ROZO Checkout accepts USDT on Ethereum (ERC20), which OKX lists for withdrawals. Paste your OpenRouter payment link, pick USDT on Ethereum, and ROZO shows a one-time deposit address with the exact amount. Withdraw from OKX on Ethereum straight to that address. When the transfer confirms, ROZO pays the original OpenRouter invoice for you.
The honest part: Ethereum fees are higher
Network fees on Ethereum rise and fall with demand, and they are usually higher than on Solana, BNB Chain or Polygon. On a $10 or $20 top-up, an ERC20 withdrawal fee can be a noticeable share of the payment.
So for small amounts, use Solana: OKX lists Solana for USDT withdrawals and ROZO accepts USDT on Solana. OKX's list does not show BNB Chain for USDT at the time of writing. Ethereum makes sense for larger top-ups, where the fee is a small share of the total, or when you have a reason to stay on Ethereum. OKX shows the network fee for each network before you confirm, so compare them first.
Step by step: OKX on Ethereum to OpenRouter credits
- In OpenRouter, open Settings then Credits, turn on the crypto option, enter the amount and click Purchase. Copy the payment link it generates.
- Open checkout.rozo.ai, paste the link, and pick USDT on Ethereum. ROZO shows a one-time deposit address and the exact amount to send.
- In OKX, go to Withdraw, choose USDT, paste the deposit address, and select Ethereum (ERC20) as the network. It must match the network you picked at ROZO.
- Enter the amount so that what arrives equals the amount ROZO shows. OKX shows the network fee before you confirm; if the fee comes out of the amount you type, add it on top.
- Confirm the withdrawal. Once the transfer confirms on chain, ROZO settles the OpenRouter link, usually in about 30 to 90 seconds.
Three mistakes that cost money
Network mismatch: an Ethereum deposit address looks the same as an address on other EVM networks OKX offers. If ROZO expects USDT on Ethereum and OKX sends it on another network, the payment cannot match. Check the network selector, not just the address.
Short amount: the amount that arrives must equal the amount ROZO asked for. The withdrawal fee is separate from that amount, so check what the recipient will receive before you confirm.
Sending late: a one-time deposit address belongs to one quote and expires with it. If an OKX withdrawal is held for review and the ROZO window is about to run out, get a fresh quote instead of sending late. Never reuse a deposit address from an earlier attempt.
Other networks and what it costs
OKX also lists USDC on Solana and on Base, and ROZO accepts both. OKX lists Tron (TRC20) for USDT too, but ROZO does not accept Tron, so do not use it for this payment.
Three fees, each shown before you pay:
- OpenRouter's own crypto fee, around 5% as listed on OpenRouter's FAQ at the time of writing, is already inside the payment link amount.
- ROZO charges a 1% service fee, shown before you send anything.
- OKX charges a network fee for the withdrawal, shown on its withdrawal screen.
OpenRouter's crypto checkout has a $10 minimum. If you only want $5 of credits, OpenRouter's Stripe form has a Crypto method that accepts $5, and ROZO can pay that crypto.stripe.com link too.
ROZO is independent and is not affiliated with OpenRouter, Coinbase or OKX. There is no ROZO account, no card and no KYC form on our side. Whatever checks OKX applies to withdrawals still apply.