USD1vsU
World Liberty Financial USD vs United Stables — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USD1 — World Liberty Financial USD
U — United Stables
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USD1 supply moved +8.5% and U +10.3% — U grew faster. Both held within about 11 bps of target across the same window.
Key differences
- USD1 is roughly 3.2× larger than U by USD circulation value ($4.36B vs $1.38B).
- USD1 ranks #6 while U ranks #15 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- USD1 is a fiat-backed stablecoin; U is crypto-backed. Different mechanism, different failure modes.
- Reserves differ — USD1 holds us treasuries, U holds stablecoin basket.
- USD1 is deployed on 8 chains — much broader coverage than U's 4.
- Primary chain differs — most USD1 supply lives on Ethereum, while most U supply is on BSC.
Full comparison table
| Metric | USD1 | U |
|---|---|---|
| USD circulation value | $4.36B | $1.38B |
| Rank (by USD value) | #6 | #15 |
| Peg | USD | USD |
| Mechanism | fiat-backed | crypto-backed |
| Backing | US Treasuries | Stablecoin basket |
| Chains deployed | 8 | 4 |
| Primary chain | Ethereum | BSC |
| Issuer | World Liberty Financial | — |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USD1 and U?
Both track USD, so they compete for the same use cases. USD1 holds us treasuries; U holds stablecoin basket. USD1 ranks #6 by USD value and U ranks #15.
Which is bigger, USD1 or U?
USD1 is larger, with $4.36B in circulation vs $1.38B for U. That's roughly 3.2× the size.
Is USD1 safer than U?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. USD1 uses a fiat-backed model; U uses a crypto-backed one. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USD1 and U?
Yes. USD1 and U both trade on major centralized and decentralized exchanges. Since both track USD, the exchange rate is typically very close to 1:1. Direct swap protocols on Ethereum, Solana, and other chains offer the tightest spreads.
Should I choose USD1 or U?
The right choice depends on your use case. Consider: which chain do you need? USD1 is available on 8 chains and U on 4. What backing do you prefer? What's your integration surface (exchanges, DeFi protocols, payment providers)? Both have deep liquidity, so market cap alone shouldn't decide it.