# Cite this index — The Agent Pricing Index

*IgnatiusTheYoungerAI · 47 products · CC BY 4.0 · human page: https://ignatiustheyoungerai.com/pricing-index/cite · built 2026-09-19*

## How to cite

Nathan Battin (2026). The Agent Pricing Index: list prices of 47 AI agents and models, read from vendor pages. IgnatiusTheYoungerAI. https://ignatiustheyoungerai.com/pricing-index — dataset https://ignatiustheyoungerai.com/pricing-index/agent-pricing-index.json, rows verified 2026-09-08 and 2026-09-18. CC BY 4.0.

One row: cite the product, its `verified_date` and its `source_url`.

```bibtex
@misc{battin2026agentpricingindex,
  author       = {Battin, Nathan},
  title        = {The Agent Pricing Index: list prices of 47 AI agents and models, read from vendor pages},
  year         = {2026},
  publisher    = {IgnatiusTheYoungerAI},
  howpublished = {\url{https://ignatiustheyoungerai.com/pricing-index}},
  note         = {Dataset: https://ignatiustheyoungerai.com/pricing-index/agent-pricing-index.json. Rows verified 2026-09-08 and 2026-09-18. CC BY 4.0.}
}
```

```json
{
  "@context": "https://schema.org",
  "@type": "Dataset",
  "name": "The Agent Pricing Index",
  "description": "List prices of 47 AI agents and models across 7 categories, read verbatim from each vendor's own pricing page on a dated pass. One row per product; null means the vendor publishes nothing.",
  "url": "https://ignatiustheyoungerai.com/pricing-index",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "creator": {
    "@type": "Person",
    "name": "Nathan Battin",
    "affiliation": "IgnatiusTheYoungerAI"
  },
  "publisher": {
    "@type": "Organization",
    "name": "IgnatiusTheYoungerAI",
    "url": "https://ignatiustheyoungerai.com"
  },
  "distribution": [
    {
      "@type": "DataDownload",
      "encodingFormat": "application/json",
      "contentUrl": "https://ignatiustheyoungerai.com/pricing-index/agent-pricing-index.json"
    },
    {
      "@type": "DataDownload",
      "encodingFormat": "application/json",
      "contentUrl": "https://api.ignatiustheyoungerai.com/v1/pricing/index"
    }
  ],
  "temporalCoverage": "2026-09-08/2026-09-18",
  "dateModified": "2026-09-19",
  "isAccessibleForFree": true
}
```

## What a row carries

- `source_url` — the vendor's own page. No URL, no entry.
- `verified_date` — the day a human read it. A row is a claim about one vendor on one day.
- evidence quote — the vendor's words, verbatim, from that page on that day.
- `label` — OBSERVED (a price was read) or ABSENT (the page publishes none). Never MODELED.
- `null` — the vendor publishes nothing. A finding, never filled with a guess.
- `entry_usd_month: 0` — a sentinel (no platform fee), excluded from floors and averages.
- `unit_price_derived: true` — IY computed it from a plan price and an included quantity; arithmetic at https://ignatiustheyoungerai.com/pricing-index/units.
- `usage_unit` — what the vendor counts. Do not compare across units.
- `enterprise_contact_sales` — the top tier is gated; distinct from publishing nothing.

## The record

Corrections publish with their date; a row is never edited in place. Right of reply: hello@ignatiustheyoungerai.com. Removal: "A vendor may ask to be removed. The row comes down and the index records only that a row was withdrawn at the vendor's request, with the date." Two measures kept apart: 9 of 47 publish no price at all; 36 of 47 gate an enterprise tier. No vendor pays for inclusion, placement or rating.

## The API

- `GET https://api.ignatiustheyoungerai.com/v1/pricing/index` — the full dataset, free
- `GET https://api.ignatiustheyoungerai.com/v1/pricing/aggregates` — counts and floors, free
- `POST https://api.ignatiustheyoungerai.com/v1/pricing/submit` — submit a price or a correction, free
- `GET https://api.ignatiustheyoungerai.com/v1/pricing` — per-query on the machine-payable rail (HTTP 402, Stripe MPP), $0.50

File of record: https://ignatiustheyoungerai.com/pricing-index/agent-pricing-index.json

## What it is not

List price only. 47 rows chosen for category leadership, not breadth; no category averages. A dated snapshot with dated re-reads. USD only.

## Who wrote it

Nathan Battin, founder of IgnatiusTheYoungerAI — a pricing and corporate-strategy operator. Verify the artifact, not the claim.