{
  "id": "llama-2-70b",
  "name": "Llama-2-70b-hf",
  "identifiers": {
    "huggingface": [
      "meta-llama/Llama-2-70b-hf"
    ]
  },
  "developer": "Meta",
  "release_date": {
    "value": "2023-07-18",
    "source": "https://ai.meta.com/blog/llama-2/",
    "status": "recorded"
  },
  "weights_status": "open",
  "availability": {
    "value": "gated",
    "checked": "2026-09-24",
    "source": "https://huggingface.co/meta-llama/Llama-2-70b-hf",
    "note": "HF gate: manual."
  },
  "license": {
    "value": "Llama 2 Community License Agreement (research and commercial use; licensees with >700M monthly active users on the release date must request a separate license from Meta).",
    "source": "https://github.com/meta-llama/llama/blob/main/LICENSE",
    "status": "recorded"
  },
  "architecture": {
    "family": "unknown",
    "n_layers": {
      "value": null,
      "status": "not_recorded"
    },
    "hidden_size": {
      "value": null,
      "status": "not_recorded"
    },
    "n_heads": {
      "value": null,
      "status": "not_recorded"
    },
    "vocab_size": {
      "value": 32000,
      "source": "https://arxiv.org/abs/2307.09288",
      "status": "recorded",
      "note": "Paper: 'The total vocabulary size is 32k tokens.'"
    },
    "context_length": {
      "value": 4096,
      "source": "https://arxiv.org/abs/2307.09288",
      "status": "recorded",
      "note": "Table 1: '4k'."
    },
    "positional_encoding": {
      "value": null,
      "status": "not_recorded"
    },
    "note": "Meta's HF config is gated (not fetched this session). Paper does not publish per-size layer/hidden/head counts for Llama 2 (unlike Llama 1's paper); same situation as the already-recorded llama-2-7b."
  },
  "training_data": {
    "value": "2.0T tokens, 'a new mix of data from publicly available sources' (paper does not disclose sources). Same recipe as the 7B model.",
    "source": "https://arxiv.org/abs/2307.09288",
    "status": "recorded"
  },
  "techniques": [],
  "primary_sources": [
    "https://huggingface.co/meta-llama/Llama-2-70b-hf"
  ],
  "record_history": [
    {
      "date": "2026-09-24",
      "change": "ingested as candidate from HF (meta-llama/Llama-2-70b-hf@3aba440b59558f995867ba6e1f58f21d0336b5bb)",
      "by": "ingest_hf.py"
    },
    {
      "date": "2026-09-24",
      "change": "preparer: developer, license, release date, vocab/context from paper, successor_in_series to llama-7b added",
      "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"
    }
  ]
}