yearn.finance (YFI) → Tether (USDT Optimism)
The order runs on autopilot: the rate is locked when you create it, and the payout leaves as soon as the network confirms your transfer. No manual approval, no working hours.
Rate and amounts for YFI → USDT Optimism
1 YFI = 2,445.8 USDT Optimism
1 USDT Optimism = 0.000408865 YFI
Rate as of Oct 1, 2026 00:40
- Orders from
- 0.0417853 YFI ≈ $101.75
- Payout network
- Optimism
- 24 hours
- +0.34%
Current maths: 2,445.8 USDT Optimism for every YFI, and 0.000408865 YFI per USDT Optimism in reverse. Over 24 hours YFI/USDT Optimism came in at plus 0.34%. Over the week, plus 7.32%.
The weekly range ran from 2,277.78 to 2,506.52 USDT Optimism, a spread of 10.04%. One order takes from 0.0417853 to 4,110 YFI. In dollars that is roughly $101.75.
The robot sends the payout in the Optimism network, so the address has to belong to that network — a transfer to another one will not arrive. Market capitalisation puts yearn.finance at No. 316 ($87.85 M) and Tether at No. 3 ($183.8 B). Over 90 days the daily moves of YFI and USDT correlate at 0.07 (they travel apart).
Which network USDT arrives in
The same USDT goes out in several networks. Each has its own rate and its own floor, and the fee is charged by the network itself.
| Network | Per 1 YFI | From | Network fee | Speed |
|---|---|---|---|---|
| Ethereum (ERC20) | 2,445.8 | 0.0417853 YFI | ≈ $0.049 | medium |
| TRON (TRC20) | 2,445.8 | 0.0417853 YFI | ≈ $2.3 | fast |
| BNB Smart Chain (BEP20) | 2,445.8 | 0.0417853 YFI | ≈ $0.0025 | fast |
| Solana | 2,445.8 | 0.0417853 YFI | ≈ $0.00059 | fast |
| Arbitrum One | 2,445.8 | 0.0417853 YFI | ≈ $0.0036 | fast |
| Avalanche C-Chain | 2,445.8 | 0.0417853 YFI | ≈ $0.0035 | fast |
| NEAR | 2,445.8 | 0.0417853 YFI | — | — |
| Optimism open | 2,445.8 | 0.0417853 YFI | ≈ $0.00019 | fast |
YFI → USDT: all networks side by side Network charges for USDT
Rate and amounts for YFI → USDT Optimism
| YFI | USDT Optimism |
|---|---|
| 0.05 | 122.2898 |
| 0.2 | 489.1591 |
| 0.5 | 1,222.9 |
| 2 | 4,891.59 |
| 5 | 12,228.98 |
| 20 | 48,915.91 |
| USDT Optimism | YFI |
|---|---|
| 200 | 0.081773 |
| 1,000 | 0.408865 |
| 2,000 | 0.81773 |
| 10,000 | 4.0886 |
| 20,000 | 8.1773 |
| 100,000 | 40.8865 |
How the YFI → USDT Optimism exchange runs
- Work out the amount in the calculator — orders start at 0.0417853 YFI.
- Give a USDT address on Optimism and a contact for the order.
- Send YFI on yearn.finance, exactly the amount the order shows.
- Nothing else is needed from you: as soon as the network confirms the transfer, the robot sends Tether to your address. The order page shows the status.
Check this before sending YFI
- The address network is Optimism. Sending through another network almost always means losing the transfer.
- The transfer must not be smaller than 0.0417853 YFI.
- Copy the address in full, then check its first and last characters once it is pasted.
- Send exactly the amount stated in the order: the automation matches your payment against it, and any difference sends the order back for recalculation.
How the YFI to USDT Optimism rate has moved
high 2,506.52 USDT Optimismlow 2,277.78 USDT Optimism
Sep 24, 2026 00:41Oct 1, 2026 00:41
high 2,490.71 USDT Optimismlow 2,043.99 USDT Optimism
Aug 31, 2026 05:00Sep 30, 2026 05:00
high 2,699.56 USDT Optimismlow 1,748.49 USDT Optimism
Jul 2, 2026 05:00Sep 30, 2026 05:00
high 5,563.59 USDT Optimismlow 1,624.74 USDT Optimism
Oct 1, 2025 05:00Sep 30, 2026 05:00
- 24 hours
- +0.34%
- Week
- +7.32%
- Weekly high
- 2,506.52 USDT Optimism
- Weekly low
- 2,277.78 USDT Optimism
- Spread
- 10.04%
Market data from CoinGecko as of Oct 1, 2026 00:27. The exchange rate is worked out separately and differs from the market one. How these numbers are counted
The YFI/USDT Optimism spread by period
| Period | High | Low | Middle | Period result |
|---|---|---|---|---|
| 24 hours | 2,491.13 | 2,396.83 | 2,438.37 | +0.34% |
| Week | 2,506.52 | 2,277.78 | 2,422.68 | +7.32% |
| Month | 2,490.71 | 2,043.99 | 2,265.99 | +12.38% |
| Quarter | 2,699.56 | 1,748.49 | 2,152.08 | +42.45% |
Figures are in USDT Optimism per unit of the currency you send, taken from market data.
