{
  "_comment": "Canonical wenFSD data model. The server loads this directly; the client (js/data.js) is checked against it by server/test/parity.test.js so the two can't silently drift.",
  "today": "2026-06-26",
  "earlyAccessShift": -0.3,
  "versionHistory": [
    { "version": "2025.26", "firstSeen": "2025-07-14" },
    { "version": "2025.32", "firstSeen": "2025-08-25" },
    { "version": "2025.38", "firstSeen": "2025-10-06" },
    { "version": "2025.44", "firstSeen": "2025-11-17" },
    { "version": "2026.2",  "firstSeen": "2026-01-19" },
    { "version": "2026.8",  "firstSeen": "2026-03-09" },
    { "version": "2026.14", "firstSeen": "2026-05-08" },
    { "version": "2026.20", "firstSeen": "2026-05-30" }
  ],
  "versions": [
    {
      "version": "2026.20.3",
      "firstSeen": "2026-06-09",
      "fleetPct": 37.0,
      "status": "rolling",
      "branch": "standard",
      "k": 0.34,
      "t0": "2026-06-22",
      "fsdBuild": {
        "AI4": "v14.3.4",
        "AI3": "v12.6.4"
      },
      "markets": ["United States", "Canada", "Europe", "Australia", "New Zealand"]
    },
    {
      "version": "2026.20.5.1",
      "firstSeen": "2026-06-29",
      "fleetPct": 0.1,
      "status": "early",
      "branch": "standard",
      "k": 0.12,
      "t0": "2026-07-18",
      "fsdBuild": {
        "AI4": "—",
        "AI3": "v14 Lite"
      },
      "markets": ["United States"]
    },
    {
      "version": "2026.20",
      "firstSeen": "2026-05-30",
      "fleetPct": 13.9,
      "status": "tapering",
      "branch": "standard",
      "k": 0.31,
      "t0": "2026-06-10",
      "fsdBuild": {
        "AI4": "v14.3.4",
        "AI3": "v12.6.4"
      },
      "markets": ["United States", "Canada", "Europe", "Australia", "New Zealand"]
    },
    {
      "version": "2026.17.5",
      "firstSeen": "2026-06-14",
      "fleetPct": 1.4,
      "status": "rolling",
      "branch": "standard",
      "k": 0.12,
      "t0": "2026-06-24",
      "fsdBuild": {
        "AI4": "v14.2.2.6",
        "AI3": "—"
      },
      "markets": ["Europe"]
    },
    {
      "version": "2026.16.6",
      "firstSeen": "2026-06-19",
      "fleetPct": 0.2,
      "status": "rolling",
      "branch": "standard",
      "k": 0.1,
      "t0": "2026-06-22",
      "fsdBuild": {
        "AI4": "v14.3.3",
        "AI3": "—"
      },
      "markets": ["Australia", "New Zealand"]
    },
    {
      "version": "2026.14.6.10",
      "firstSeen": "2026-06-13",
      "fleetPct": 6.0,
      "status": "mature",
      "branch": "standard",
      "k": 0.33,
      "t0": "2026-06-16",
      "fsdBuild": {
        "AI4": "v14.3.4",
        "AI3": "v12.6.4"
      },
      "markets": ["United States", "Canada"]
    },
    {
      "version": "2026.2.6.5",
      "firstSeen": "2026-04-18",
      "fleetPct": 7.5,
      "status": "legacy",
      "branch": "standard",
      "k": 0.3,
      "t0": "2026-04-28",
      "fsdBuild": {
        "AI4": "v13.2.9",
        "AI3": "v12.6.4"
      },
      "markets": ["United States", "Canada", "Europe", "Australia", "New Zealand"]
    }
  ],
  "regions": {
    "United States": {
      "osLagDays": 0,
      "drive": "LHD",
      "fsd": {
        "AI4": {
          "current": "v14.3.4",
          "next": "v14.4.x",
          "mode": "current",
          "k": 0.16,
          "cadenceDays": 28
        },
        "AI3": {
          "current": "v12.6.4",
          "next": "v14 Lite",
          "mode": "early",
          "k": 0.12,
          "t0": "2026-07-18",
          "t0Sigma": 12,
          "note": "HW3's first FSD beyond v12.6.4 is finally real. Tesla started rolling FSD v14 Lite (build 2026.20.5.1) to US early-access HW3 cars on 29 Jun 2026 — high Safety Score drivers + influencers first — and says it'll widen 'over the coming weeks' based on feedback. The window below is modelled off that: early-access cars already have it; most HW3 owners are looking at the following few weeks. Still Level-2 supervised."
