Dai vs Tether
Dai (DAI) and Tether (USDT) both sit in the stablecoins category, so they compete for the same slot in a portfolio. Tether launched in 2014, 3 years before Dai. Dai uses — (token sobre Ethereum) and Tether uses —. This page compares what can actually be verified about each protocol — nobody can tell you which will be worth more, and this page does not try to.
Cryptocurrencies are a highly volatile asset class without the protections of regulated funds: you can lose your entire investment. This comparison is educational content about the technical characteristics of two protocols, not a buy recommendation or a price forecast.
Head to head
Verifiable data for each protocol. Price and performance are deliberately left out: they change daily and cannot be derived from technical specs.
| Dai | Tether | |
|---|---|---|
| Symbol | DAI | USDT |
| Launched | 2017 | 2014 |
| Consensus | — (token sobre Ethereum) | — |
| Max supply | ∞ | ∞ |
| Category | Stablecoins | Stablecoins |
This table does not say which one is "better". It says how they differ, which is the only thing that can be stated without guessing.
Dai
DAIThe reference decentralized stablecoin: keeps its dollar peg via crypto collateral, with no central issuer.
Tether
USDTThe most used stablecoin: aims to keep a 1:1 peg with the US dollar. Not an appreciating investment but a haven within the ecosystem.
Frequently asked questions
What is the difference between Dai and Tether?+
Dai (DAI) launched in 2017, uses — (token sobre Ethereum) and has a maximum supply of ∞. Tether (USDT) launched in 2014, uses — and has a maximum supply of ∞. Beyond the numbers, they were built for different purposes — see the description of each below.
Which one will be worth more?+
Nobody knows, and anyone telling you otherwise is guessing. Crypto prices depend on adoption, regulation, liquidity and sentiment, none of which can be forecast from a protocol's specs. This page deliberately compares only what is verifiable today.
Which has the scarcer supply?+
Neither has a hard cap on issuance (∞ and ∞). That is not automatically bad: many protocols use ongoing issuance to pay for network security, but it does mean supply is not fixed.
Do they use the same technology?+
No: Dai uses — (token sobre Ethereum) and Tether uses —. The consensus mechanism affects energy use, how the network is secured and how new coins enter circulation.
Should I hold both?+
That is a question about your risk tolerance, not about these two protocols. Crypto is a volatile asset class where you can lose your entire investment, and holding two coins in the same category adds far less diversification than it looks — they tend to move together. This is educational content, not a recommendation.