API Overview - OpenCompress

Base URL

https://www.opencompress.ai/api/v1

Authentication

All requests require a Bearer token:

Authorization: Bearer sk-occ-your-key-here

Get your API key from the dashboard.

Compatibility

The OpenCompress API is fully compatible with the OpenAI Chat Completions API. Any SDK, library, or tool that works with OpenAI will work with OpenCompress by changing the base URL.

Available endpoints

Method	Endpoint	Description
`POST`	`/v1/chat/completions`	Create a chat completion (with compression)

Request format

{
  "model": "gpt-4o-mini",
  "messages": [
    {"role": "system", "content": "You are a helpful assistant."},
    {"role": "user", "content": "Your prompt here."}
  ],
  "stream": false
}

Response format

{
  "id": "gen-abc123",
  "object": "chat.completion",
  "created": 1772341560,
  "model": "gpt-4o-mini",
  "choices": [
    {
      "index": 0,
      "finish_reason": "stop",
      "message": {
        "role": "assistant",
        "content": "Response content here."
      }
    }
  ],
  "usage": {
    "prompt_tokens": 18,
    "completion_tokens": 145,
    "total_tokens": 163
  }
}

Token counts in usage reflect the compressed token counts — what the model actually processed. This is what you’re billed for.