Tether vs Global Dollar โ side-by-side comparison of supply, chains, backing, and peg data.
Over the last 30 days USDT supply moved -0.6% and USDG +17.6% โ USDG grew faster. USDT held the tighter band: worst deviation 14 bps against 33 bps.
| Metric | USDT | USDG |
|---|---|---|
| USD circulation value | $183.08B | $3.42B |
| Rank (by USD value) | #1 | #7 |
| Peg | USD | USD |
| Mechanism | fiat-backed | fiat-backed |
| Backing | Cash & T-bills | Cash reserves (Paxos) |
| Chains deployed | 130 | 6 |
| Primary chain | Tron | X Layer |
| Issuer | Tether Limited | Paxos Trust Company |
| CoinGecko | View โ | View โ |
Both track USD, so they compete for the same use cases. USDT holds cash & t-bills; USDG holds cash reserves (paxos). USDT ranks #1 by USD value and USDG ranks #7.
USDT is larger, with $183.08B in circulation vs $3.42B for USDG. That's roughly 53.6ร the size.
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight โ 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.
Yes. USDT and USDG 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.
The right choice depends on your use case. Consider: which chain do you need? USDT is available on 130 chains and USDG on 6. 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.