openrouter-fallback-config

# OpenRouter Fallback Config ## Overview OpenRouter supports native model fallbacks: pass multiple model IDs and OpenRouter tries each in order until one succeeds. You can also use `provider.order` to control which provider serves a specific model. This skill covers native fallbacks, provider routing, client-side fallback chains, and timeout configuration. ## Native Model Fallback (Server-Side) ```python import os from openai import OpenAI client = OpenAI( base_url="https://openrouter.ai/api/v1", api_key=os.environ["OPENROUTER_API_KEY"], default_headers={"HTTP-Referer": "https://my-app.com", "X-Title": "my-app"}, ) # Pass multiple models -- OpenRouter tries each in order response = client.chat.completions.create( model="anthropic/claude-3.5-sonnet", # Primary (used for param validation) messages=[{"role": "user", "content": "Explain recursion"}], max_tokens=500, extra_body={ "models": [ "anthropic/claude-3.5-sonnet", "openai/gpt-4o", "google/gemini-2.0-flash-001", ], "route": "fallback", # Try in order until one succeeds }, ) # Check which model actually served the request print(f"Served by: {response.model}") ``` ## Provider Fallback (Same Model, Different Providers) ```python # Route to specific providers in priority order response = client.chat.completions.create( model="anthropic/claude-3.5-sonnet", messages=[{"role": "user", "content": "Hello"}], max_tokens=...