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Get your API key

1

Create an account

Sign up at opencompress.ai/dashboard.
2

Add funds

Deposit credits via Stripe. Start with $10 to test.
3

Generate an API key

Go to the API Keys section and create a new key. Copy it — it’s shown only once.
Your API key starts with sk-occ- and works like any other LLM API key.

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Integration

OpenCompress is a drop-in replacement for any OpenAI-compatible endpoint. Change two values:
SettingBeforeAfter
Base URLhttps://api.openai.com/v1https://www.opencompress.ai/api/v1
API Keysk-... (OpenAI)sk-occ-... (OpenCompress)
Everything else — model names, message format, streaming, tool calls — stays identical.

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Code examples

from openai import OpenAI

client = OpenAI(
    base_url="https://www.opencompress.ai/api/v1",
    api_key="sk-occ-your-key-here",
)

response = client.chat.completions.create(
    model="gpt-4o-mini",
    messages=[
        {"role": "system", "content": "You are a helpful assistant."},
        {"role": "user", "content": "Explain quantum computing in simple terms."},
    ],
)

print(response.choices[0].message.content)
Your prompts are compressed transparently before reaching the model. The response you receive is identical in format to a direct OpenAI API call.

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What happens behind the scenes

Your App                    OpenCompress                     LLM Provider
   │                            │                                │
   │─── POST /chat/completions ─│                                │
   │    (original prompt)       │                                │
   │                            │── compress prompt ──┐          │
   │                            │                     │          │
   │                            │◄─ compressed ───────┘          │
   │                            │                                │
   │                            │─── forward compressed ────────►│
   │                            │                                │
   │                            │◄── response ──────────────────│
   │◄── response ───────────────│                                │
   │                            │                                │
   │                            │── calculate savings            │
   │                            │── deduct balance               │

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Supported models

OpenCompress works with any model available on OpenRouter:

OpenAI

GPT-4o, GPT-4o-mini, GPT-4.1, GPT-4.1-mini, GPT-4.1-nano

Anthropic

Claude Opus 4.6, Claude Sonnet 4.6, Claude Haiku 4.5

Google

Gemini 2.5 Pro, Gemini 2.5 Flash

Meta

Llama 4 Maverick, Llama 4 Scout

DeepSeek

DeepSeek V3, DeepSeek R1

BYOK

Use your own API key with any provider

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Next steps

How It Works

Understand the compression pipeline

BYOK Mode

Use your own LLM API key