USDAI/USD price feed
USDai is the dollar underneath sUSDai, the climbing wrapper that has its own page in this catalog. The pair splits one question in two: the wrapper answers what the stake has earned, the base answers whether the dollar itself is whole. This page carries the second answer, read from the base token's own pools.
Aggregate on-chain rate: hourly view of the last 4 weeks. The API itself updates block by block. Request API access
Book composition · auto-observed
One pool carries most of the weight at the moment; smaller legs on other chains fill out the book.
The dollar under the wrapper
USD.AI issues the pair together: USDai as a synthetic dollar backed by PayPal's PYUSD stablecoin, sUSDai as the staked form that accrues the protocol's lending yield. Holders climb into the wrapper for the earnings; the base exists to be a dollar, no more.
That division of labor makes the two feeds read differently on purpose. Drift in the wrapper's level is mostly yield arithmetic; drift in the base's level is information about the dollar itself, the kind a desk wants unrounded. A desk that holds either usually watches both.
One naming trap is worth a sentence: public listings also carry the protocol's governance token under a near-identical name, trading at a few cents. This page prices the dollar; the governance token has nothing to do with the number above.
The quiet half of the pair
The book has drawn venues of different builds, classic pools beside vault-style venues that hold much of their liquidity away from the mid; the vault pattern is a family trait, told in full on the wrapper's page. Whichever mix qualifies in a given week, each venue is weighted by the liquidity it can show on-chain.
Public trackers report volume for the token well beyond what its pools clear; the venues measured here are the open, contract-readable part of that market, the part a settlement contract can actually reach.
The geography can widen on its own schedule, the same way the wrapper's map filled in; qualification is mechanical, so new venues join as they earn their place. Base and wrapper, side by side, each doing its half of the job.
Who runs on this rate
Treasuries marking the pair
Positions usually involve both tokens over time; base and wrapper come measured the same way, one click apart.
Risk desks watching NAV versus market
A synthetic dollar's stated value and its traded level are two numbers; this page supplies the traded one for the base.
Integrations resolving the dollar
The name collides with a governance token at a very different price; a feed keyed to the dollar's own pools cannot pick up the wrong asset.
Where the USDAI market lives
Active USDAI/USD pools per chain, as observed by the feed on 2026-10-27.
USDAI in the catalog
4 pairs, each computed from its own pools with the same methodology:
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