{
  "id": "bloom-560m",
  "name": "bloom-560m",
  "identifiers": {
    "huggingface": [
      "bigscience/bloom-560m"
    ]
  },
  "developer": "BigScience",
  "release_date": {
    "value": "2022-05-19",
    "source": "https://huggingface.co/api/models/bigscience/bloom-560m",
    "status": "partial",
    "note": "HF repo creation date; may predate or postdate public release."
  },
  "weights_status": "open",
  "availability": {
    "value": "available",
    "checked": "2026-09-24",
    "source": "https://huggingface.co/bigscience/bloom-560m"
  },
  "license": {
    "value": "bigscience-bloom-rail-1.0",
    "source": "https://huggingface.co/bigscience/bloom-560m/blob/ac2ae5fab2ce3f9f40dc79b5ca9f637430d24971/README.md",
    "status": "partial",
    "note": "From HF card metadata (uploader-declared); confirm against the license text."
  },
  "architecture": {
    "family": "decoder_only",
    "note": "family read from config 'architectures': ['BloomForCausalLM'].",
    "n_layers": {
      "value": 24,
      "source": "https://huggingface.co/bigscience/bloom-560m/raw/ac2ae5fab2ce3f9f40dc79b5ca9f637430d24971/config.json",
      "status": "recorded"
    },
    "hidden_size": {
      "value": null,
      "status": "not_recorded"
    },
    "n_heads": {
      "value": 16,
      "source": "https://huggingface.co/bigscience/bloom-560m/raw/ac2ae5fab2ce3f9f40dc79b5ca9f637430d24971/config.json",
      "status": "recorded"
    },
    "vocab_size": {
      "value": 250880,
      "source": "https://huggingface.co/bigscience/bloom-560m/raw/ac2ae5fab2ce3f9f40dc79b5ca9f637430d24971/config.json",
      "status": "recorded"
    },
    "context_length": {
      "value": null,
      "status": "not_recorded"
    },
    "positional_encoding": {
      "value": "ALiBi (attention bias by distance; no position embeddings)",
      "source": "https://arxiv.org/abs/2211.05100",
      "status": "recorded"
    }
  },
  "training_data": {
    "value": "ROOTS corpus: 46 natural and 13 programming languages, ~1.5TB / 350B unique tokens. Same recipe as the 7.1B model.",
    "source": "https://arxiv.org/abs/2211.05100",
    "status": "recorded"
  },
  "techniques": [],
  "primary_sources": [
    "https://huggingface.co/bigscience/bloom-560m",
    "https://huggingface.co/bigscience/bloom-560m/raw/ac2ae5fab2ce3f9f40dc79b5ca9f637430d24971/config.json"
  ],
  "record_history": [
    {
      "date": "2026-09-24",
      "change": "ingested as candidate from HF (bigscience/bloom-560m@ac2ae5fab2ce3f9f40dc79b5ca9f637430d24971)",
      "by": "ingest_hf.py"
    },
    {
      "date": "2026-09-24",
      "change": "preparer: developer, positional encoding, trained_on set (matches bloom-7b1)",
      "by": "claude (preparer, Sonnet 5)"
    },
    {
      "date": "2026-09-24",
      "change": "preparer cleanup: removed 2 stale flag(s), filled training_data",
      "by": "claude (preparer, Sonnet 5)"
    },
    {
      "date": "2026-09-24",
      "change": "reviewed and promoted from staging (1 edge(s) accepted)",
      "by": "Wilson Pruitt"
    }
  ]
}