        }
      }
    },
    "Canada": {
      "osLagDays": 3,
      "drive": "LHD",
      "fsd": {
        "AI4": {
          "current": "v13.2.9",
          "next": "v14.3.4",
          "mode": "rolling",
          "k": 0.18,
          "t0": "2026-06-26"
        },
        "AI3": {
          "current": "v12.6.4",
          "next": "v14 Lite",
          "mode": "promised",
          "note": "HW3 is capped at FSD v12.6.4. v14 Lite is no longer just a promise — Tesla started the US early-access rollout (build 2026.20.5.1) on 29 Jun 2026 and is widening it 'over the coming weeks.' Canada follows the US, but Tesla has given no committed Canadian date yet, so we won't fake one."
        }
      }
    },
    "Europe": {
      "osLagDays": 9,
      "drive": "LHD",
      "fsd": {
        "AI4": {
          "current": "v14.2.2.6",
          "next": "v14.3.x",
          "mode": "gated",
          "approval": {
            "earliestDays": 20,
            "modeDays": 70,
            "latestDays": 180
          },
          "k": 0.09
        },
        "AI3": {
          "current": "none",
          "next": "v14 Lite",
          "mode": "promised",
          "note": "FSD (Supervised) never shipped to HW3 in Europe. v14 Lite is now real — Tesla started the US early-access rollout (build 2026.20.5.1) on 29 Jun 2026 — but EU regulators impose the strictest automated-steering limits, so Europe follows the US with no committed date. It's coming; the when is genuinely unknown."
        }
      }
    },
    "Australia": {
      "osLagDays": 12,
      "drive": "RHD",
      "fsd": {
        "AI4": {
          "current": "v13.2.9",
          "next": "v14.3.3",
          "mode": "early",
          "firstSeen": "2026-06-19",
          "fleetPct": 1,
          "k": 0.11,
          "t0": "2026-06-22",
          "t0Sigma": 6,
          "newDeliveryFirst": true,
          "existingFleetDelayDays": 55,
          "existingFleetSigma": 21,
          "paused": true,
          "pausedSince": "2026-06-21",
          "pauseNote": "FSD (Supervised) v14.3.3 began reaching AU HW4 cars around 19 June 2026 via build 2026.16.6 — then, after only a small number of cars got it, Tesla paused the rollout. No committed resume date (new Model Y / Model Y L deliveries are still waiting too). We've frozen the estimate rather than show a date that no longer holds; it un-freezes automatically once enough owners report it rolling again."
        },
        "AI3": {
          "current": "none",
          "next": "v14 Lite",
          "mode": "promised",
          "note": "FSD (Supervised) has never shipped to HW3 in Australia — but v14 Lite is no longer vapourware. Tesla started rolling it to US early-access HW3 cars (build 2026.20.5.1) on 29 Jun 2026 and says international markets follow 'in the coming weeks.' For RHD Australia that still means extra validation + regulatory sign-off and NO committed date — but it's real now, and your turn is coming."
        }
      }
    },
    "New Zealand": {
      "osLagDays": 14,
      "drive": "RHD",
      "fsd": {
        "AI4": {
          "current": "v13.2.9",
          "next": "v14.3.3",
          "mode": "early",
          "firstSeen": "2026-06-19",
          "fleetPct": 0.5,
          "k": 0.1,
          "t0": "2026-06-24",
          "t0Sigma": 7,
          "newDeliveryFirst": true,
          "existingFleetDelayDays": 60,
          "existingFleetSigma": 24,
          "paused": true,
          "pausedSince": "2026-06-21",
          "pauseNote": "FSD (Supervised) v14.3.3 started rolling to NZ HW4 cars alongside Australia (around 19 June 2026), then Tesla paused the Oceania rollout after only a handful received it — no committed resume date. We've frozen the estimate rather than show a date that no longer holds; it un-freezes automatically once enough owners report it rolling again."
        },
        "AI3": {
          "current": "none",
          "next": "v14 Lite",
          "mode": "promised",
          "note": "FSD (Supervised) has never shipped to HW3 in New Zealand — but v14 Lite is real now: Tesla began the US early-access rollout (build 2026.20.5.1) on 29 Jun 2026, with international markets to follow 'in the coming weeks.' RHD NZ needs extra validation + regulatory sign-off, so there's no committed date — but it's no longer just a promise."
        }
      }
    }
  }
}