USDTvsUSYC
Tether vs Circle USYC — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDT — Tether
USYC — Circle USYC
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USDT supply moved -0.6% and USYC -3.6% — USDT grew faster. USDT held the tighter band: worst deviation 14 bps against 1328 bps.
Key differences
- USDT is roughly 60.9× larger than USYC by USD circulation value ($183.08B vs $3.00B).
- USDT ranks #1 while USYC ranks #8 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- Both are fiat-backed stablecoins, so the mechanism is not what separates them.
- Reserves differ — USDT holds cash & t-bills, USYC holds tokenized us treasuries.
- USDT is deployed on 130 chains — much broader coverage than USYC's 2.
- Primary chain differs — most USDT supply lives on Tron, while most USYC supply is on BSC.
Full comparison table
| Metric | USDT | USYC |
|---|---|---|
| USD circulation value | $183.08B | $3.00B |
| Rank (by USD value) | #1 | #8 |
| Peg | USD | USD |
| Mechanism | fiat-backed | fiat-backed |
| Backing | Cash & T-bills | Tokenized US Treasuries |
| Chains deployed | 130 | 2 |
| Primary chain | Tron | BSC |
| Issuer | Tether Limited | Circle |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDT and USYC?
Both track USD, so they compete for the same use cases. USDT holds cash & t-bills; USYC holds tokenized us treasuries. USDT ranks #1 by USD value and USYC ranks #8.
Which is bigger, USDT or USYC?
USDT is larger, with $183.08B in circulation vs $3.00B for USYC. That's roughly 60.9× the size.
Is USDT safer than USYC?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. Both use a fiat-backed model, so the difference sits in the issuer and the reserves rather than the design. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USDT and USYC?
Yes. USDT and USYC 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 USDT or USYC?
The right choice depends on your use case. Consider: which chain do you need? USDT is available on 130 chains and USYC on 2. 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.