How to Run OpenClaw for Free with OpenRouter
Most people think running an AI agent costs $50-100/month in API fees. That was true in 2024. Today, you can run OpenClaw completely free using OpenRouter and the right models.
Here is exactly how to do it.
What is OpenRouter?
OpenRouter is a unified API that gives you access to hundreds of AI models through a single endpoint. Instead of signing up for OpenAI, Anthropic, Google, and every other provider separately, you use one API key and switch between models instantly.
Why OpenRouter matters: Free models, no per-provider billing, and instant model switching. One key, every model.
The Free Models That Actually Work
OpenRouter offers several free models. Not all of them are good for agents. Here are the ones worth using:
Hunter Alpha (Recommended)
1 Trillion parameters, 1M token context. Built specifically for agentic workflows. Currently free during alpha. This is the best free option for OpenClaw.
MiniMax M2.5
1M context window, good for bulk tasks and long documents. Free tier available.
Qwen3.5 Plus
1M context, solid reasoning. Good fallback when Hunter Alpha is under load.
Step-by-Step Setup
Step 1: Get Your OpenRouter API Key
- Go to openrouter.ai
- Sign up (free, no credit card required)
- Go to openrouter.ai/keys
- Create a new API key
- Copy it (starts with
sk-or-...)
Step 2: Configure OpenClaw
Add your API key to the environment:
Set Hunter Alpha as your default model in the gateway config:
Step 3: Start Using It
That is it. You are now running OpenClaw for free.
Cost Comparison
Traditional Setup
GPT-4o, Claude Sonnet, API overages
OpenRouter Free
Hunter Alpha, MiniMax, Qwen
Want to automate your life?
Check out my OpenClaw Ultimate Setup guide — the complete blueprint for building your personal AI automation system.