---
title: "The LLM Price Index — one citeable number for the cost of frontier inference."
method: GET
path: "/api/v1/price-index.json"
tags: ["Rankings"]
---

# The LLM Price Index — one citeable number for the cost of frontier inference.

`GET /api/v1/price-index.json`

## Request

- Base URL: `https://modelpricewatch.com`
- URL: `https://modelpricewatch.com/api/v1/price-index.json`
- Auth: one of:
  - none
  - API key in header `X-API-Key`

## Response `200`

Current index value, series and events.

- PriceIndex
  - `name` string
  - `value` number
  - `unit` string
  - `asOf` string, date
  - `blendRatio` string
  - `weighting` string
  - `method` string
  - `change` object
  - `series` object[]
  - `events` object[]
  - `citation` string

## Other responses

- `429`: Daily request limit for the tier exceeded.

---

[API](https://skmtc.dev/modelpricewatch/apis/model-price-watch-api.md) · [All operations](https://skmtc.dev/modelpricewatch/apis/model-price-watch-api/llms.txt) · [OpenAPI document](https://skmtc.dev/modelpricewatch/apis/model-price-watch-api/revisions/795a15aa2516?raw)