USDC · 18 networks

Pay for AI API usage with USDC

USDC reaches 18 networks on QCode, tying it for the widest coverage of any coin we take — from mainstream chains like Solana and Base through to Stellar, Algorand, Injective and Canton.

#USDC#Solana#Base#Zero fee

Four things that define this channel

networks available

Tied with USDT for the most. Alongside the mainstream EVM chains and Solana you get Sui, Stellar, Algorand, Injective and Canton.

platform fee

We verify the on-chain transaction ourselves rather than routing through a crypto gateway, so nothing is skimmed.

network needs a memo

Canton Network requires the memo we issue. Without it the deposit does not credit automatically and needs manual recovery.

unusual address forms

Stellar uses a muxed address with the memo already embedded, and Tempo carries USDC.e. Both are flagged on the recharge page.

Why some people pick USDC over USDT

On our side the two are equivalent: same zero fee, same USD credit, same number of networks. The difference is off-platform. USDC's issuer is US-regulated and publishes reserve attestations more frequently, which some teams' internal compliance prefers. USDC also has deeper activity on Base and Solana, so if your funds already sit on either chain you skip a conversion.

The USDC networks we accept

Solana, Base, Arbitrum One, Polygon, Optimism, Ethereum, Avalanche C-Chain, Sei, Ink, Sonic, XDC Network, Hedera, Sui, Stellar, Algorand, Injective, Canton Network and Tempo — eighteen in all. Hedera and Tempo use deposit addresses distinct from the other EVM chains, Canton requires a memo, and the token on Tempo is USDC.e.

Three steps

Step 1

Get the USD figure for your plan from the pricing page. USDC usually tracks the dollar closely, but sending 2-3% extra still covers the on-chain fee.

Step 2

Sign in, open the recharge page, choose USDC, then a network. If you pick Canton the page additionally shows the memo you must include, with its own copy button.

Step 3

After the transfer, send us the network, amount, transaction hash and your QCode ID. We verify and credit the balance.

Mainstream chains and the long tail

Start here

Solana is very cheap and confirms quickly. Base is one of the most active USDC L2s right now. Arbitrum One, Polygon and Optimism are equally cheap with broad wallet support. These four cover the overwhelming majority of users and none of them needs a memo.

The long tail needs care

Canton Network requires a memo; leave it out and the funds are neither returned nor credited automatically. Stellar hands you a muxed address starting with M which already embeds its memo, so do not add a separate one, and be aware that some wallets reject the format. Sui addresses are 0x followed by 64 hex characters, which looks like an Ethereum address but is not — never send those from an EVM wallet. The recharge page raises each of these when you select the network.

USDC versus USDT

USDC

Deeper activity on Base and Solana, and an issuer with more frequent regulated disclosure. Same network count and same zero fee as USDT.

USDT

More widely distributed across exchanges and Asian markets, and Tron (TRC20) withdrawals are supported nearly everywhere. If your funds live on an exchange, USDT is usually the smoother path.

Picking a network you will not regret

Work through it in order. Start from where your USDC already is and avoid bridging when you can, since bridging costs two fees and adds a failure mode. If the funds are on an exchange, open its withdrawal screen, see which networks it offers, and pick one that appears on our list too. Then, once selected, read the token symbol on the recharge page back against your wallet. That last check catches nearly every accident.

What the balance can call

Topping up with USDC gives you a general USD balance that works across everything QCode carries: the full Claude Code line, OpenAI Codex, Gemini, and Chinese families such as GLM, Kimi, DeepSeek and Qwen. Billing is by actual usage with no concurrency cap, and there is no rule restricting crypto-funded balance to particular models.

Frequently asked questions

Which USDC network is cheapest?

Solana is usually cheapest and fastest, with Base close behind. If your funds are already on Arbitrum, Polygon or Optimism, using that chain is better still because it avoids a bridge.

What happens if I forget the Canton memo?

The funds are not returned, but they do not credit automatically either and need manual recovery. Contact us with the transaction hash straight away and we will help, though it takes longer than a normal top-up. The safe habit is to paste the memo using the copy button on the recharge page before you send.

My wallet will not accept the Stellar M address. What now?

Some wallets only support G addresses plus a separate memo and reject muxed addresses. Do not try to decompose the address yourself — switching to another network such as Solana or Base is the safer move.

Is USDC.e the same as USDC?

No. Tempo carries USDC.e, a bridged build. The recharge page states that the token to send on that network is USDC.e, and you should send exactly that.

How long does crediting take?

We credit after receiving your report and verifying the on-chain transaction, usually within a day and faster during business hours. This is not an instant-settlement channel.

Where this page gets its facts

The network list, token builds and memo requirements all come from the same configuration that drives the recharge page and update alongside it. On-chain fees are set by each network in real time and are unrelated to QCode.