Daily YFI → USDT Optimism rate
| Day | Close | Against the day before |
|---|---|---|
| Sep 30, 2026 | 2,490.71 USDT Optimism | +4.8% |
| Sep 29, 2026 | 2,376.64 USDT Optimism | −4.19% |
| Sep 28, 2026 | 2,480.56 USDT Optimism | −0.11% |
| Sep 27, 2026 | 2,483.32 USDT Optimism | +0.4% |
| Sep 26, 2026 | 2,473.33 USDT Optimism | +2.71% |
| Sep 25, 2026 | 2,408.15 USDT Optimism | +4.41% |
| Sep 24, 2026 | 2,306.47 USDT Optimism | −2.21% |
Market data: YFI and USDT
yearn.finance YFI- Price
- $2,435.16
- 24 hours
- +0.33%
- Week
- +5.63%
- Market cap
- $87.85 M
- 24-hour turnover
- $5.65 M
- Rank by cap
- #316
- In circulation
- 36.08 K YFI
- All-time high
- $90,787.00
Tether USDT- Price
- $0.999615
- 24 hours
- −0.01%
- Week
- −0.01%
- Market cap
- $183.8 B
- 24-hour turnover
- $63.18 B
- Rank by cap
- #3
- In circulation
- 183.87 B USDT
- All-time high
- $1.32
Source: CoinGecko, Oct 1, 2026 00:27.
yearn.finance and Tether: how they differ
| yearn.finance (YFI) | Tether (USDT) | |
|---|---|---|
| Ticker | YFI | USDT |
| In circulation | 36.08 K YFI | 183.87 B USDT |
| Market cap | $87.85 M | $183.8 B |
| Rank by cap | #316 | #3 |
| Type | — | token |
| Network | — | Optimism |
| Fees are paid in | — | ETH |
| Launched | — | 2014 |
| Built by | — | Tether Limited |
| Supply cap | — | no cap |
Daily moves of YFI and USDT over the quarter link at 0.07 (they travel apart).
Why people take the YFI → USDT Optimism route
- Stepping out of the swingsYFI moved +12.34% over the past month. USDT tracks the dollar, so after the swap the amount stops following YFI.
- It works both waysThe USDT Optimism → YFI direction is open as well — going back into YFI takes the same route and the same automation.
Common questions: YFI → USDT Optimism
What rate does YFI to USDT Optimism run at?
As of Oct 1, 2026 00:40 it is 1 YFI = 2,445.8 USDT Optimism. The figure updates on its own, and the calculator always shows the current one. On the market that is around $2,444.85.
What amounts does YFI → USDT Optimism accept?
From 0.0417853 to 4,110 YFI per order. The floor is roughly $101.75.
Why can I not swap less than 0.0417853 YFI?
The network fee and the handling do not depend on the amount. On a transfer below 0.0417853 YFI they eat a noticeable share of it, and the swap stops making sense for either side.
Is anything charged on top of the rate?
No. The payout is already worked out at the rate in the calculator. Separately you pay only the network fee for sending YFI, and the blockchain takes that one.
How long does swapping YFI for USDT Optimism take?
The clock starts with confirmations: as soon as yearn.finance confirms your transfer, the order goes out for payout with no operator involved. After that the timing is set by how busy the network is — which is the difference between quick and instant.
Which network will USDT Optimism arrive in?
The payout goes out on Optimism. Check that the receiving wallet supports that network.
Which network is cheaper for receiving USDT?
Usually USDT BEP20, USDT SOL, USDT Arbitrum, USDT AVAX C, USDT Optimism works out cheaper. Still, the network is picked by what the recipient accepts, not by the fee.
What happens if the rate moves while I am paying?
Nothing: the rate is locked in the order and holds for as long as the order is alive. It is recalculated only if the payment arrives late or for a different amount — so send the exact sum, and send it promptly.
What did the YFI to USDT Optimism rate do over the month?
Over the month, plus 12.38%: a low of 2,043.99, a high of 2,490.71, an average of 2,265.99 USDT Optimism per 1 YFI.
Can I swap back, USDT Optimism for YFI?
Yes, the reverse is open too: 1 USDT Optimism = 0.000408857 YFI. The link to switch sits under the calculator.
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