{
  "model": {
    "strategy": "best_of", // e.g., "best_of", "round_robin", "cost_optimized"
    "models": [
      {"id": "openai/gpt-4-turbo", "weight": 0.6, "max_cost_per_1k_tokens": 0.03},
      {"id": "anthropic/claude-3-opus", "weight": 0.4, "max_cost_per_1k_tokens": 0.10},
      {"id": "mistralai/mixtral-8x7b-instruct-v01", "max_cost_per_1k_tokens": 0.01}
    ]
  },
  "messages": [...]
}