Free LLM Pricing API

Every model and price on this site is published as an openly-licensed dataset. No API key, no rate limit, no signup. Use it in your app, your spreadsheet, your blog post, your research paper. Licensed under CC BY 4.0 — just link back to llmcalculator.net.

Endpoints

PathFormatReturns
/api/models.jsonJSONAll current models with input/output/context
/api/models.csvCSVSame data as a spreadsheet-ready CSV
/llm-pricing-historyHTML / dataHistorical pricing 2023–2026 (citable dataset)

CORS is open (Access-Control-Allow-Origin: *) so you can fetch from the browser.

Sample response

GET /api/models.json

{
  "updated": "2026-06-25",
  "currency": "USD",
  "unit": "per_1m_tokens",
  "models": [
    {
      "id": "gpt-5.5",
      "provider": "openai",
      "name": "GPT-5.5",
      "input": 1.25,
      "output": 10,
      "context": 400000
    },
    {
      "id": "claude-sonnet-4-6",
      "provider": "anthropic",
      "name": "Claude Sonnet 4.6",
      "input": 3,
      "output": 15,
      "context": 1000000
    },
    {
      "id": "gemini-3-1-pro",
      "provider": "google",
      "name": "Gemini 3.1 Pro",
      "input": 1.25,
      "output": 10,
      "context": 2000000
    },
    {
      "id": "deepseek-v4-flash",
      "provider": "deepseek",
      "name": "DeepSeek V4 Flash",
      "input": 0.07,
      "output": 0.27,
      "context": 128000
    }
  ]
}

Quick examples

cURL
curl https://llmcalculator.net/api/models.json
JavaScript
const r = await fetch("https://llmcalculator.net/api/models.json");
const { models } = await r.json();
const cheapest = models.sort((a,b) => a.input - b.input)[0];
Python
import requests
models = requests.get("https://llmcalculator.net/api/models.json").json()["models"]
print(sorted(models, key=lambda m: m["input"])[0])

Attribution

If you use this data, please credit:

Source: LLMCalculator.net — https://llmcalculator.net (CC BY 4.0)