What does the 'max_tokens' parameter control in the Claude API?
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Short Explanation
You set max_tokens to cap how long Claude's reply can be, like telling a writer 'keep it under 500 words.' It limits the response length, not the length of your prompt.
Full Explanation
The max_tokens parameter sets an upper bound on the number of tokens Claude generates in its response. Claude will stop generating when it reaches this limit or naturally completes its response, whichever comes first. This is critical for cost control and latency management. The statement about the maximum number of input tokens allowed in the request is wrong because input token limits are governed by the model's context window, not max_tokens. The statement about the total budget of tokens available per month is wrong because that describes usage limits or billing caps, which are account-level settings in the Anthropic Console. The statement about the minimum number of tokens required for a valid response is wrong because there is no minimum token parameter; Claude can generate a single token if appropriate.