Responses and usage

{
  "id": "chatcmpl-req_tVJMBaXIcyDHuiQT2Ljh8WAG",
  "object": "chat.completion",
  "created": 1793729613,
  "model": "deepseek-v4.1-flash:cached",
  "choices": [
    {
      "index": 0,
      "message": { "role": "assistant", "content": "Halo!" },
      "logprobs": null,
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 4,
    "total_tokens": 13,
    "prompt_tokens_details": { "cached_tokens": 0 }
  }
}

• id is chatcmpl- followed by the request ID, the same value as the x-request-id header. In a stream every chunk carries the same id.
• model is the lane that answered. When you sent a renamed ID, it is the current ID. Through a combo, it is the lane that served the request.
• message has content, reasoning_content when the model reasoned (see Reasoning), and tool_calls when it called a function.
• logprobs is null unless you asked for it on a lane that returns it (see lane differences).

• stop: the model finished, or reached one of your stop strings.
• length: the output reached max_tokens. The text is cut off, so JSON output may not parse.
• tool_calls: the model wants your code to run the functions in tool_calls.

• prompt_tokens counts all input: messages, tool definitions, and images.
• prompt_tokens_details.cached_tokens is the part of the input served from the model's cache. It is billed at the cached rate. Cache hits are not guaranteed; they come when a request repeats the start of a recent one.
• completion_tokens counts all output, reasoning included. Reasoning tokens are not reported separately, because not every lane reports them.
• With reasoning on, prompt_tokens is a little higher for the same messages (16 tokens became 42 in one test), because the model's template adds instructions.

Worg multiplies each kind of token by the lane's price per 1M tokens and rounds the sum up to a whole micro-dollar (US$0.000001). New input isprompt_tokens minus cached_tokens. The price is the one in force when the request ran, and it is recorded with the request.

Example: a request on deepseek-v4.1-flash:cached with a long document in the system message, sent a second time a few seconds after the first. 5,774 of its 6,277 prompt tokens came from the cache.

Prices read from the API when this page was built. Current prices: Models and pricing.

• Requests refused before a lane is called, and requests the model rejects, are not billed.
• If a lane sends no usage, Worg bills an estimate: the input at the bound used for the cost hold, and one output token per 3 bytes of generated text.
• Every request appears in the console under Usage with its tokens and cost.

• x-request-id on every chat completion response, errors included, except 401 and 413 body_too_large. Send it when you contact support.
• retry-after, in seconds, on 429 responses. See Retries.