I Built a Zero-Markup AI API Gateway - 18 Models at Provider Cost

A developer built aipossword.cn, an open-source AI API gateway that offers 18 models at provider cost with zero markup. The platform, forked from New API, aims to eliminate hidden fees by charging enterprise users for premium features while keeping individual developer access free.

Every AI API gateway I tried added an invisible margin. OpenRouter, the biggest player, quietly marks up every model. You pay more than the provider charges, and you don't even know how much. I built aipossword.cn https://aipossword.cn — an open-source AI API gateway with zero markup pricing. | Model | Input/1M | Output/1M | |---|---|---| | DeepSeek V4 Pro | $0.20 | $0.87 | | DeepSeek V4 Flash | $0.10 | $0.20 | | Claude Opus 4.6 | $15.00 | $75.00 | | Claude Opus 4.7 | $15.00 | $75.00 | | Qwen 3.7 Max | $1.25 | $3.75 | curl https://api.aipossword.cn/v1/chat/completions \ -H "Authorization: Bearer YOUR KEY" \ -d '{"model":"deepseek-v4-flash","messages": {"role":"user","content":"Hello"} }' I got tired of paying hidden fees on every API call. So I forked New API 18k stars , connected 18 models, and set markup to zero. Is zero markup sustainable? I think the answer is yes — if enterprise users pay for SSO, SLA, and dedicated infrastructure. Individual developers get it free, at cost. Visit aipossword.cn https://aipossword.cn — free $5 credits, no credit card required. Source: github.com/QuantumNous/new-api https://github.com/QuantumNous/new-api