顾问工具现在支持max_tokens参数，用于限制每次调用时顾问模型的输出，从而减少不需要完整长度顾问响应的工作负载的延迟和输出令牌成本。

顾问工具现在支持max_tokens参数，用于限制每次调用时顾问模型的输出长度，从而减少不需要完整顾问响应的任务的延迟和输出token成本。在顾问工具定义中设置tools[].max_tokens；参见《限制顾问输出》。在Claude API中，当请求返回stop_reason: "refusal"且Claude未生成任何输出时，您将不再被计费。参见《流式拒绝》以检测和处理拒绝情况。

The advisor tool now supports a max_tokens parameter to cap the advisor model's output per call, reducing latency and output token cost for workloads that don't need full-length advisor responses. Set tools[].max_tokens on the advisor tool definition; see Capping advisor output. On the Claude API, you are no longer billed for a request when it returns stop_reason: "refusal" without Claude having generated any output. See Streaming refusals for detecting and handling refusals.