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The independent index for what AI capability costs

Read the live TKX. Cite the source.

Headline TKX, Open, and Frontier stay public — no key required.

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Docs

Index API reference

API

API

Live series and history you can cite.

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The Index API returns the live TKX and its history for your own internal analysis. Using TKX in pricing, contracts, routing or a product you offer customers needs a written license from Cambent.