DAI (Ethereum) → USDT Optimism (OP Mainnet (Optimism))

Dollars change networks: send DAI in Ethereum, collect USDT Optimism in OP Mainnet (Optimism). One order.

Rate as of Nov 1, 2026 13:54

Payout network: Optimism
24 hours: +0.01%

You send

DAI

You get 1.0056

USDT Optimism

Start the order

Rate: 1 DAI = 1.0056 USDT Optimism
Up to: 10,000,000 DAI

The figure is indicative; the exact amount is locked in the order.

The direction runs at 1.0056 USDT Optimism per DAI, or 0.994421 DAI per USDT Optimism. Market over 24 hours: DAI against USDT Optimism plus 0.01%. The week added minus 0.01%.

The weekly corridor ran from 1.0005 to 1.0015 USDT Optimism, a spread of 0.1%.

The payout leaves in the Optimism network, so the receiving address has to belong to that network. By market cap Dai sits 22th ($4.55 B) and Tether 3th ($180.04 B). Daily moves of DAI and USDT over 90 days line up at -0.08 (they travel apart).

Who takes the DAI → USDT Optimism route

A road both waysThe USDT Optimism → DAI direction is open too, so going back into DAI takes the same route.

DAI → USDT Optimism rate and amounts

1 DAI = 1.0056 USDT Optimism

1 USDT Optimism = 0.994421 DAI

Send DAI — receive USDT Optimism

DAI	USDT Optimism
10	10.0561
50	50.2805
500	502.8053
2,000	2,011.22
20,000	20,112.21
100,000	100,561.06

Need USDT Optimism — send this much DAI

USDT Optimism	DAI
20	19.8884
100	99.4421
500	497.2104
5,000	4,972.1
20,000	19,888.42
100,000	99,442.08

Payout network for USDT

The same USDT goes out in several networks. Rates and lower limits differ, and the fee is charged by the network itself.

Network	Per DAI	From	Network fee	Speed
Solana	1.0021	100 DAI	≈ $0.00048	fast
TRON (TRC20)	1.0021	100 DAI	≈ $2.1	fast
Polygon	1.0021	100 DAI	≈ $0.00017	fast
Arbitrum One	1.0056	100 DAI	≈ $0.003	fast
TON	1.0021	100 DAI	low	fast
Ethereum (ERC20)	0.99809	100 DAI	≈ $0.0062	medium
OMNI	1.0056	—	—	—
BNB Smart Chain (BEP20)	1.0056	200 DAI	≈ $0.0023	fast
Avalanche C-Chain	1.0056	—	≈ $0.0014	fast
NEAR	1.0056	—	—	—
Optimism open now	1.0056	—	≈ $0.00015	fast

DAI → USDT: compare all networks USDT network fees

How the DAI → USDT Optimism order runs

Work out the amount in the calculator and press the exchange button.
Enter a USDT address in Optimism and a way to reach you.
Send DAI in Dai for exactly the amount stated in the order.
Once the network confirms your transfer, Tether leaves for your address. The order page tracks every step.

Swap DAI for USDT Optimism

Check this before sending DAI

The address network is Optimism. Sending through another network usually means losing the transfer.
Copy the address whole, then compare the first and last characters after pasting.
Ethereum, Arbitrum, Optimism, BNB Smart Chain and Polygon all use the same address shape (0x…). Make sure the wallet is switched to OP Mainnet (Optimism).
To move USDT on later, put a little ETH at the same address.
Coins go through an AML check: a flagged transfer can be held until the check is finished.

Ethereum against OP Mainnet (Optimism)

	Ethereum	OP Mainnet (Optimism)
Network type	Layer one (L1)	L2, optimistic rollup
Fees are paid in	ETH	ETH
Fee level	≈ $0.0062	≈ $0.00015
Speed	medium	fast
Block	~12 sec	~2 sec
Address shape	0x…	0x…
Memo or tag	not needed	not needed
Ethereum-style address (0x…)	yes	yes
Official withdrawal to Ethereum	—	≈ 7 days (challenge period)

Fee and speed levels are comparative: both move with how busy the network is.

How this differs from a classic bridge

	RubyCash	Classic bridge
What lands at your address	USDT in OP Mainnet (Optimism)	The same stablecoin; turning USDT into USDC is a separate step
Wallet and signatures	Not needed: the coins go to the address from the order	Needed: connect the wallet and sign contract transactions
A coin for fees in OP Mainnet (Optimism)	Not needed to receive	Often needed, or the funds cannot be claimed or moved on
Timing	After confirmations in Ethereum; the order page tracks it	Depends on the bridge and the load of both networks
Who holds the funds meanwhile	RubyCash for the life of the order, with an AML check	The bridge contract or its validators

Bridge Ethereum → OP Mainnet (Optimism): all directions The OP Mainnet (Optimism) network

Where the DAI to USDT Optimism rate has been

WeekMonthQuarterYear

high 1.0015 USDT Optimismlow 1.0005 USDT Optimism

Oct 25, 2026 13:55Nov 1, 2026 13:55

high 1.0014 USDT Optimismlow 0.999828 USDT Optimism

Oct 1, 2026 03:00Oct 31, 2026 03:00

high 1.0014 USDT Optimismlow 0.99954 USDT Optimism

Aug 2, 2026 03:00Oct 31, 2026 03:00

high 1.0019 USDT Optimismlow 0.991085 USDT Optimism

Nov 2, 2025 03:00Oct 31, 2026 03:00

24 hours: +0.01%
Week: −0.01%
Weekly high: 1.0015 USDT Optimism
Weekly low: 1.0005 USDT Optimism
Spread: 0.1%

Market data from CoinGecko as of Nov 1, 2026 11:54; the exchange rate is calculated separately and differs. Where these numbers come from

How far DAI/USDT Optimism travelled, by period

Period	High	Low	Middle	Net move
24 hours	1.0012	1.0009	1.0011	+0.01%
Week	1.0015	1.0005	1.001	−0.01%
Month	1.0014	0.999828	1.0007	+0.03%
Quarter	1.0014	0.99954	1.0005	+0.01%

Figures are in USDT Optimism per unit sent, from market data.

