Getting Started

Osiris is a multi-model AI API gateway that provides a unified interface for accessing models from OpenAI, Anthropic, Google, and more. It's fully compatible with the OpenAI SDK, so you can get started in minutes.

Quick Start

1

Create an account

Sign up at osiris.ai using your email or Google account.

2

Get your API key

Navigate to your dashboard and create an API key. Keys are prefixed with sk-osiris-.

3

Make your first request

Use any OpenAI-compatible client. Just change the base URL and API key:

curl https://api.osiris.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-osiris-YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o",
    "messages": [{"role": "user", "content": "Hello!"}],
    "max_tokens": 100
  }'

Supported API Formats

Osiris supports three API formats, allowing you to use your preferred client library without any changes:

OpenAI Chat Completions

POST /v1/chat/completions

Anthropic Messages

POST /v1/messages

Responses API

POST /v1/responses

Next Steps

  • Authentication — Learn about API key management and error handling
  • Models — See all available models and pricing multipliers
  • Chat Completions — Full reference for the OpenAI-compatible endpoint