{
  "campaign_id": "2026-07-06-v2",
  "tiers": [
    {
      "view_id": "saturation/128-nonstream",
      "path": "views/saturation/128-nonstream.json",
      "tier": {
        "size": "128",
        "mode": "nonstream",
        "scenario_label": "overhead-128-nonstream",
        "size_source": "label_lookup",
        "size_crosscheck_ok": true
      }
    },
    {
      "view_id": "saturation/128-stream",
      "path": "views/saturation/128-stream.json",
      "tier": {
        "size": "128",
        "mode": "stream",
        "scenario_label": "overhead-128-stream",
        "size_source": "label_lookup",
        "size_crosscheck_ok": true
      }
    },
    {
      "view_id": "saturation/12k-nonstream",
      "path": "views/saturation/12k-nonstream.json",
      "tier": {
        "size": "12k",
        "mode": "nonstream",
        "scenario_label": "bench-nonstream",
        "size_source": "label_lookup",
        "size_crosscheck_ok": true
      }
    },
    {
      "view_id": "saturation/12k-stream",
      "path": "views/saturation/12k-stream.json",
      "tier": {
        "size": "12k",
        "mode": "stream",
        "scenario_label": "bench-stream",
        "size_source": "label_lookup",
        "size_crosscheck_ok": true
      }
    },
    {
      "view_id": "saturation/550-nonstream",
      "path": "views/saturation/550-nonstream.json",
      "tier": {
        "size": "550",
        "mode": "nonstream",
        "scenario_label": "chat-550-nonstream",
        "size_source": "label_lookup",
        "size_crosscheck_ok": true
      }
    },
    {
      "view_id": "saturation/550-stream",
      "path": "views/saturation/550-stream.json",
      "tier": {
        "size": "550",
        "mode": "stream",
        "scenario_label": "chat-550-stream",
        "size_source": "label_lookup",
        "size_crosscheck_ok": true
      }
    }
  ],
  "gateways": [
    "bifrost",
    "litellm",
    "nexus-hooks-off",
    "nexus-hooks-on"
  ],
  "meta": {
    "story": "saturation",
    "load_model": "closed_loop",
    "comparable": false,
    "not_comparable_reason": "records carry no versions lock, so no two of them are provably comparable",
    "publishable": false,
    "withheld_reasons": [
      "PUB-01",
      "PUB-03"
    ],
    "versions_lock_id": null,
    "provenance_id": null,
    "noise_floor_pct": null,
    "methodology": "docs/methodology/methodology.md",
    "criteria": "docs/methodology/invalidation-criteria.md",
    "publisher_commit": "344fa22",
    "disclosure": "Vendor-operated benchmark. Nexus is our product. The method, the harness, the load generator, the mock upstream, and this site are all open source so that every number here can be re-run and disputed.",
    "load_model_label": "Closed loop, stepped concurrency. Offered load is a function of each gateway's own speed, so these figures describe throughput capacity and MUST NOT be read as a cross-gateway latency comparison."
  }
}