{
  "schema": 2,
  "repo": "tphakala/BirdNET-v2.4",
  "family": "birdnet",
  "updated": "2026-07-24",
  "family_meta": {
    "display_name": "BirdNET v2.4 (DFT-truncated)",
    "description": "Drop-in BirdNET v2.4 classifier with DFT-bin truncation: bit-exact output, about 1.4-2x faster CPU and OpenVINO inference.",
    "author": "Cornell Lab of Ornithology & Chemnitz University of Technology",
    "license": "CC-BY-NC-SA-4.0",
    "commercial_use": false,
    "upstream_url": "https://github.com/birdnet-team/BirdNET-Analyzer",
    "species_count": 6522
  },
  "requirements_note": "requirements.min_ram_mb is a conservative, high-biased RAM floor: measured peak RSS + 15% where a benchmark exists, else a size-derived estimate biased high (a too-low floor risks OOM; a too-high floor only over-excludes on the smallest devices). Measured values will replace the estimates over time.",
  "naming": "legacy names, frozen; new files follow <family>-<upstream>[-<region>]-<variant>-b<build>.<ext>",
  "selection": {
    "x86-64/onnxruntime": "BirdNET_v2.4_fp32_dfttrunc.onnx",
    "x86-64/openvino-cpu": "BirdNET_v2.4_fp32_dfttrunc.onnx",
    "aarch64-a76/openvino": "BirdNET_v2.4_fp32_dfttrunc.onnx",
    "aarch64/onnxruntime": "BirdNET_v2.4_int8_arm_dfttrunc.onnx",
    "cuda": "BirdNET_v2.4_fp32_dfttrunc.onnx"
  },
  "notes": "The _dfttrunc builds truncate the in-graph mel DFT to the bins the filterbank actually uses: bit-exact and ~1.4-2x faster on CPU/OpenVINO. Prefer them; the non-dfttrunc files are kept for existing installs.",
  "models": [
    {
      "path": "BirdNET_v2.4_fp32.onnx",
      "family": "birdnet",
      "upstream_version": "2.4",
      "upstream_source": "https://zenodo.org/records/15050749",
      "build": 1,
      "legacy": true,
      "variant": "fp32",
      "precision": "fp32",
      "region": null,
      "classes": 6522,
      "labels": "labels.txt",
      "input": {
        "sample_rate": 48000,
        "window_seconds": 3,
        "samples": 144000,
        "shape": [
          "batch",
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        ],
        "dtype": "float32"
      },
      "backends": {
        "onnxruntime-cpu": {
          "supported": true,
          "recommended": true
        },
        "openvino-cpu": {
          "supported": true,
          "recommended": true
        },
        "openvino-gpu": {
          "supported": true,
          "recommended": false
        },
        "cuda": {
          "supported": true,
          "recommended": true
        },
        "tensorrt": {
          "supported": true,
          "recommended": false
        }
      },
      "backend_support_verified": true,
      "sha256": "f49b686838f62fc8c5bcb4364cd514c64882f6fd666c204aa5d4eb80a7795264",
      "size_bytes": 62269581,
      "superseded_by": null,
      "requirements": {
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    {
      "path": "BirdNET_v2.4_fp32_dfttrunc.onnx",
      "family": "birdnet",
      "upstream_version": "2.4",
      "upstream_source": "https://zenodo.org/records/15050749",
      "build": 1,
      "legacy": true,
      "variant": "fp32",
      "precision": "fp32",
      "region": null,
      "classes": 6522,
      "labels": "labels.txt",
      "input": {
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        "window_seconds": 3,
        "samples": 144000,
        "shape": [
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        ],
        "dtype": "float32"
      },
      "backends": {
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          "supported": true,
          "recommended": true
        },
        "openvino-cpu": {
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          "recommended": true
        },
        "openvino-gpu": {
          "supported": true,
          "recommended": false
        },
        "cuda": {
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          "recommended": true
        },
        "tensorrt": {
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          "recommended": false
        }
      },
      "backend_support_verified": true,
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      "optimizations": [
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      "requirements": {
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      }
    },
    {
      "path": "BirdNET_v2.4_int8_arm.onnx",
      "family": "birdnet",
      "upstream_version": "2.4",
      "upstream_source": "https://zenodo.org/records/15050749",
      "build": 1,
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      "variant": "int8-arm",
      "precision": "int8-arm",
      "region": null,
      "classes": 6522,
      "labels": "labels.txt",
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        ],
        "dtype": "float32"
      },
      "backends": {
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          "recommended": true
        },
        "openvino-cpu": {
          "supported": true,
          "recommended": false
        },
        "openvino-gpu": {
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          "recommended": false
        },
        "cuda": {
          "supported": false,
          "recommended": false
        },
        "tensorrt": {
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          "recommended": false
        }
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      "backend_support_verified": true,
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    {
      "path": "BirdNET_v2.4_int8_arm_dfttrunc.onnx",
      "family": "birdnet",
      "upstream_version": "2.4",
      "upstream_source": "https://zenodo.org/records/15050749",
      "build": 1,
      "legacy": true,
      "variant": "int8-arm",
      "precision": "int8-arm",
      "region": null,
      "classes": 6522,
      "labels": "labels.txt",
      "input": {
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        "samples": 144000,
        "shape": [
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        ],
        "dtype": "float32"
      },
      "backends": {
        "onnxruntime-cpu": {
          "supported": true,
          "recommended": true
        },
        "openvino-cpu": {
          "supported": true,
          "recommended": false
        },
        "openvino-gpu": {
          "supported": false,
          "recommended": false
        },
        "cuda": {
          "supported": false,
          "recommended": false
        },
        "tensorrt": {
          "supported": false,
          "recommended": false
        }
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      "backend_support_verified": true,
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      "size_bytes": 38727042,
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      "optimizations": [
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      "requirements": {
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    }
  ]
}