OpenAI Compatible

One shared API for multiple AI models

LLM API for GPT, Claude, and Gemini

Integrate GPT, Claude, Gemini, and more through an OpenAI-compatible API with clear token pricing and a setup built for real production workloads.

Client setup guide Open Console Ckey Chat Sell your API
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Have your own LLM API? Sell it on Ckey

Register your API in the marketplace, billing is automated, get paid per successful request.

Sell your API

Per-model pricing

Model Input / 1M Output / 1M Per request Context Usage

Quickstart API

Use the shared /v1 base URL, pick the model you want, and call the route your client needs such as chat/completions, responses, embeddings, images/generations, video/generations, audio/speech, or models. The examples below adapt automatically to the selected model type.

Base URL

https://ckey.vn/v1
Client setup guide

Quickstart API key

YOUR_API_KEY

Login to auto-fill your API key in examples.

Model
gpt-4o-mini
Example route
https://ckey.vn/v1/chat/completions

cURL example

JavaScript example

Getting started

  • 1. Add balance to your account.
  • 2. Get your API key in API AI Console.
  • 3. Call a route that the model actually supports, such as /v1/chat/completions, /v1/embeddings, /v1/images/generations, /v1/video/generations, or /v1/models.
  • 4. Monitor input/output tokens and spend in Console.