Claude Sonnet 4 API - Low-Cost Access Guide

Claude Sonnet 4 is a Claude-series LLM by Anthropic. Access it via TokenDos with pay-per-token billing, input from 0.003 USD/1K tokens — no VPN required, typically well below official pricing.

Rate = site price in CNY / official catalog price = (site price in USD * FX) / catalog price; single value, 1.0x = at official price.

Claude Sonnet 4 Live Node Pricing

Claude Sonnet 4 Use Cases

• AI coding assistant (Claude Code)
• Code generation & refactoring
• Long-document analysis
• Agentic workflows
• Technical design

Three steps to access Claude Sonnet 4

1. Register a TokenDos account and get your API key (free trial credits for new users)
2. Set environment variables: OPENAI_BASE_URL=https://api.tokendos.com/v1, OPENAI_API_KEY=your-token-dos-key
3. Call Claude Sonnet 4 from Codex CLI or any compatible SDK

View Claude Sonnet 4 live pricing