Function buildThinkingConfig

apps/sim/providers/anthropic/core.ts:118–150

* Builds the thinking configuration for the Anthropic API based on model capabilities and level. * * - Fable 5, Sonnet 5, Opus 4.8, Opus 4.7: Uses adaptive thinking only (no extended thinking support) * - Opus 4.6, Sonnet 4.6: Uses adaptive thinking with effort parameter * - Other models: Uses b

(
  modelId: string,
  thinkingLevel: string
)

 * Returns both the thinking config and optional output_config for adaptive thinking.
 */
function buildThinkingConfig(
  modelId: string,
  thinkingLevel: string
): {
  thinking: { type: 'enabled'; budget_tokens: number } | { type: 'adaptive' }
  outputConfig?: { effort: string }
} | null {
  const capability = getThinkingCapability(modelId)
  if (!capability || !capability.levels.includes(thinkingLevel)) {
    return null
  }

  // Models with effort support use adaptive thinking
  if (supportsAdaptiveThinking(modelId)) {
    return {
      thinking: { type: 'adaptive' },
      outputConfig: { effort: thinkingLevel },
    }
  }

  // Other models use budget_tokens-based extended thinking
  const budgetTokens = THINKING_BUDGET_TOKENS[thinkingLevel]
  if (!budgetTokens) {
    return null
  }

  return {
    thinking: {
      type: 'enabled',
      budget_tokens: budgetTokens,
    },
  }
}

/**
 * The Anthropic SDK requires streaming for non-streaming requests when max_tokens exceeds