Crazyrouter Node.js SDK

One API key for 300+ AI models. Drop-in replacement for the OpenAI SDK.

Access GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro, DeepSeek V3.2, and 300+ more models through a single API — up to 50% cheaper than going direct.

Installation

npm install crazyrouter

Quick Start

import Crazyrouter from "crazyrouter";

const client = new Crazyrouter({ apiKey: "sk-xxx" });

// GPT-5.4
const gpt = await client.chat.completions.create({
  model: "gpt-5.4",
  messages: [{ role: "user", content: "Explain quantum computing" }],
});

// Claude Opus 4.6 — same API, just change the model name
const claude = await client.chat.completions.create({
  model: "claude-opus-4-6",
  messages: [{ role: "user", content: "Explain quantum computing" }],
});

// Gemini 3.1 Pro
const gemini = await client.chat.completions.create({
  model: "gemini-3.1-pro-preview",
  messages: [{ role: "user", content: "Explain quantum computing" }],
});

Why Crazyrouter?

| Feature | Crazyrouter | Direct APIs | OpenRouter | |---------|-------------|-------------|------------| | Models | 300+ | 1 per provider | 300+ | | API Keys | 1 | Multiple | 1 | | Pricing | Up to 50% cheaper | Full price | +10-30% markup | | OpenAI Compatible | ✅ | ❌ | ✅ | | SDK Compatibility | Drop-in | N/A | Custom |

Supported Models

• OpenAI: GPT-5.4, GPT-5.2, GPT-5, GPT-4o, GPT-4.1, o3, o4-mini
• Anthropic: Claude Opus 4.6, Sonnet 4.6, Haiku 4.5
• Google: Gemini 3.1 Pro, Gemini 3 Pro, Gemini 2.5 Pro/Flash
• DeepSeek: V3.2, V3.1, R1
• And 280+ more...

Full model list →

Helper Functions

import { listModels, chat } from "crazyrouter";

// List all available models
const models = await listModels("sk-xxx");

// Quick one-liner chat
const answer = await chat("sk-xxx", "gpt-5.4", "What is 2+2?");

Streaming

const stream = await client.chat.completions.create({
  model: "claude-opus-4-6",
  messages: [{ role: "user", content: "Write a poem" }],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content || "");
}

Migration from OpenAI SDK

- import OpenAI from "openai";
+ import Crazyrouter from "crazyrouter";

- const client = new OpenAI({ apiKey: "sk-openai-xxx" });
+ const client = new Crazyrouter({ apiKey: "sk-crazyrouter-xxx" });

// Everything else stays the same!

Links

• 🌐 Website
• 📖 Documentation
• 💰 Pricing
• 🤖 Models
• 💬 Telegram Community
• 🐙 GitHub

License

MIT © Crazyrouter