plano/demos/llm_routing/model_routing_service/test.rest

### Code generation query (OpenAI format) — expects anthropic/claude-sonnet
POST http://localhost:12000/routing/v1/chat/completions
Content-Type: application/json

{
  "model": "gpt-4o-mini",
  "messages": [{"role": "user", "content": "Write a Python function for binary search"}]
}

### Complex reasoning query (OpenAI format) — expects openai/gpt-4o
POST http://localhost:12000/routing/v1/chat/completions
Content-Type: application/json

{
  "model": "gpt-4o-mini",
  "messages": [{"role": "user", "content": "Analyze the trade-offs between microservices and monolithic architecture"}]
}

### Simple query — no routing match, expects default model
POST http://localhost:12000/routing/v1/chat/completions
Content-Type: application/json

{
  "model": "gpt-4o-mini",
  "messages": [{"role": "user", "content": "Hello"}]
}

### Code generation query (Anthropic format)
POST http://localhost:12000/routing/v1/messages
Content-Type: application/json

{
  "model": "claude-sonnet-4-20250514",
  "max_tokens": 1024,
  "messages": [{"role": "user", "content": "Write a REST API in Go using Gin"}]
}