{
  "api_version": "1",
  "updated": "2026-10-23",
  "latest_event": "2026-10-22",
  "rights": "© Frontier Log, all rights reserved.",
  "total": 18,
  "events": [
    {
      "slug": "2025-04-02-quasar-alpha",
      "date": "2025-04-02",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Quasar Alpha (stealth)",
      "detail": "Cloaked 1M-context model on OpenRouter, free to test; revealed as an early test of GPT-4.1.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-04-10-optimus-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/quasar-alpha",
      "source_title": "Quasar Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-04-14-gpt-4-1",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/blog/announcements/quasar-alpha-and-optimus-alpha-reveal/",
      "url": "https://frontierlog.ai/event/2025-04-02-quasar-alpha",
      "image": "https://frontierlog.ai/og/2025-04-02-quasar-alpha.png"
    },
    {
      "slug": "2025-04-10-optimus-alpha",
      "date": "2025-04-10",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Optimus Alpha (stealth)",
      "detail": "Second cloaked 1M-context model on OpenRouter; revealed as another test of GPT-4.1.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-04-02-quasar-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/optimus-alpha",
      "source_title": "Optimus Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-04-14-gpt-4-1",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/blog/announcements/quasar-alpha-and-optimus-alpha-reveal/",
      "url": "https://frontierlog.ai/event/2025-04-10-optimus-alpha",
      "image": "https://frontierlog.ai/og/2025-04-10-optimus-alpha.png"
    },
    {
      "slug": "2025-07-01-cypher-alpha",
      "date": "2025-07-01",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Cypher Alpha (stealth)",
      "detail": "Cloaked 1M-context model on OpenRouter with native tool calling; its lab is not revealed.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/cypher-alpha",
      "source_title": "Cypher Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": null,
      "url": "https://frontierlog.ai/event/2025-07-01-cypher-alpha",
      "image": "https://frontierlog.ai/og/2025-07-01-cypher-alpha.png"
    },
    {
      "slug": "2025-07-30-horizon-alpha",
      "date": "2025-07-30",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Horizon Alpha (stealth)",
      "detail": "Cloaked 256K-context model on OpenRouter with image input; revealed as an earlier iteration of GPT-5.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-08-01-horizon-beta"
      ],
      "source": "https://openrouter.ai/openrouter/horizon-alpha",
      "source_title": "Horizon Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-08-07-gpt-5",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/blog/announcements/gpt-5-is-now-live/",
      "url": "https://frontierlog.ai/event/2025-07-30-horizon-alpha",
      "image": "https://frontierlog.ai/og/2025-07-30-horizon-alpha.png"
    },
    {
      "slug": "2025-08-01-horizon-beta",
      "date": "2025-08-01",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Horizon Beta (stealth)",
      "detail": "Improved version of Horizon Alpha on OpenRouter, 256K context; revealed as an earlier GPT-5.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-07-30-horizon-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/horizon-beta",
      "source_title": "Horizon Beta",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-08-07-gpt-5",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/blog/announcements/gpt-5-is-now-live/",
      "url": "https://frontierlog.ai/event/2025-08-01-horizon-beta",
      "image": "https://frontierlog.ai/og/2025-08-01-horizon-beta.png"
    },
    {
      "slug": "2025-09-05-sonoma-dusk-alpha",
      "date": "2025-09-05",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Sonoma Dusk Alpha (stealth)",
      "detail": "Faster sibling of Sonoma Sky, 2M context; revealed as an early test version of Grok 4 Fast.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-09-05-sonoma-sky-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/sonoma-dusk-alpha",
      "source_title": "Sonoma Dusk Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/sonoma-dusk-alpha",
      "url": "https://frontierlog.ai/event/2025-09-05-sonoma-dusk-alpha",
      "image": "https://frontierlog.ai/og/2025-09-05-sonoma-dusk-alpha.png"
    },
    {
      "slug": "2025-09-05-sonoma-sky-alpha",
      "date": "2025-09-05",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Sonoma Sky Alpha (stealth)",
      "detail": "Cloaked 2M-context model on OpenRouter; revealed as an early test version of Grok 4 Fast.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-09-05-sonoma-dusk-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/sonoma-sky-alpha",
      "source_title": "Sonoma Sky Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/sonoma-sky-alpha",
      "url": "https://frontierlog.ai/event/2025-09-05-sonoma-sky-alpha",
      "image": "https://frontierlog.ai/og/2025-09-05-sonoma-sky-alpha.png"
    },
    {
      "slug": "2025-10-21-andromeda-alpha",
      "date": "2025-10-21",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Andromeda Alpha (stealth)",
      "detail": "Cloaked small reasoning vision model on OpenRouter; revealed as NVIDIA Nemotron Nano 2 VL.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/andromeda-alpha",
      "source_title": "Andromeda Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-10-28-nemotron-nano-2-vl",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/andromeda-alpha",
      "url": "https://frontierlog.ai/event/2025-10-21-andromeda-alpha",
      "image": "https://frontierlog.ai/og/2025-10-21-andromeda-alpha.png"
    },
    {
      "slug": "2025-11-06-polaris-alpha",
      "date": "2025-11-06",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Polaris Alpha (stealth)",
      "detail": "Cloaked 256K-context model on OpenRouter; revealed as an early GPT-5.1 snapshot.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/polaris-alpha",
      "source_title": "Polaris Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-11-12-gpt-5-1",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/polaris-alpha",
      "url": "https://frontierlog.ai/event/2025-11-06-polaris-alpha",
