{
  "current_version_id": "20260414-165018",
  "promotion_source": null,
  "benchmark_summary": {
    "reward_delta": -0.446,
    "error_rate_delta": 0.0,
    "latency_delta_ms": -21.0,
    "baseline_avg_reward": 0.886,
    "challenger_avg_reward": 0.44
  },
  "prior_version_id": "20260414-155224",
  "saved_at": "2026-04-14T16:50:18.865976+00:00"
}