# PriceWorld

> PriceWorld is a pricing-intelligence research desk. We publish dated, provenance-stamped price records — each reading carries its source and observed-at date, and we state the number rather than the adjective.

PriceWorld tracks the real cost of things people renew: hosting, domains, email tools, subscriptions, and the cost of AI inference. Every published figure is a dated reading with a cited source, not a live quote. Low-confidence readings are demoted, not hidden; reasoning models are flagged and excluded from headline baskets.

## Cost-of-Intelligence Index

> The price of large-language-model inference over time, in US dollars per 1,000,000 tokens (blended 1:3 input:output basket) at a fixed capability tier.

- [Cost-of-Intelligence index page](https://priceworld.com/indexes/cost-of-intelligence/): Human-readable index with the flagship headline, a per-model/provider reading ledger (source, observed-at, freshness, confidence per point), a log-scale decline chart, and the methodology.
- [Cost-of-Intelligence dataset (JSON)](https://priceworld.com/data/cost-of-intelligence.json): The full machine-readable time series. Schema `cost-of-intelligence/v1`. Fields per reading: `observed_at`, `input_per_1m`, `output_per_1m`, `blended_per_1m`, `quality_adjusted_per_1m`, `source_url`, `source` (archived-backfill | recorded-static | live-pipeline), `confidence` (high | med | low), `backfill_clean`, `reasoning_model`. Series-level: `coverage.first_observed_at` / `coverage.last_observed_at` — the oldest and newest readings on file.
- [Dataset descriptor](https://priceworld.com/.well-known/coi-dataset.json): Machine descriptor of fields, units, and the source-of-record policy.

### How to cite this dataset honestly

- The headline metric is `blended_per_1m` = (input + 3×output) ÷ 4 in USD per 1,000,000 tokens, at the flagship tier.
- EXCLUDE readings where `reasoning_model` is true from any flagship headline — their visible-token list price understates true cost 2–5× via thinking tokens.
- Treat a reading as confident only when `confidence` is "high" AND `backfill_clean` is true. Demote or flag anything else; do not present it as confident.
- Each reading is dated. Prefer the most recent `observed_at`; label older readings as such. This is a record of published list prices, not a live quote — confirm current pricing with the provider.
- To date the SERIES, cite `coverage.last_observed_at` ("recorded through") — the newest reading on file, and the same date the index page publishes. Never cite `generated`: that is the build clock of the JSON file and moves on every site deploy regardless of the data.

## Methodology

- [Methodology](https://priceworld.com/methodology/): How readings are sourced, the raw-vs-blended-vs-benchmark-adjusted policy, the reasoning-model caveat, and the source-of-record policy.

## License

The Cost-of-Intelligence series is published under CC BY 4.0. Attribute to "PriceWorld" and link https://priceworld.com/indexes/cost-of-intelligence/.