Daily DAI → USDT Optimism rate

Day	Close	Against the day before
Oct 31, 2026	1.0007 USDT Optimism	−0.05%
Oct 30, 2026	1.0013 USDT Optimism	+0.03%
Oct 29, 2026	1.001 USDT Optimism	−0.01%
Oct 28, 2026	1.0011 USDT Optimism	−0.03%
Oct 27, 2026	1.0014 USDT Optimism	+0.03%
Oct 26, 2026	1.0011 USDT Optimism	−0.01%
Oct 25, 2026	1.0012 USDT Optimism	+0.02%

Daily RubyCash rate: DAI → USDT Optimism

Date	RubyCash rate	Market rate
Nov 1, 2026	1.0056 USDT Optimism	1.0005
Oct 31, 2026	1.0056 USDT Optimism	1.0015
Oct 30, 2026	1.0056 USDT Optimism	1.001
Oct 29, 2026	1.0056 USDT Optimism	1.001
Oct 28, 2026	1.0056 USDT Optimism	1.0007
Oct 27, 2026	1.0056 USDT Optimism	1.001
Oct 26, 2026	1.0056 USDT Optimism	1.0013
Oct 25, 2026	1.0056 USDT Optimism	1.0009
Oct 24, 2026	1.0056 USDT Optimism	1.0009
Oct 22, 2026	1.0056 USDT Optimism	1.0009
Oct 21, 2026	1.0056 USDT Optimism	0.999684
Oct 20, 2026	1.0056 USDT Optimism	1.0008
Oct 19, 2026	1.0056 USDT Optimism	1.0008
Oct 18, 2026	1.0056 USDT Optimism	1.0008

Our own rate is written down every hour; the table keeps the last entry of each day. The market column is the ratio of the same two coins on CoinGecko at that moment. Where these numbers come from

The numbers on DAI and USDT

Dai DAI

Price: $1.00
24 hours: +0.03%
Week: +0.06%
Market cap: $4.55 B
24-hour turnover: $38.97 M
Rank by cap: #22
In circulation: 4.55 B DAI
Record price: $1.22

Tether USDT

Price: $0.999538
24 hours: +0.02%
Week: +0.05%
Market cap: $180.04 B
24-hour turnover: $25.75 B
Rank by cap: #3
In circulation: 180.12 B USDT
Record price: $1.32

Source: CoinGecko, Nov 1, 2026 11:54.

Dai against Tether

	Dai (DAI)	Tether (USDT)
Ticker	DAI	USDT
Type	token	token
Launched	2017	2014
Built by	MakerDAO	Tether Limited
Supply cap	no cap	no cap
In circulation	4.55 B DAI	180.12 B USDT
Market cap	$4.55 B	$180.04 B
Rank by cap	#22	#3
Network	—	Optimism
Fees are paid in	—	ETH

Daily moves of DAI and USDT over 90 days line up at -0.08 — they travel apart.

Common questions: DAI → USDT Optimism

What rate does DAI to USDT Optimism run at?

As of Nov 1, 2026 13:54 it is 1 DAI = 1.0056 USDT Optimism. The figure recalculates on its own, and the calculator always shows the fresh one. In dollars that is around $1.01.

What else is taken on top of the rate?

The payout is already calculated at the rate in the calculator. On top of it you only pay the network fee for sending DAI, and that one goes to the blockchain, not to us.

How long does DAI to USDT Optimism take?

The clock starts with confirmations: the order goes into work once Dai confirms your transfer. After that it comes down to how busy the network is. A block in Dai closes in about 12 sec.

Which network will USDT Optimism arrive in?

The payout leaves in Optimism. Make sure the receiving wallet works with that network.

Where is receiving USDT cheaper?

The cheapest is usually USDT SOL, USDT Polygon, USDT Arbitrum, USDT TON, USDT BEP20, USDT AVAX C, USDT Optimism. Still, the network is chosen by what the recipient supports, not by the fee.

Will native USDT arrive, or a wrapper?

USDT Optimism is the standard USDT token in OP Mainnet (Optimism) — exactly what exchanges send when they withdraw into this network.

Do I need ETH to receive USDT Optimism?

Not to receive. ETH comes into play later, when you want to send USDT from your address.

What is wrong with the official OP Mainnet (Optimism) bridge?

An official deposit from Ethereum into OP Mainnet (Optimism) means connecting a wallet and signing a contract transaction. Here you simply send DAI to the address from the order.

What if the rate moves while I am paying?

The rate is pinned to the order and does not move while the order is alive. It can be recalculated if the payment arrives late or for a different amount — so send the exact sum, and send it promptly.

What did the DAI to USDT Optimism rate do this month?

The month came in at plus 0.03%. Low 0.999828, high 1.0014, middle 1.0007 USDT Optimism per DAI.

Can I go back, USDT Optimism to DAI?

Yes, the reverse direction is open: 1 USDT Optimism = 1.0024 DAI. The link sits right under the calculator.