Calculate the cost of one LLM request - Narev Docs

Price one request when you know the model, provider, and token counts. The Pricing API returns a dollar total. No SDK required.

Request body

curl -X POST 'https://api.narev.ai/v1/traces/cost' \
  -H 'Content-Type: application/json' \
  -d '{
    "model_id": "gpt-4o",
    "provider_id": "openai",
    "usage": {
      "prompt_tokens": 1200,
      "completion_tokens": 340
    }
  }'

Response

{
  "model_id": "gpt-4o",
  "provider_id": "openai",
  "cost_breakdown": {
    "total": 0.0064
  }
}

Read cost_breakdown.total as USD for that single call.

Optional usage fields

Include cache and reasoning token counts when your workload uses them:

"usage": {
  "prompt_tokens": 1200,
  "completion_tokens": 340,
  "cache_read_tokens": 0,
  "cache_write_tokens": 0,
  "reasoning_tokens": 0
}

Compare models fairly

Reuse the same usage object across models. That isolates rate differences from prompt or output length changes. See Compare cost between two models.

API reference

POST /v1/traces/cost