{
  "answer": {
    "definition": "The latest release is less than 12 months old.",
    "label": "active",
    "sentence": "flash-attn-4 last released 4.0.0b35 on 2026-10-14. Its latest version requires Python >=3.10."
  },
  "data": {
    "deprecated": false,
    "deprecation_message": "",
    "description": "Flash Attention CUTE (CUDA Template Engine) implementation",
    "downloads_monthly": 870839,
    "ecosystem": "pypi",
    "first_published_at": "2026-02-09",
    "homepage": "https://github.com/Dao-AILab/flash-attention",
    "latest_published_at": "2026-10-14",
    "latest_version": "4.0.0b35",
    "license": "BSD 3-Clause License",
    "maintenance": "active",
    "maintenance_definition": "The latest release is less than 12 months old.",
    "majors": [
      [
        "4",
        "4.0.0b3",
        "2026-03-05",
        "4.0.0b35",
        "2026-10-14"
      ],
      [
        "0",
        "0.0.1",
        "2026-02-09",
        "0.0.1",
        "2026-02-09"
      ]
    ],
    "median_days_between_majors": 24,
    "median_days_between_releases_24m": 7,
    "name": "flash-attn-4",
    "release_count_12m": 33,
    "repository_url": "https://github.com/Dao-AILab/flash-attention",
    "runtime_requirements": [
      {
        "constraint": ">=3.10",
        "minimum": "3.10",
        "runtime": "python",
        "runtime_name": "Python",
        "since_date": "2026-04-22",
        "since_version": "4.0.0b10"
      }
    ],
    "supported_runtimes": {
      "python": [
        {
          "cycle": "3.15",
          "eol_date": "2031-10-31",
          "eol_is_bool": null,
          "latest_release_date": "2026-10-21",
          "latest_version": "3.15.1",
          "lts": false,
          "release_date": "2026-10-09",
          "support_date": "2028-10-09",
          "synced_at": "2026-10-22"
        },
        {
          "cycle": "3.14",
          "eol_date": "2030-10-31",
          "eol_is_bool": null,
          "latest_release_date": "2026-10-21",
          "latest_version": "3.14.9",
          "lts": false,
          "release_date": "2025-10-07",
          "support_date": "2027-10-01",
          "synced_at": "2026-10-22"
        },
        {
          "cycle": "3.13",
          "eol_date": "2029-10-31",
          "eol_is_bool": null,
          "latest_release_date": "2026-10-21",
          "latest_version": "3.13.17",
          "lts": false,
          "release_date": "2024-10-07",
          "support_date": "2026-10-01",
          "synced_at": "2026-10-22"
        },
        {
          "cycle": "3.12",
          "eol_date": "2028-10-31",
          "eol_is_bool": null,
          "latest_release_date": "2026-10-01",
          "latest_version": "3.12.15",
          "lts": false,
          "release_date": "2023-10-02",
          "support_date": "2025-04-02",
          "synced_at": "2026-10-02"
        },
        {
          "cycle": "3.11",
          "eol_date": "2027-10-31",
          "eol_is_bool": null,
          "latest_release_date": "2026-10-01",
          "latest_version": "3.11.17",
          "lts": false,
          "release_date": "2022-10-24",
          "support_date": "2024-04-01",
          "synced_at": "2026-10-02"
        },
        {
          "cycle": "3.10",
          "eol_date": "2026-10-01",
          "eol_is_bool": null,
          "latest_release_date": "2026-10-01",
          "latest_version": "3.10.22",
          "lts": false,
          "release_date": "2021-10-04",
          "support_date": "2023-04-05",
          "synced_at": "2026-10-02"
        }
      ]
    },
    "synced_at": "2026-10-19",
    "version_count": 33
  },
  "description": "Keelbench rates how actively flash-attn-4 is maintained on PyPI and links its latest version to the runtimes it supports. flash-attn-4 last released 4.0.0b35 on 2026-10-14. Its latest version requires Python >=3.10.",
  "noindex": false,
  "path": "/pkg/pypi/flash-attn-4/",
  "schema": "keelbench.page.v1",
  "title": "flash-attn-4 maintenance and runtime support",
  "type": "pkg-package",
  "updated_at": "2026-10-14",
  "url": "https://keelbench.com/pkg/pypi/flash-attn-4/"
}