DoppAPI gives you the exact same frontier models at twice the tokens for the same money. Here's exactly how the pipeline works — from your crypto payment to your first API call.
You send USDT / BTC / ETH for the plan you picked on the landing page.
We create a fresh, isolated API key and fund it to exactly 2× the value you paid. Nothing more, nothing less.
Set the base URL + your key in any OpenAI-compatible SDK, Cursor, or Claude Code. Start calling models.
Your key is funded through a relay that sources model access at a fraction of the standard rate. We pass that saving straight to you: every dollar you spend becomes twice the tokens you'd get paying the provider directly. The models are the same — GPT-5.5 Pro, Claude Opus 4, O3-Pro, Gemini, Grok — only the volume you receive is doubled.
Example: $5 on the official API buys ~2.4M GPT-5.5 Pro input tokens. The same $5 on DoppAPI buys ~4.8M. Same model. Half the effective cost.
This is what keeps you safe:
Hard cap. Your key is funded to an exact balance. When it hits zero, calls stop. It can never go negative — you can't accidentally overspend.
Model lock. The key is restricted to the DoppAPI catalog. It can't call anything off-list.
Live meter. See remaining balance anytime at cx.tpkcur.click — enter your key, see tokens left.
IP bind (optional). Lock the key to your server IPs so a leaked key is useless elsewhere.
DoppAPI is OpenAI-compatible. Drop the base URL and your key into whatever you already use:
# any OpenAI SDK
from openai import OpenAI
client = OpenAI(
base_url="https://yunwu.ai/v1",
api_key="YOUR_DOPP_KEY"
)
client.chat.completions.create(
model="gpt-5.5-pro",
messages=[{"role":"user","content":"Hello"}]
)
Works in Cursor, Claude Code, LangChain, and any tool that takes a base_url + api_key.
When your balance runs low, send another crypto payment and we top up the same key — or mint a new one. Payments are in cryptocurrency and final. For help, reach us on Telegram (link on the landing page).