--- title: "Pay for an LLM API with crypto: USDT, USDC, BTC, ETH, SOL" canonical: https://relayswitch.io/crypto generated: 2026-10-27T03:02:13.227Z source: https://api.relayswitch.io/v1/catalog base_url: https://api.relayswitch.io/v1 --- 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](https://app.relayswitch.io/console/billing)[See every price](https://relayswitch.io/models) 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 5.5](https://relayswitch.io/models/claude-opus-5-5)claude-opus-5-5 | $2.716 | $9.70 | 4,862 | 51% | | [GPT-5.5](https://relayswitch.io/models/gpt-5.5)gpt-5.5 | $1.80 | $9.00 | 6,172 | 70% | | [DeepSeek V4 Pro 0423](https://relayswitch.io/models/deepseek-v4-pro)deepseek-v4-pro | $0.792 | $2.376 | 18,037 | 40% | | [Grok 4.7](https://relayswitch.io/models/grok-4.7)grok-4.7 | $0.60 | $1.80 | 23,809 | 70% | | [GLM 5.3](https://relayswitch.io/models/glm-5.3)glm-5.3 | $0.3276 | $1.0296 | 42,735 | 70% | | [Kimi K3](https://relayswitch.io/models/kimi-k3)kimi-k3 | $0.90 | $4.50 | 12,345 | 70% | | [Qwen3.7 Max](https://relayswitch.io/models/qwen3.7-max)qwen3.7-max | $0.6471 | $1.9412 | 22,077 | 56% | | [GLM-5.3 Uncensored](https://relayswitch.io/models/glm-5.3-uncensored)glm-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 1. 01 Open an account An email address is the whole sign-up. No card, no identity documents. 2. 02 Pick an amount Press Top up in the console and choose Crypto. From $10, in USD. 3. 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. 4. 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. Related - [No-KYC AI API](https://relayswitch.io/no-kyc) - [Claude by API, paid in crypto](https://relayswitch.io/anonymous-claude-api) - [Every payment method](https://relayswitch.io/pay-with-crypto) - [How a crypto top-up works](https://relayswitch.io/blog/pay-for-ai-api-with-crypto) - [Pricing](https://relayswitch.io/pricing) - [Uncensored models](https://relayswitch.io/uncensored) - [GPT-5.5 API key, paid in crypto](https://relayswitch.io/blog/gpt-5-5-api-key) - [Claude by API, cheapest paid route](https://relayswitch.io/blog/free-claude-api) - [Grok after the free tier](https://relayswitch.io/blog/grok-free-tier-api) FAQs ## Paying in crypto: questions Coins, credit and billing. Open the console A key in under a minute [Get a key](https://app.relayswitch.io/console/login) Or email [hello@relayswitch.io](mailto: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](https://app.relayswitch.io/console/login)[Top up with crypto](https://app.relayswitch.io/console/billing)