OpenRouter Top-Up Guide — Call Every Major LLM API from One Account (2026)
GPT, Claude, Gemini and open-source models through a single API. Here's how to add credits to OpenRouter even without a US bank account — or pay with USDT/USDC.
1. Why use OpenRouter
One API key gives you hundreds of models (GPT, Claude, Gemini, Llama, DeepSeek and more) with unified billing, automatic routing and easy side-by-side comparison. It's the go-to for developers who don't want to register and fund a separate account with every provider.
2. How billing works
You prepay credits and pay per use, with transparent per-model pricing you can compare at a glance. It's simpler than opening API accounts at each provider, and the cost of experimenting is tiny — you can start with as little as $5.
3. What you need
openrouter.ai is generally accessible worldwide. Funding requires a card or crypto — and if your local card is declined, a US-segment Visa card or a crypto balance solves it. The cocodot card and on-chain USDT/USDC both work here.
4. Adding credits
Sign up → Credits → Add credits → pay with your cocodot card (or choose the crypto option). Generate an API key and use it in any client that speaks the OpenAI-compatible format.
5. Keeping costs down
Route everyday tasks to cheaper models and reserve flagship models for the hard ones; set a usage limit so nothing runs away. Your cocodot card balance acts as a second hard cap on spend.