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One API key. Every frontier model.

OpenAI, Anthropic, Gemini, Bedrock, and every major Chinese model — behind a single OpenAI-compatible endpoint. Pay with USDT, ship in minutes.

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OpenAIAnthropicGoogle GeminiAzure OpenAIAWS BedrockDeepSeekQwenKimiDoubaoGLM

Built for builders.

The fastest way to ship AI products without juggling four billing portals and three SDKs.

One API, every model

OpenAI-compatible endpoint for 40+ upstream providers. Swap models with a single string change.

USDT-only billing

Top up with TRC20 USDT. No KYC, no card, settles in under a minute.

Transparent pricing

Per-token pricing on every model. Real-time usage logs, per-key quotas, and exportable invoices.

Built for production

Multi-region routing, automatic failover, streaming, vision, tools and function calls all supported.

POST https://api.2aun.tech/v1/chat/completions

curl https://api.2aun.tech/v1/chat/completions \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-6",
    "messages": [{"role":"user","content":"Hello!"}],
    "stream": true
  }'

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