Claude gray-market API resellers: 70–90% off, but who reads it?

Anthropic does not sell Claude in China. Chinese developers use it anyway. A new report from The Information says gray-market Claude API resellers, called "transfer stations," are working openly in Beijing and selling access at 70–90% below Anthropic's list price. The story is about China. The lesson applies to any business that buys AI from a middleman because the price looks too good.

What actually happened

The Information reported on October 5 that about six of roughly 30 tenants in one office building in Beijing's Haidian district resell Claude access, according to a summary of the exclusive. A transfer station is a proxy: it takes a developer's prompt, sends it to Claude through an overseas account, and collects payment in RMB through WeChat or Alipay.

Earlier research by Zilan Qian of the Oxford China Policy Lab, covered by The Decoder, explains where the discount comes from:

• Farmed accounts registered in bulk with SMS verification services, to collect free credits
• Shared discounts from enterprise and education plans
• Accounts paid for with fraudulent cards
• Model swapping: a customer pays for Opus, and the proxy quietly sends the request to a cheaper Sonnet model or a Chinese model

On data: the proxy sees every prompt, response and tool call. Qian notes that operators could sell those logs, but says there is no proof yet that they do this systematically. We report it as a risk, not a fact.

Why it matters for your business

The proxy is a man in the middle by design. Any reseller that sits between you and the model provider can read your traffic. Customer names, contracts, source code, API keys pasted into a prompt: all of it passes through a server you did not vet.

You may not get the model you pay for. Model swapping is hard to catch. If your outputs suddenly get worse, or your evals drift without a version change, the cause could be a cheaper model behind the same label.

Stolen-card supply means sudden death. When the provider bans the accounts behind a reseller, your service stops with no notice and no refund path.

How to vet a reseller or router:

1. Buy direct from the model provider, or through a major cloud (AWS Bedrock, Google Vertex AI, Azure) under a real contract.
2. If you use a third-party router, read its data-retention policy and confirm it has a published business relationship with the provider.
3. Run a small, fixed eval set every week. A quality drop with no version change is a warning.
4. Never paste secrets into prompts, whatever the vendor.

A price that is 90% below list is not a deal. It is a signal.

Sources: Dealroom summary of The Information's report, The Decoder.