      "image": "https://frontierlog.ai/og/2025-11-06-polaris-alpha.png"
    },
    {
      "slug": "2025-11-15-sherlock-dash-alpha",
      "date": "2025-11-15",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Sherlock Dash Alpha (stealth)",
      "detail": "Non-reasoning sibling of Sherlock Think; revealed as Grok 4.1 Fast with reasoning disabled.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-11-15-sherlock-think-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/sherlock-dash-alpha",
      "source_title": "Sherlock Dash Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/sherlock-dash-alpha",
      "url": "https://frontierlog.ai/event/2025-11-15-sherlock-dash-alpha",
      "image": "https://frontierlog.ai/og/2025-11-15-sherlock-dash-alpha.png"
    },
    {
      "slug": "2025-11-15-sherlock-think-alpha",
      "date": "2025-11-15",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Sherlock Think Alpha (stealth)",
      "detail": "Cloaked 1.84M-context reasoning model on OpenRouter; revealed as an early Grok 4.1 Fast.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2025-11-15-sherlock-dash-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/sherlock-think-alpha",
      "source_title": "Sherlock Think Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/sherlock-think-alpha",
      "url": "https://frontierlog.ai/event/2025-11-15-sherlock-think-alpha",
      "image": "https://frontierlog.ai/og/2025-11-15-sherlock-think-alpha.png"
    },
    {
      "slug": "2025-11-24-bert-nebulon-alpha",
      "date": "2025-11-24",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Bert-Nebulon Alpha (stealth)",
      "detail": "Cloaked multimodal 256K-context model on OpenRouter; revealed as an early Mistral Large 3.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/bert-nebulon-alpha",
      "source_title": "Bert-Nebulon Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2025-12-02-mistral-3",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/bert-nebulon-alpha",
      "url": "https://frontierlog.ai/event/2025-11-24-bert-nebulon-alpha",
      "image": "https://frontierlog.ai/og/2025-11-24-bert-nebulon-alpha.png"
    },
    {
      "slug": "2026-02-06-pony-alpha",
      "date": "2026-02-06",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Pony Alpha (stealth)",
      "detail": "Cloaked coding and agentic model on OpenRouter; revealed as an early testing version of GLM-5.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/pony-alpha",
      "source_title": "Pony Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2026-02-12-glm-5",
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/pony-alpha",
      "url": "https://frontierlog.ai/event/2026-02-06-pony-alpha",
      "image": "https://frontierlog.ai/og/2026-02-06-pony-alpha.png"
    },
    {
      "slug": "2026-02-09-aurora-alpha",
      "date": "2026-02-09",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Aurora Alpha (stealth)",
      "detail": "Cloaked reasoning model built for speed on OpenRouter, 128K context; its lab is not revealed.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/aurora-alpha",
      "source_title": "Aurora Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": null,
      "url": "https://frontierlog.ai/event/2026-02-09-aurora-alpha",
      "image": "https://frontierlog.ai/og/2026-02-09-aurora-alpha.png"
    },
    {
      "slug": "2026-03-11-healer-alpha",
      "date": "2026-03-11",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Healer Alpha (stealth)",
      "detail": "Cloaked omni-modal model taking text, image, audio and video; revealed as Xiaomi MiMo-V2-Omni.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2026-03-11-hunter-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/healer-alpha",
      "source_title": "Healer Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/healer-alpha",
      "url": "https://frontierlog.ai/event/2026-03-11-healer-alpha",
      "image": "https://frontierlog.ai/og/2026-03-11-healer-alpha.png"
    },
    {
      "slug": "2026-03-11-hunter-alpha",
      "date": "2026-03-11",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Hunter Alpha (stealth)",
      "detail": "Cloaked 1T-parameter, 1M-context agentic model on OpenRouter; revealed as Xiaomi MiMo-V2-Pro.",
      "tags": [
        "stealth"
      ],
      "related": [
        "2026-03-11-healer-alpha"
      ],
      "source": "https://openrouter.ai/openrouter/hunter-alpha",
      "source_title": "Hunter Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/hunter-alpha",
      "url": "https://frontierlog.ai/event/2026-03-11-hunter-alpha",
      "image": "https://frontierlog.ai/og/2026-03-11-hunter-alpha.png"
    },
    {
      "slug": "2026-04-13-elephant-alpha",
      "date": "2026-04-13",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Elephant Alpha (stealth)",
      "detail": "Cloaked 100B-parameter text model, 256K context; revealed as inclusionAI's Ling-2.6-flash.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/elephant-alpha",
      "source_title": "Elephant Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": null,
      "stealth_previews": [],
      "reveal_source": "https://openrouter.ai/openrouter/elephant-alpha",
      "url": "https://frontierlog.ai/event/2026-04-13-elephant-alpha",
      "image": "https://frontierlog.ai/og/2026-04-13-elephant-alpha.png"
    },
    {
      "slug": "2026-04-28-owl-alpha",
      "date": "2026-04-28",
      "provider": "openrouter",
      "kind": "model",
      "importance": "minor",
      "title": "Owl Alpha (stealth)",
      "detail": "Cloaked agentic model on OpenRouter with 1M context; revealed as Meituan's LongCat-2.0.",
      "tags": [
        "stealth"
      ],
      "related": [],
      "source": "https://openrouter.ai/openrouter/owl-alpha",
      "source_title": "Owl Alpha",
      "source_archived": null,
      "source_http_status": null,
      "followups": [],
      "revealed_as": "2026-06-30-longcat-2-0",
      "stealth_previews": [],
      "reveal_source": "https://x.com/Meituan_LongCat/status/2071783587205308721",
      "url": "https://frontierlog.ai/event/2026-04-28-owl-alpha",
      "image": "https://frontierlog.ai/og/2026-04-28-owl-alpha.png"
    }
  ],
  "next_cursor": null
}