Show HN: Chinese are offering Claude/Codex offers 90% off

Chinese resellers are offering *Claude and Codex API access at up to 90% discounts* compared with Anthropic and OpenAI’s official API pricing.

I’ve heard that some of them use open-source projects like *Sub2API* to achieve this. Their business model appears to involve purchasing subscription plans in bulk and converting them into API access.

I’ve found several providers, such as *ddshub.cc, yunwu.api, and others*.

What are your thoughts on this business model and its potential risks or sustainability?

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JPLeRouzic 9 hours ago | parent [-]

Do they cache results so users can receive already generated answers?

If the resellers cache results, how it is done? I am aware it's possible with a KV cache, but those resellers do not have access to Claude's KV memory?

If they do not cache results, how does this work?

	▲	JPLeRouzic 6 hours ago \| parent \| next [-]
		Could it be use of a tainted Claude? For example a user query is transformed to filter the request to and the answer from Claude with a local open source model. Use case: A user asks to find a bug in code, they provide a large piece of code (hence a large amount of tokens), it is processed by the retailer with an open source LLM which is asked to extract suspicious snippets, and Claude is asked to provide an exact answer but as short as possible, then the local open source model is asked to incorporate the modifications in the original code. The number of tokens used by Claude is much lower than if the user has asked directly to Claude. The local open source model provides the difference.
	▲	Good4boothee 8 hours ago \| parent \| prev \| next [-]
		Check previous discussion: https://news.ycombinator.com/item?id=49058993 My personal guess is some of those "providers" use inputs/outputs for training "open"weight models.
	▲	iwontberude 9 hours ago \| parent \| prev [-]
		Nope, it’s just simple arbitrage. All of the subscription tiers offer 5-10x better prices than metered api fees. They use subscription to hook people and get them desperate enough to pay for ad-hoc generation outside of their subscription to make a profit. The economics of Claude do not work unless a significant % of subscribers convert to standard metered API use. They are trying any trick under the sun to make this happen.