About the Open Model Catalog

The Open Model Catalog is an open list of AI models, where you can call them and what they cost. It is part of the Open Model Gateway family: the gateway can import its exact price lines from omg-prices.json. Gateway documentation lives at docs.omg.bitop.dev.

Prices are stored as exact decimals with a source link, the time they were fetched and, for automated sources, the commit and file hash. Price history is append-only: a change adds a new entry and never rewrites an old one. An unknown price is left empty; it is never shown as zero.

These are published list prices, not invoices. Discounts, regional uplifts, priority or flex tiers and taxes can change what you pay. Check the provider's pricing page before relying on a number.

Licences

Code: MIT.
Catalog data (prices, limits, metadata and the JSON API): MIT, with attribution to the sources below, whose data is MIT licensed or factual price information. Keep this notice when you redistribute the data.
The Portal logo belongs to the Open Model Gateway project.

Sources and attribution

Source	Licence	Used for
LiteLLM model_prices_and_context_window.json	MIT	Primary price source for OpenAI, Anthropic and Amazon Bedrock offerings (standard, batch, cache and prompt-size tiers). Each synced entry records the commit, SHA-256 and entry key.
pydantic genai-prices (v2 data)	MIT	Cross-check only. Disagreements are reported in the sync pull request and never auto-merged; its values are not written to the catalog.
OpenRouter models API	OpenRouter terms of service	Prices for the OpenRouter provider only (its own list prices; batch from the :batch model ids).
models.dev api.json	MIT	Fills missing model metadata (release date, knowledge cutoff, limits). Not used for prices.
Provider pricing pages	Provider terms	Seed prices were read from the official Anthropic and OpenAI pricing pages; each entry links the page it came from.
AWS Price List (Amazon Bedrock foundation models)	AWS site terms	Seed Bedrock prices and verification links.
Inter typeface	SIL Open Font License 1.1	Self-hosted web font.

How prices stay current

Every hour a GitHub workflow compares the catalog with the sources above and opens or updates one pull request with a readable summary.
It merges automatically only when every changed rate moved by 25% or less, or when it adds a first known price or missing model details, and the cross-check agrees. Anything else, any disagreement between sources and anything that disappeared from a source waits for a person.
Model, provider and price changes are plain TOML files in the repository; corrections are welcome as pull requests.

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