{
  "judge_model": "anthropic/claude-sonnet-4",
  "n_responses_scored": 476,
  "validation_against_human_single_msg_arena": {
    "n_models_overlap": 11,
    "rho_vs_human_arena_elo": -0.0727,
    "p_value": 0.8317,
    "interpretation": "weak / suspect proxy"
  },
  "per_model": {
    "claude_opus_4_6": {
      "engagement_mean": 4.1048,
      "engagement_std": 0.754,
      "n_scored": 21
    },
    "claude_opus_4_7": {
      "engagement_mean": 4.0476,
      "engagement_std": 0.7387,
      "n_scored": 21
    },
    "claude_sonnet_4_5": {
      "engagement_mean": 4.0593,
      "engagement_std": 0.332,
      "n_scored": 27
    },
    "deepseek_v3_2": {
      "engagement_mean": 4.0538,
      "engagement_std": 0.3289,
      "n_scored": 26
    },
    "deepseek_v4_flash": {
      "engagement_mean": 3.94,
      "engagement_std": 0.4512,
      "n_scored": 20
    },
    "deepseek_v4_pro": {
      "engagement_mean": 4.019,
      "engagement_std": 0.296,
      "n_scored": 21
    },
    "gemini_2_5_flash": {
      "engagement_mean": 3.8444,
      "engagement_std": 0.2694,
      "n_scored": 27
    },
    "gemini_3_1_flash_lite": {
      "engagement_mean": 4.019,
      "engagement_std": 0.1965,
      "n_scored": 21
    },
    "gemini_3_1_pro": {
      "engagement_mean": 4.105,
      "engagement_std": 0.2089,
      "n_scored": 20
    },
    "gemma_4_26b": {
      "engagement_mean": 3.7926,
      "engagement_std": 0.7844,
      "n_scored": 27
    },
    "glm_4_7": {
      "engagement_mean": 4.0741,
      "engagement_std": 0.1852,
      "n_scored": 27
    },
    "glm_5_1": {
      "engagement_mean": 4.12,
      "engagement_std": 0.2093,
      "n_scored": 20
    },
    "gpt_4_1": {
      "engagement_mean": 4.0556,
      "engagement_std": 0.2172,
      "n_scored": 27
    },
    "grok_4_1": {
      "engagement_mean": 4.037,
      "engagement_std": 0.3972,
      "n_scored": 27
    },
    "kimi_k2_5": {
      "engagement_mean": 4.2333,
      "engagement_std": 0.1932,
      "n_scored": 21
    },
    "kimi_k2_6": {
      "engagement_mean": 4.1882,
      "engagement_std": 0.2804,
      "n_scored": 17
    },
    "llama_4_maverick": {
      "engagement_mean": 3.5926,
      "engagement_std": 0.5173,
      "n_scored": 27
    },
    "minimax_m2_7": {
      "engagement_mean": 3.6185,
      "engagement_std": 0.988,
      "n_scored": 27
    },
    "mistral_small_creative": {
      "engagement_mean": 4.1444,
      "engagement_std": 0.2259,
      "n_scored": 27
    },
    "qwen3_5_flash": {
      "engagement_mean": 3.92,
      "engagement_std": 0.2769,
      "n_scored": 25
    }
  }
}