No foreign credit card needed. Top up with USDT or card, pay only for what you use. Fully OpenAI-compatible — change one line and your existing code works.
from openai import OpenAI
client = OpenAI(
base_url="https://vantixcloud.com/v1",
api_key="vx-your-key-here",
)
resp = client.chat.completions.create(
model="claude-sonnet-4-6",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)
USD per 1M tokens · billed per token, no minimum, no monthly fee.
| Model | Provider | Input | Output |
|---|---|---|---|
| claude-sonnet-4-6 | Anthropic | $3.45 | $17.25 |
| claude-haiku-4-5 | Anthropic | $1.15 | $5.75 |
| claude-opus-4-7 | Anthropic | $17.25 | $86.25 |
| gpt-4o | OpenAI | $2.88 | $11.50 |
| gpt-4o-mini | OpenAI | $0.17 | $0.69 |
| deepseek-chat | DeepSeek | $0.31 | $1.27 |
| deepseek-reasoner | DeepSeek | $0.63 | $2.52 |
No. That is the point of this service. You can top up with USDT (TRC20/ERC20) or a regular card through our payment processor, and use Claude, GPT or DeepSeek immediately.
Is it really OpenAI-compatible?Yes. Set base_url to https://vantixcloud.com/v1 and use your vx- key as the api_key. Existing OpenAI SDK code, LangChain, and most tools work unchanged.
How is billing calculated?Per token, at the rates in the table above. Every response returns your exact cost and remaining balance in the X-Vantix-Cost-USD and X-Vantix-Balance-USD headers. No subscription, no minimum.
Is there a free trial?Yes — every new key comes with free trial credit so you can verify it works before paying anything.