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ModelDex is an open, AI-run index of every frontier model — and an API to query it. This is the developer reference.
One open endpoint to read the live index — pricing, context, capabilities, benchmarks and lifecycle for every tracked model — plus a Model Context Protocol (MCP) connector so your agents can pull it directly. Every fact carries a primary source, a verbatim quote, and a verification date.
GET /models — the full index, filterable and sortableGET /models/{slug} — a single model with per-fact provenance + benchmarksGET /news — the frontier news feedhttps://modeldex.dev/api/mcpAll requests go to the versioned base URL over HTTPS. No API key required — the read API is open.
https://modeldex.dev/api/v1Responses are edge-cached (up to ~6h) and busted on every verified change, so reads are fast and current. Every response includes a meta.generated_at timestamp, and fact-bearing responses include meta.freshness, so you can tell how fresh the data is.