{
  "name": "The Alpha Line Report",
  "url": "https://www.hunteralphahub.com/alpha-line-report",
  "publisher": "Hunter Alpha Hub",
  "licence": "CC BY 4.0",
  "terms": "Free to quote, chart and reprint with a link to https://www.hunteralphahub.com/alpha-line-report. Cite as: Hunter Alpha Hub, “The Alpha Line Report”, hunteralphahub.com/alpha-line-report, read 2026-09-22.",
  "subject": "Anonymous stealth model releases on OpenRouter, 2026",
  "measured": "2026-09-22",
  "note": "Dates and prices are read from the public OpenRouter catalogue and re-checked by `npm run sync-models`. Day counts are whole days between the two dates in each row, computed at build time.",
  "summary": {
    "codenames": 3,
    "medianDaysToMakerListing": 6,
    "daysToListing": [
      41,
      6,
      1
    ],
    "fastestDays": 1,
    "slowestDays": 41,
    "freeWhileAnonymous": 3,
    "freeNow": 0,
    "inputPriceFloorPerMillion": 0.14,
    "inputPriceCeilingPerMillion": 2.5,
    "priceSpreadFactor": 17.9,
    "gapsBetweenCodenamesDays": [
      {
        "from": "Hunter Alpha",
        "to": "OX Alpha",
        "days": 161
      },
      {
        "from": "OX Alpha",
        "to": "Union Alpha",
        "days": 27
      }
    ]
  },
  "rows": [
    {
      "codename": "Hunter Alpha",
      "page": "https://www.hunteralphahub.com/hunter-alpha",
      "firstListed": "2026-03-12",
      "makerListingAdded": "2026-04-22",
      "identityDisclosed": "2026-03-23",
      "daysToListing": 41,
      "turnedOutToBe": "Xiaomi MiMo-V2.5",
      "modelId": "xiaomi/mimo-v2.5",
      "contextWindow": 1050000,
      "modalities": "Text, image, audio, video",
      "freeWhileAnonymous": true,
      "freeNow": false,
      "pricePerMillion": {
        "input": 0.14,
        "output": 0.28,
        "cachedInput": 0.0028
      },
      "priceStory": "Free for 11 days, then disclosed and repriced. The listing under Xiaomi's own name appeared 30 days after that."
    },
    {
      "codename": "OX Alpha",
      "page": "https://www.hunteralphahub.com/ox-alpha",
      "firstListed": "2026-08-20",
      "makerListingAdded": "2026-08-26",
      "identityDisclosed": null,
      "daysToListing": 6,
      "turnedOutToBe": "Z.ai GLM 5.3 Flash",
      "modelId": "z-ai/glm-5.3-flash",
      "contextWindow": 1310720,
      "modalities": "Text, image, video",
      "freeWhileAnonymous": true,
      "freeNow": false,
      "pricePerMillion": {
        "input": 0.15,
        "output": 0.5,
        "cachedInput": 0.05
      },
      "priceStory": "Free while anonymous, repriced at the reveal, then repriced again on 2026-09-22: input up 67%, output up 67%, cached input up 178%."
    },
    {
      "codename": "Union Alpha",
      "page": "https://www.hunteralphahub.com/union-alpha",
      "firstListed": "2026-09-16",
      "makerListingAdded": "2026-09-17",
      "identityDisclosed": "2026-09-18",
      "daysToListing": 1,
      "turnedOutToBe": "Unbiased Pareto",
      "modelId": "unbiased/pareto",
      "contextWindow": 262144,
      "modalities": "Text, image",
      "freeWhileAnonymous": true,
      "freeNow": false,
      "pricePerMillion": {
        "input": 2.5,
        "output": 7.5,
        "cachedInput": 0.25
      },
      "priceStory": "Free for two days, then delisted and repriced at 18x the input price of the cheapest model in the line."
    }
  ]
}