Calling the Claude API from China (Top-Up, Proxy/Relay, and Code Examples)

Why you can't buy a Claude API key from China

Anthropic's API console requires registration from a supported region and a foreign credit card for payment; network access from China is also unstable. As a result, many developers in China run into three problems: they can't register, can't pay, and can't connect.

Comparing options (Anthropic's own API, cloud providers, relay/proxy)

Top-Up and Billing

• •Each request is charged based on the actual input and output tokens consumed; usage records are visible in the console.
• •Supports top-ups via payment methods available in China; you can also buy prepaid plans. Balance is valid for 12 months and does not reset monthly.
• •Balance that remains unused for 90 days is refundable, with a 10% processing fee. See the refund policy for details.

Top-Up and PlansGet API Key

Code Examples (Anthropic SDK, OpenAI-Compatible)

from anthropic import Anthropic

client = Anthropic(
    base_url="https://api.aicodewith.ai",
    api_key="你的_API_KEY",
)

msg = client.messages.create(
    model="claude-sonnet-5-5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "你好"}],
)
print(msg.content[0].text)

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aicodewith.ai/v1",
    api_key="你的_API_KEY",
)

resp = client.chat.completions.create(
    model="claude-sonnet-5-5",
    messages=[{"role": "user", "content": "你好"}],
    stream=True,
)
for chunk in resp:
    print(chunk.choices[0].delta.content or "", end="")

curl https://api.aicodewith.ai/v1/chat/completions \
  -H "Authorization: Bearer 你的_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "claude-sonnet-5-5", "messages": [{"role": "user", "content": "你好"}]}'

The model names in the examples are for demonstration only. Use the model IDs listed on the models page.

Models and Pricing

The model IDs, context lengths, and real-time prices for all Claude models are on the models page. Prices vary by route; refer to the real-time data on the models page.

Claude Model OverviewModels and Real-Time Prices

FAQ