ARCANAOpenRouter
OpenRouter is a unified API gateway that gives you access to 100+ models from multiple providers with a single API key. Great for trying different models without managing multiple provider accounts.
Setup
# 1. Get your API key from https://openrouter.ai/keys
export OPENROUTER_API_KEY=sk-or-...
# 2. Verify detection
arcana doctor
# 3. Run
arcana run "hello"Available Models
OpenRouter provides access to models from OpenAI, Anthropic, Google, Meta, Mistral, and many more. Some highlights:
| Model | Provider | Context | Best For |
|---|---|---|---|
openai/gpt-4o | OpenAI | 128K | General purpose |
anthropic/claude-sonnet-4 | Anthropic | 200K | Coding, long context |
google/gemini-2.5-pro | 1M | Large context analysis | |
meta-llama/llama-3.1-405b-instruct | Meta | 128K | Open-weight, free tier |
deepseek/deepseek-chat | DeepSeek | 128K | Very cheap coding |
Config File
{
"provider": "openrouter",
"model": "openai/gpt-4o"
}Note: OpenRouter model IDs include the provider prefix (e.g., openai/gpt-4o).
Environment Variables
| Variable | Description |
|---|---|
OPENROUTER_API_KEY | Your OpenRouter API key (required) |
Pricing Notes
OpenRouter charges the same as the underlying provider plus a small markup (typically 5-10%). Some models have free tiers. Check openrouter.ai/models for current pricing.
Tips
- Use OpenRouter to try multiple providers without creating separate accounts
- The free tier includes access to some open-weight models
- Model IDs include the provider prefix (e.g.,
anthropic/claude-sonnet-4) - Great for experimentation — switch models mid-session with
/providers