Using via OpenRouter

OpenRouter is a unified API gateway that routes requests across hundreds of AI providers. LLMBase models are listed on OpenRouter, so you can access them alongside models from OpenAI, Anthropic, Google, and others — using a single OpenRouter API key.

Endpoint

Use OpenRouter’s base URL instead of LLMBase’s:

https://openrouter.ai/api/v1

Model IDs on OpenRouter

OpenRouter model IDs are the same as LLMBase’s unified model IDs:

LLMBase model	OpenRouter model ID
GLM-5	zai-org/glm-5
GLM-4	zai-org/glm-4

Quick example

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://openrouter.ai/api/v1",
  apiKey: process.env.OPENROUTER_API_KEY,
});

const response = await client.chat.completions.create({
  model: "zai-org/glm-5",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(response.choices[0].message.content);

OpenRouter-specific headers

OpenRouter recommends including two optional headers for analytics and abuse prevention:

const client = new OpenAI({
  baseURL: "https://openrouter.ai/api/v1",
  apiKey: process.env.OPENROUTER_API_KEY,
  defaultHeaders: {
    "HTTP-Referer": "https://yourapp.com",   // your site URL
    "X-Title":      "Your App Name",         // shown in OpenRouter dashboard
  },
});

curl

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "HTTP-Referer: https://yourapp.com" \
  -H "X-Title: Your App" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "zai-org/glm-5",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

When to use OpenRouter vs direct

	Direct (api.llmbase.ai)	Via OpenRouter
Latency	Lower — one fewer hop	Slightly higher
Billing	Billed directly by LLMBase	Billed by OpenRouter
Key management	Separate LLMBase key	Single key for all providers
Model switching	LLMBase models only	Any OpenRouter model
Rate limits	LLMBase limits	OpenRouter limits

Use the direct API when you only need LLMBase models and want the lowest latency. Use OpenRouter when you want a single key and the ability to swap providers without changing code.