Prepaid AI API credits for multi-model access

Duang Duang gives developers one API key for routing requests across supported AI model providers. Customers buy prepaid credits, track usage, and choose budget, standard, or premium model tiers.

Open dashboard Contact sales

POST /v1/chat/completions
Authorization: Bearer sk-relay_...

{
  "model": "budget",
  "messages": [
    {"role": "user", "content": "Summarize this document"}
  ]
}

What we offer

Unified API

Use one API interface and one customer key to access supported model providers through a managed gateway.

Prepaid credits

Buy credits before use, avoid surprise invoices, and monitor balance and token usage in real time.

Model routing

Choose budget, standard, or premium tiers depending on cost, speed, and quality needs.

Pricing

Budget

Lower-cost routing for high-volume text workloads.

Prepaid usage

Standard

Balanced routing for everyday application workloads.

Prepaid usage

Premium

Higher-capability models for more complex reasoning and writing tasks.

Prepaid usage

Compliance and support

Usage controls

Accounts have credit balances, API keys, rate limits, and usage logs.

Policies

Customers must follow our Terms, Privacy Policy, Refund Policy, Acceptable Use Policy, and upstream provider rules.

Contact

Support email: support@duang-duang.com.

Terms of Service

Duang Duang provides prepaid API credits and a software gateway for accessing supported AI model providers through a unified API. Customers are responsible for keeping API keys secure and for all usage made through their keys.

Credits are prepaid and deducted based on model usage, including input tokens, output tokens, and applicable pricing rules. Customers must follow applicable upstream provider policies and legal requirements. Duang Duang does not grant permission to bypass provider restrictions, rate limits, or safety policies.

Privacy Policy

We collect account information, API key metadata, payment records, usage records, and technical logs needed to operate the service. We record token usage, selected models, request status, provider cost, billed amount, and timestamps.

Payment processing is handled by Stripe. We do not store full card numbers on our servers. We may share necessary request data with upstream AI model providers to fulfill API requests.

Refund Policy

Prepaid credits are generally refundable only for unused balances, billing errors, duplicate charges, or service issues reviewed by support. Credits consumed by API usage are not refundable unless the usage was caused by a confirmed platform error.

Refund requests should include the account email, payment date, amount, and reason. Contact support@duang-duang.com.

Acceptable Use Policy

Customers must use Duang Duang lawfully and in compliance with upstream AI provider policies. Prohibited uses include illegal activity, fraud, credential theft, phishing, malware, harassment, attempts to bypass provider restrictions, and automated activity that harms service stability or violates rate limits.

We may throttle, suspend, or terminate accounts and API keys that violate this policy. Report abuse to support@duang-duang.com.