List available language models

curl --request GET \
  --url https://api.case.dev/llm/v1/models \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "casemark/contract-analyzer",
      "object": "model",
      "created": 1678886400,
      "owned_by": "casemark",
      "pricing": {
        "input": "0.000001000",
        "output": "0.000003000"
      }
    },
    {
      "id": "gpt-4o",
      "object": "model",
      "created": 1678886400,
      "owned_by": "openai",
      "pricing": {
        "input": "0.000005000",
        "output": "0.000015000"
      }
    },
    {
      "id": "claude-3-5-sonnet-20241022",
      "object": "model",
      "created": 1678886400,
      "owned_by": "anthropic",
      "pricing": {
        "input": "0.000003000",
        "output": "0.000015000",
        "input_cache_read": "0.000000300"
      }
    }
  ],
  "object": "list"
}