Anonymous Claude API: crypto, no KYC
19 Claude models on one key, paid in USDT, USDC, BTC, ETH, SOL or by card. An email address is the whole sign-up: no Anthropic account, no identity documents. Prices read live, next to Anthropic's list.
Every Claude model on the key
USD per million tokens, read from the catalog at render. Anthropic's list price beside ours where it is on record.
| Model | Context | Input | Output | List input | List output | Under list |
|---|---|---|---|---|---|---|
| Claude Fable 5.1claude-fable-5.1 | 1M | $6.00 | $30.00 | $10.00 | $50.00 | 40% |
| Claude Fable 5claude-fable-5 | 1M | $3.00 | $15.00 | $10.00 | $50.00 | 70% |
| Claude Opus 5.5claude-opus-5-5 | 1M | $2.716 | $9.70 | $4.00 | $20.00 | 51% |
| Claude Opus 4.6claude-opus-4-6 | 1M | $1.80 | $7.50 | $5.00 | $25.00 | 70% |
| Claude Opus 4.7claude-opus-4-7 | 1M | $1.80 | $7.50 | $5.00 | $25.00 | 70% |
| Claude Opus 5claude-opus-5 | 1M | $1.80 | $7.50 | $5.00 | $25.00 | 70% |
| Claude Haiku 4.5claude-haiku-4-5 | 200K | $0.60 | $3.00 | $1.00 | $5.00 | 40% |
| Claude Haiku 4.5claude-haiku-4-5-20251001 | 200K | $0.60 | $3.00 | $1.00 | $5.00 | 40% |
| Claude Sonnet 5claude-sonnet-5 | 1M | $1.20 | $3.00 | $2.00 | $10.00 | 70% |
| Claude Sonnet 5.5claude-sonnet-5-5 | 1M | $1.20 | $3.00 | $2.00 | $10.00 | 70% |
| Claude Haiku 5.5claude-haiku-5-5 | 1M | $0.06 | $0.15 | $0.10 | $0.50 | 70% |
| Claude Opus 4 5 20251101claude-opus-4-5-20251101 | — | $14.1176 | $70.5882 | — | — | — |
| Claude Opus 4 8 Thinkingclaude-opus-4-8-thinking | — | $1.7247 | $8.6235 | — | — | — |
| Claude Opus 4 7 Thinkingclaude-opus-4-7-thinking | — | $1.3529 | $6.7647 | — | — | — |
| Claude Fable 5 1claude-fable-5-1 | 1M | $0.9341 | $4.6706 | — | — | — |
| Claude Sonnet 4 6 Thinkingclaude-sonnet-4-6-thinking | — | $0.7376 | $3.6882 | — | — | — |
| Claude Opus 4 6 Thinkingclaude-opus-4-6-thinking | — | $0.5412 | $2.7059 | — | — | — |
| Claude Sonnet 4 5 20250929claude-sonnet-4-5-20250929 | — | $0.50 | $2.4706 | — | — | — |
| Claude Sonnet 5 Thinkingclaude-sonnet-5-thinking | — | $0.2241 | $1.1206 | — | — | — |
Cached input is priced lower on every row that supports it; the model page has the rate.
An email, a key, a request
Three facts about the account, from the privacy page.
The account
An email address, each top-up with its amount and the payment’s own reference, and the keys you create. No name, no ID, no phone number.
The request
Your key, the model id and the content. One usage record is kept per request: request id, model, token counts and the charge. Request and response bodies are not stored.
The payment
USDT, USDC, BTC, ETH, SOL to the address the checkout shows; the balance credits in USD when the network confirms. No card on file for crypto top-ups.
Anthropic SDK and Claude Code
Python, with the Anthropic SDK
import anthropic client = anthropic.Anthropic(base_url="https://api.relayswitch.io/v1", api_key="YOUR_RELAYSWITCH_KEY")reply = client.messages.create( model="claude-sonnet-5-5", max_tokens=300, messages=[{"role": "user", "content": "Hello"}],)print(reply.content[0].text)Claude Code
export ANTHROPIC_BASE_URL="https://api.relayswitch.io/v1"export ANTHROPIC_AUTH_TOKEN="sk-relay-..."claudeThe OpenAI format works on the same ids at https://api.relayswitch.io/v1/chat/completions. Setup for Cursor, the OpenAI SDK and the Vercel AI SDK is in the guides.
Claude by API: questions
Identity, content and formats.
Claude on one key, paid in crypto
From $10 in USDT, USDC, BTC, ETH, SOL. The balance credits on confirmation; the key works at once.