# LLM API Cost Calculator

> A free, individually verified dataset of LLM API list prices — 317 models across 27 providers, each checked against the provider's own pricing page. All prices are USD per 1,000,000 tokens. Last verified 2026-08-30. Licensed CC BY 4.0.

## Dataset
- [Full pricing dataset](https://is.kluuz.de/pricing.json): every model and provider — input, output and cache prices, context window, tier, plus the source URL and verification date behind each entry. Also served at /llm-pricing.json.
- [Price change log (JSON)](https://is.kluuz.de/llm-pricing-changes.json): what moved between verifications — price deltas, models added, models removed.
- [Price change feed (Atom)](https://is.kluuz.de/feed.xml): one entry per verification that changed a price; subscribe once, no signup, no key.
- [Dated snapshot index](https://is.kluuz.de/history/index.json): 3 dated snapshots, one per verification, at /history/<date>.json — from 2026-08-28 to 2026-08-30.
- [Historical prices (JSON)](https://is.kluuz.de/price-history.json): 255 dated list-price observations reaching back before this site existed, reconstructed from provider announcements and timestamped Internet Archive snapshots of pricing pages. Every observation carries the source URL and a quote locating the figure on it. Rendered at /price-history.
- [API documentation](https://is.kluuz.de/api): every endpoint above, with units, update cadence and curl examples.

## Pages
- [All models](https://is.kluuz.de/models): every model priced and linked; one page per model at /models/<model-id>.
- [Providers](https://is.kluuz.de/providers/anthropic): one page per provider at /providers/<provider-id>, e.g. /providers/anthropic.
- [Head-to-head comparisons](https://is.kluuz.de/compare): same-tier models compared across providers, at /compare/<model-a>-vs-<model-b>.
- [Where to run open models](https://is.kluuz.de/hosting): the same open weights priced across every host that serves them, at /hosting/<family>.
- [Price change log](https://is.kluuz.de/pricing-changes): the human-readable, dated record behind the JSON feed above.

## Licence
- [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/): required attribution is a link to https://is.kluuz.de/. Prices change and are provided as-is with no warranty — check the source URL carried on each entry before relying on it.
- [Full terms](https://github.com/klausholland/income-system/blob/main/LICENSE-DATA.md): the complete data licence.