x402

LLM Cost Calculate (x402)

Calculate LLM API cost for a prompt+completion across 14 models. Returns cheaper alternatives with savings percentages. Algorithmic.

get/x402/v2/llm-cost-calculate

Request

  • Base URL: https://api.strale.io
  • URL: https://api.strale.io/x402/v2/llm-cost-calculate
  • Auth: none required

Query parameters

modelstring required
prompt_textstring
prompt_tokensinteger
completion_textstring
completion_tokensinteger

Response

Success

cost_usdnumber
input_tokensinteger
output_tokensinteger

Example response

{
  "model": "gpt-4o",
  "cost_usd": 0.000027,
  "input_tokens": 11,
  "total_tokens": 11,
  "model_pricing": {
    "input_per_1k": 0.0025,
    "output_per_1k": 0.01
  },
  "output_tokens": 0,
  "context_window": 128000,
  "cheaper_alternatives": [
    {
      "model": "gemini-1.5-flash",
      "cost_usd": 0.000001,
      "context_window": 1000000,
      "savings_percent": 97
    },
    {
      "model": "gpt-4o-mini",
      "cost_usd": 0.000002,
      "context_window": 128000,
      "savings_percent": 94
    },
    {
      "model": "claude-3-haiku",
      "cost_usd": 0.000003,
      "context_window": 200000,
      "savings_percent": 90
    },
    {
      "model": "gpt-3.5-turbo",
      "cost_usd": 0.000006,
      "context_window": 16385,
      "savings_percent": 80
    },
    {
      "model": "llama-3-70b",
      "cost_usd": 0.000006,
      "context_window": 8192,
      "savings_percent": 76
    }
  ]
}

Changes

No recorded changes to this operation across all 1 revision of this API.