {
      return false
    }
    // GrowthBook override: tengu_auto_mode_config.allowModels force-enables
    // auto mode for listed models, bypassing the denylist/allowlist below.
    // Exact model IDs (e.g. "claude-strudel-v6-p") match only that model;
    // canonical names (e.g. "claude-strudel") match the whole family.
    const config = getFeatureValue_CACHED_MAY_BE_STALE<{
      allowModels?: string[]
    }>('tengu_auto_mode_config', {})
    const rawLower = model.toLowerCase()
    if (
      config?.allowModels?.some(
        am => am.toLowerCase() === rawLower || am.toLowerCase() === m,
      )
    ) {
      return true
    }
    if (process.env.USER_TYPE === 'ant') {
      // Denylist: block known-unsupported claude models, allow everything else (ant-internal models etc.)
      if (m.includes('claude-3-')) return false
      // claude-*-4 not followed by -[6-9]: blocks bare -4, -4-YYYYMMDD, -4@, -4-0 thru -4-5
      if (/claude-(opus|sonnet|haiku)-4(?!-[6-9])/.test(m)) return false
      return true
    }
    // External allowlist (firstParty already checked above).
    return /^claude-(opus|sonnet)-4-6/.test(m)
  }
  return false
}

/**
 * Get the correct tool search beta header for the current API provider.