Build with one API

Access 200+ AI models across 15+ providers through a single endpoint. No model picker. No key management. Just ship.

POST /v1/chat/completions GreatRouter
curl https://api.greatrouterai.com/v1/chat/completions \
  -H "Authorization: Bearer $ROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "auto",
    "messages": [
      { "role": "user", "content": "Summarize the GreatApps ecosystem in one paragraph." }
    ]
  }'

Built for shipping, not for config files

Three primitives that replace the entire model-picker workflow.

Single Endpoint

One URL. One API key. Every model you need — from frontier LLMs to image, video, and music generators — accessible through the same request shape.

OpenAI Compatible

Drop our base URL into any OpenAI SDK and ship today. Chat, vision, function calling, and streaming all work without rewrites.

Auto Routing

Pass a task description. GreatRouter picks the best model for the job based on price, quality, and capability filters. No more model pickers.

From signup to first request in 3 minutes

01

Get your API key

Sign up for a free account and generate an API key from the dashboard. No credit card required.

02

Make your first request

Swap the base URL in your OpenAI client. Send a chat completion to /v1/chat/completions. That's it.

03

Deploy to production

Use the same code in production. Routing, fallbacks, and cost optimization work the same at any scale.

Everything you need to ship

Internal

Integrations

Connect your stack with 100+ OAuth integrations.

Open
Internal

SDKs & Libraries

Official client libraries for Python, JS, Go, Ruby.

Open
External

API Reference

Full endpoint docs, code samples, and recipes.

Open

Start building

Free to start. 200+ models. One API key. No model pickers, no key management, no rate-limit headaches.