Function buildOpenAIBody

web/src/llm-api/openai.ts:126–166

(
  body: ChatCompletionRequestBody,
  modelShortName: string,
)

}

function buildOpenAIBody(
  body: ChatCompletionRequestBody,
  modelShortName: string,
): Record<string, unknown> {
  const openaiBody: Record<string, unknown> = {
    ...body,
    model: modelShortName,
  }

  // Transform max_tokens to max_completion_tokens
  openaiBody.max_completion_tokens =
    openaiBody.max_completion_tokens ?? openaiBody.max_tokens
  delete openaiBody.max_tokens

  // Transform reasoning to reasoning_effort (not supported with function tools)
  const hasTools = Array.isArray(openaiBody.tools) && openaiBody.tools.length > 0
  if (openaiBody.reasoning && typeof openaiBody.reasoning === 'object') {
    const reasoning = openaiBody.reasoning as {
      enabled?: boolean
      effort?: 'high' | 'medium' | 'low'
    }
    if ((reasoning.enabled ?? true) && !hasTools) {
      openaiBody.reasoning_effort = reasoning.effort ?? 'medium'
    }
  }
  delete openaiBody.reasoning

  // OpenAI doesn't support reasoning_effort with function tools
  if (hasTools) {
    delete openaiBody.reasoning_effort
  }

  // Remove fields that OpenAI doesn't support
  delete openaiBody.stop
  delete openaiBody.usage
  delete openaiBody.provider
  delete openaiBody.transforms
  delete openaiBody.codebuff_metadata

  return openaiBody
}

/**
 * Convert credits (integer cents) back to a cost value that will result in the same