Which coins can I pay for the LLM API with?

USDT, USDC, BTC, ETH, SOL. The checkout lists the networks it accepts at the moment you pay and quotes the exact amount for each. Stablecoins credit at face value; BTC, ETH and SOL at the live rate the checkout shows.

How does the credit land?

As USD on your account balance, once the payment confirms on its network, usually within a few minutes. Every request then draws down from that balance at the per-token price on the model page. The balance does not expire.

Can I pay for Claude and GPT models with crypto?

Yes. The same balance pays for every model on the key, Claude, GPT, Gemini, DeepSeek and the uncensored builds included. Claude Opus 5.5 is $2.716 in and $9.70 out per million tokens today.

Can I pay for the OpenAI API with crypto?

Not at OpenAI, which bills a card on file. Here the GPT ids answer the OpenAI format on this key, and the balance that pays for them can be topped up in USDT, USDC, BTC, ETH, SOL. The same holds for ChatGPT's models by API: pick the GPT id on the Models page and point the SDK at https://api.relayswitch.io/v1.

How does this compare with other pay-with-crypto API pages?

The provider pages that rank for this phrase quote the developer's list price plus a fee on the crypto top-up, or a flat price per model. Here nothing is added on the top-up and 69 of the 75 chat models with a published list price sit under it on both input and output, read from the catalog at render.

Do I need a card as a backup?

No. Crypto top-ups stand on their own: no card on file, no subscription, no automatic charge. When the balance runs out, requests answer 402 until the next top-up.

Is there a minimum top-up?

$10. The one-tap amounts run to $500; any amount in between can be typed.

What if I send on the wrong network?

Funds sent on an unlisted network or in another asset may be unrecoverable, and a confirmed crypto payment is final. Check the asset and the network on the checkout before you send.

Payment / Crypto

Pay for an LLM API with crypto

287 models on one key. Send USDT, USDC, BTC, ETH, SOL; the balance credits in USD when the network confirms, and every request bills per token from it. No card, no KYC.

Top up with crypto See every price

287Models on the key

5Coins acceptedUSDT, USDC, BTC, ETH, SOL

$10Minimum top-up

USDBalance currencycredits on confirmation

Live prices

What $50 in crypto buys

Prices read from the catalog at render, USD per million tokens. A chat turn here is 2,000 tokens in and 500 out. The pages that rank for "pay for an LLM API with crypto" add a fee to the developer's list price; here nothing is added on the top-up and 69 of the 75 chat models with a list price sit under it.

Model	Input	Output	Chat turns per $50	Under list
Claude Opus 5.5claude-opus-5-5	$2.716	$9.70	4,862	51%
GPT-5.5gpt-5.5	$1.80	$9.00	6,172	70%
DeepSeek V4 Pro 0423deepseek-v4-pro	$0.792	$2.376	18,037	40%
Grok 4.7grok-4.7	$0.60	$1.80	23,809	70%
GLM 5.3glm-5.3	$0.3276	$1.0296	42,735	70%
Kimi K3kimi-k3	$0.90	$4.50	12,345	70%
Qwen3.7 Maxqwen3.7-max	$0.6471	$1.9412	22,077	56%
GLM-5.3 Uncensoredglm-5.3-uncensored	$0.282	$0.846	50,658	—

Every model on the key is on the Models page with the same live prices. "Under list" compares with the developer's published price where one is on record.

Walkthrough

Crypto top-up, step by step

01
Open an account
An email address is the whole sign-up. No card, no identity documents.
02
Pick an amount
Press Top up in the console and choose Crypto. From $10, in USD.
03
Send the coin
The checkout shows an address and the exact amount in USDT, USDC, BTC, ETH, SOL, on the networks it lists at that moment. Send that amount on that network.
04
Call any model
The USD balance credits when the network confirms. Create a key and point any OpenAI SDK at https://api.relayswitch.io/v1.

Paid in crypto, billed per token

The coin pays for a USD balance; the balance pays for requests. Nothing in between.

USDT and USDC

Stablecoins at face value, on the networks the checkout lists. Send the exact amount shown.

BTC, ETH and SOL

Native coins at the live rate the checkout quotes. Credits on confirmation.

A USD balance

Whatever you send, the balance is dollars and the prices are per million tokens. No coin exposure after the top-up.

Per-token billing

Input and output priced separately, cached input lower where the model supports it. One usage record per request.

No KYC

An email address opens the account. No identity documents, no phone number, no card on file.

One key, every model

Point any OpenAI SDK at https://api.relayswitch.io/v1. Claude, GPT, Gemini, DeepSeek and the uncensored builds answer on the same key.

FAQs

Paying in crypto: questions

Coins, credit and billing.

Open the console

A key in under a minute

Get a key

Or email hello@relayswitch.io

Send crypto, call every model

From $10 in USDT, USDC, BTC, ETH, SOL. The balance credits when the network confirms; the key works at once.

Open an account Top up with crypto