I built a tiny $10 prepaid API for Qwen2.5-14B (OpenAI-compatible)

说明与用途

一个试点预付费 API，允许用户通过 OpenAI 兼容端点购买 $10 套餐使用 Qwen2.5‑14B，按 token 计费并通过 Polar 结算。

问题

Providing affordable, prepaid inference access to a large language model without GPU rental or cloud console reselling.

结果

The POC demonstrates a low‑cost, prepaid inference service, enabling quick monetization of the Qwen model without complex infrastructure.

工作流

• 1. User visits landing page and selects $10 pack.
• 2. User completes checkout via Polar payment gateway.
• 3. System issues a unique API key tied to the prepaid balance.
• 4. User sends POST /v1/chat/completions requests to the gateway.
• 5. Gateway authenticates key, tracks input/output tokens, and deducts cost ($0.70/M input, $1.40/M output).
• 6. When balance reaches zero, API key is disabled until next purchase.

证据

OpenAI-compatible POST /v1/chat/completions

来源

$10 pack (~$9 usable after Polar fee)

来源